feat: add unit, integration, and functional test coverage for all 9 MOADs
Each MOAD now has a synthetic defective specimen and fixed specimen proven from first principles across three test tiers: Unit (tests/unit/Moad000X*.java): - Correctness: defective and fixed produce identical functional output - Defect behavior: defective specimen exhibits the defect (measurable) - Fix behavior: fixed specimen eliminates the defect Integration (tests/integration/AllMoadsIntegrationTest.java): - All 9 MOADs proven at medium scale (N=500-2000) - MOAD-0001: O(N^2) vs O(N) list scan at N=1000 - MOAD-0002: 500 sessions trample each other (defective) vs coexist (fixed) - MOAD-0003: 250 anonymous requests leak auth identity (defective) vs zero (fixed) - MOAD-0004: 3000 credential exposures across 1000 requests (defective) vs zero (fixed) - MOAD-0005: 500 computes for 500 concurrent misses vs exactly 1 - MOAD-0006: all 500 passwords extractable from DB (defective) vs unextractable (fixed) - MOAD-0007: N=2000 spatial objects, defective visits all 2000 vs O(log N + k) - MOAD-0009: 990 wasted firings for 1000 ticks / 10 events vs zero waste - MOAD-0011: 10240 NFA steps vs 13 steps on N=12 adversarial input (788x) Functional (tests/functional/AllMoadsFunctionalTest.java): - MOAD-0005: real-thread contention proves herd (defective >1 compute, fixed exactly 1) - MOAD-0007: N=50000 spatial objects, 50M defective probes vs 516K fixed (97x speedup) - MOAD-0009: 10000 ticks / 10 events, 9990 wasted firings vs zero (1000x ratio) - MOAD-0011: N=16 adversarial, 163840 defective steps vs 17 fixed (9638x ratio) Support algorithms (tests/support/Moad000X*.java): - Moad0002Algorithm: shared mutable global state (DefectiveAudioSystem / FixedAudioSystem + Context) - Moad0003Algorithm: ThreadLocal not cleared (handleDefective / handleFixed with finally) - Moad0004Algorithm: HTTP headers logged verbatim (logDefective / logFixed with CREDENTIAL_HEADERS denylist) - Moad0005Algorithm: get+null+compute+put (DefectiveCache HashMap / FixedCache ConcurrentHashMap.computeIfAbsent) - Moad0006Algorithm: Base64 password storage (DefectiveCredentialStore / FixedCredentialStore SHA-256+salt) - Moad0007Algorithm: linear spatial scan (queryDefective list / queryFixed sorted array + binary search) - Moad0009Algorithm: timer-driven polling (runDefectiveScheduler / runFixedEventDriven) - Moad0011Algorithm: PCRE nested quantifiers (matchDefective backtracking NFA / matchFixed linear NFA) Makefile: added unit-moad-0002 through unit-moad-0011 targets, integration-all-moads, functional-all-moads. integration and functional targets now depend on all-MOADs variants.
This commit is contained in:
parent
1f88aa0374
commit
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19 changed files with 3359 additions and 5 deletions
120
tests/Makefile
120
tests/Makefile
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@ -92,6 +92,9 @@ SUPPORT_ALL := support/TarjanAlgorithm.java \
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unit-nomad unit-consul \
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unit-ray unit-celery unit-prefect \
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unit-libjpeg-turbo-0001 \
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unit-moad-0002 unit-moad-0003 unit-moad-0004 unit-moad-0005 \
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unit-moad-0006 unit-moad-0007 unit-moad-0009 unit-moad-0011 \
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integration-all-moads functional-all-moads \
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bench-mc-server bench-max bench-gumyum bench-everything bench-loadsim bench-elytra \
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bench-unpatched bench-mitigated bench-enriched bench-three-tier \
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play-unpatched play-mitigated play-enriched \
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@ -142,7 +145,9 @@ unit: unit-tarjan unit-findnode unit-closure unit-toposort unit-deplist unit-bou
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unit-nim-0001 unit-nim-0002 \
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unit-nomad unit-consul \
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unit-ray unit-celery unit-prefect \
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unit-libjpeg-turbo-0001
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unit-libjpeg-turbo-0001 \
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unit-moad-0002 unit-moad-0003 unit-moad-0004 unit-moad-0005 \
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unit-moad-0006 unit-moad-0007 unit-moad-0009 unit-moad-0011
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unit-tarjan: unit/TarjanComplexityTest.class
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@echo ""
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@ -933,9 +938,9 @@ unit-prefect: unit/PrefectTest.class
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# Runs against the installed JDK's compiled GraphUtils.
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# Proves real timing growth and confirms algorithm correctness.
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integration: integration/InferenceGraphScalingTest.class
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integration: integration/InferenceGraphScalingTest.class integration-all-moads
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@echo ""
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@echo "=== INTEGRATION ==="
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@echo "=== INTEGRATION: CWE-407 InferenceGraph scaling ==="
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$(JAVA) $(EXPORTS) -cp . integration.InferenceGraphScalingTest
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integration/InferenceGraphScalingTest.class: support/AbstractTestNode.java integration/InferenceGraphScalingTest.java
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@ -945,9 +950,9 @@ integration/InferenceGraphScalingTest.class: support/AbstractTestNode.java integ
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# Generates Java source and compiles it with the system javac.
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# Measures compilation latency across increasing generic chain depths.
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functional: functional/CompilerBenchmarkTest.class
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functional: functional/CompilerBenchmarkTest.class functional-all-moads
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@echo ""
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@echo "=== FUNCTIONAL ==="
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@echo "=== FUNCTIONAL: javac compiler benchmark ==="
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$(JAVA) -cp . functional.CompilerBenchmarkTest
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functional/CompilerBenchmarkTest.class: functional/CompilerBenchmarkTest.java
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@ -1177,6 +1182,111 @@ unit-libjpeg-turbo-0001: unit/LibjpegTurbo0001Test.class
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unit/LibjpegTurbo0001Test.class: ../defects/libjpeg-turbo-0001/unit/LibjpegTurbo0001Test.java
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$(JAVAC) -cp . -d . ../defects/libjpeg-turbo-0001/unit/LibjpegTurbo0001Test.java
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# ── MOAD specimen unit tests (0002–0011) ─────────────────────────────────────
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# One unit suite per MOAD. Each proves defect manifests in defective specimen
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# and fix eliminates it in fixed specimen, from first principles.
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MOAD_SUPPORT := support/Moad0002Algorithm.java \
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support/Moad0003Algorithm.java \
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support/Moad0004Algorithm.java \
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support/Moad0005Algorithm.java \
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support/Moad0006Algorithm.java \
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support/Moad0007Algorithm.java \
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support/Moad0009Algorithm.java \
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support/Moad0011Algorithm.java
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unit-moad-0002: unit/Moad0002UnitTest.class
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@echo ""
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@echo "=== MOAD-0002: An Intertangled Defect ==="
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$(JAVA) -cp . unit.Moad0002UnitTest
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unit/Moad0002UnitTest.class: support/Moad0002Algorithm.java unit/Moad0002UnitTest.java
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$(JAVAC) -cp . support/Moad0002Algorithm.java unit/Moad0002UnitTest.java
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unit-moad-0003: unit/Moad0003UnitTest.class
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@echo ""
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@echo "=== MOAD-0003: A Leaked Context ==="
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$(JAVA) -cp . unit.Moad0003UnitTest
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unit/Moad0003UnitTest.class: support/Moad0003Algorithm.java unit/Moad0003UnitTest.java
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$(JAVAC) -cp . support/Moad0003Algorithm.java unit/Moad0003UnitTest.java
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unit-moad-0004: unit/Moad0004UnitTest.class
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@echo ""
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@echo "=== MOAD-0004: A Logged Secret ==="
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$(JAVA) -cp . unit.Moad0004UnitTest
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unit/Moad0004UnitTest.class: support/Moad0004Algorithm.java unit/Moad0004UnitTest.java
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$(JAVAC) -cp . support/Moad0004Algorithm.java unit/Moad0004UnitTest.java
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unit-moad-0005: unit/Moad0005UnitTest.class
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@echo ""
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@echo "=== MOAD-0005: A Thundering Herd ==="
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$(JAVA) -cp . unit.Moad0005UnitTest
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unit/Moad0005UnitTest.class: support/Moad0005Algorithm.java unit/Moad0005UnitTest.java
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$(JAVAC) -cp . support/Moad0005Algorithm.java unit/Moad0005UnitTest.java
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unit-moad-0006: unit/Moad0006UnitTest.class
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@echo ""
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@echo "=== MOAD-0006: A Glass Safe ==="
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$(JAVA) -cp . unit.Moad0006UnitTest
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unit/Moad0006UnitTest.class: support/Moad0006Algorithm.java unit/Moad0006UnitTest.java
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$(JAVAC) -cp . support/Moad0006Algorithm.java unit/Moad0006UnitTest.java
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unit-moad-0007: unit/Moad0007UnitTest.class
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@echo ""
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@echo "=== MOAD-0007: A Flatland Defect ==="
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$(JAVA) -cp . unit.Moad0007UnitTest
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unit/Moad0007UnitTest.class: support/Moad0007Algorithm.java unit/Moad0007UnitTest.java
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$(JAVAC) -cp . support/Moad0007Algorithm.java unit/Moad0007UnitTest.java
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unit-moad-0009: unit/Moad0009UnitTest.class
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@echo ""
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@echo "=== MOAD-0009: A Metered Heart ==="
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$(JAVA) -cp . unit.Moad0009UnitTest
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unit/Moad0009UnitTest.class: support/Moad0009Algorithm.java unit/Moad0009UnitTest.java
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$(JAVAC) -cp . support/Moad0009Algorithm.java unit/Moad0009UnitTest.java
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unit-moad-0011: unit/Moad0011UnitTest.class
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@echo ""
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@echo "=== MOAD-0011: A Catastrophic Inheritance ==="
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$(JAVA) -cp . unit.Moad0011UnitTest
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unit/Moad0011UnitTest.class: support/Moad0011Algorithm.java unit/Moad0011UnitTest.java
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$(JAVAC) -cp . support/Moad0011Algorithm.java unit/Moad0011UnitTest.java
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# ── MOAD all-MOADs integration test ──────────────────────────────────────────
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# Proves every MOAD's defect manifests and fix eliminates at medium scale (N=500-2000).
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integration-all-moads: integration/AllMoadsIntegrationTest.class
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@echo ""
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@echo "=== INTEGRATION: All MOADs (9 defect families) ==="
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$(JAVA) -cp . integration.AllMoadsIntegrationTest
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integration/AllMoadsIntegrationTest.class: $(MOAD_SUPPORT) integration/AllMoadsIntegrationTest.java
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$(JAVAC) -cp . $(MOAD_SUPPORT) integration/AllMoadsIntegrationTest.java
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# ── MOAD all-MOADs functional test ───────────────────────────────────────────
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# Wall-clock timing proofs for performance-sensitive MOADs (0005, 0007, 0009, 0011).
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functional-all-moads: functional/AllMoadsFunctionalTest.class
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@echo ""
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@echo "=== FUNCTIONAL: All MOADs timing proofs ==="
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$(JAVA) -cp . functional.AllMoadsFunctionalTest
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functional/AllMoadsFunctionalTest.class: support/Moad0005Algorithm.java \
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support/Moad0007Algorithm.java \
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support/Moad0009Algorithm.java \
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support/Moad0011Algorithm.java \
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functional/AllMoadsFunctionalTest.java
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$(JAVAC) -cp . support/Moad0005Algorithm.java support/Moad0007Algorithm.java \
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support/Moad0009Algorithm.java support/Moad0011Algorithm.java \
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functional/AllMoadsFunctionalTest.java
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# ── Clean ─────────────────────────────────────────────────────────────────────
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clean:
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293
tests/functional/AllMoadsFunctionalTest.java
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293
tests/functional/AllMoadsFunctionalTest.java
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@ -0,0 +1,293 @@
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package functional;
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import support.Moad0005Algorithm;
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import support.Moad0007Algorithm;
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import support.Moad0007Algorithm.SpatialObject;
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import support.Moad0009Algorithm;
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import support.Moad0009Algorithm.Event;
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import support.Moad0011Algorithm;
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import java.util.List;
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import java.util.concurrent.CountDownLatch;
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import java.util.concurrent.ExecutorService;
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import java.util.concurrent.Executors;
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import java.util.concurrent.TimeUnit;
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import java.util.concurrent.atomic.AtomicInteger;
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/**
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* Functional (wall-clock timing) tests for MOADs with measurable performance impact.
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*
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* Each test proves that the defective implementation is measurably slower than
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* the fixed implementation at realistic scale, establishing timing thresholds
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* that a regression test suite must enforce.
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*
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* MOADs proven by wall-clock timing:
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* - MOAD-0001: O(N^2) list scan vs O(N) hash set (covered by CompilerBenchmarkTest)
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* - MOAD-0005: N concurrent computes vs 1 compute (real thread contention)
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* - MOAD-0007: O(N) spatial scan vs O(log N) binary search at N=50000
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* - MOAD-0009: N=10000 wasted timer fires vs M=10 event-driven fires
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* - MOAD-0011: O(2^N) regex backtracking vs O(N) linear NFA at N=20
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*
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* MOADs 0002, 0003, 0004, 0006 are correctness/security defects without
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* wall-clock timing impact — their functional proof is the unit test assertions.
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*
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* Timing thresholds:
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* - MOAD-0005: defective >4x slower than fixed under concurrent load
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* - MOAD-0007: defective >20x more probes than fixed at N=50000
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* - MOAD-0009: defective fires 1000x more than fixed (ratio proof, not timing)
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* - MOAD-0011: fixed completes N=20 adversarial in <10ms; defective may be slow
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*
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* No build tool required. Compile and run:
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*
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* cd tests
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* java -m jdk.compiler/com.sun.tools.javac.Main -cp . \
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* support/Moad0005Algorithm.java support/Moad0007Algorithm.java \
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* support/Moad0009Algorithm.java support/Moad0011Algorithm.java \
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* functional/AllMoadsFunctionalTest.java
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* java -cp . functional.AllMoadsFunctionalTest
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*/
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public class AllMoadsFunctionalTest {
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private static int passed = 0;
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private static int failed = 0;
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public static void main(String[] args) throws InterruptedException {
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System.out.println("=== AllMoadsFunctionalTest — wall-clock timing proofs ===\n");
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benchMoad0005_ThunderingHerd_RealThreads();
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benchMoad0007_FlatlandDefect_LargeScene();
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benchMoad0009_MeteredHeart_WastedFirings();
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benchMoad0011_CatastrophicInheritance_StepTiming();
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System.out.printf("\n=== %d passed, %d failed ===%n", passed, failed);
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if (failed > 0) System.exit(1);
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}
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// ── MOAD-0005: Thundering Herd — real thread concurrency ─────────────────
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static void benchMoad0005_ThunderingHerd_RealThreads() throws InterruptedException {
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System.out.println("── MOAD-0005: A Thundering Herd (real thread contention) ──");
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int threads = 64;
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int computeSleepUs = 0; // pure CPU — no sleep needed, atomic counter proves the point
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// Defective: N threads, cold cache, all see null simultaneously
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Moad0005Algorithm.resetCounter();
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{
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Moad0005Algorithm.DefectiveCache cache = new Moad0005Algorithm.DefectiveCache();
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CountDownLatch ready = new CountDownLatch(threads);
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CountDownLatch start = new CountDownLatch(1);
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CountDownLatch finish = new CountDownLatch(threads);
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ExecutorService pool = Executors.newFixedThreadPool(threads);
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for (int i = 0; i < threads; i++) {
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pool.submit(() -> {
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ready.countDown();
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try { start.await(); } catch (InterruptedException e) { Thread.currentThread().interrupt(); }
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cache.getOrCompute("shared-key");
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finish.countDown();
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});
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}
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ready.await();
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Moad0005Algorithm.resetCounter(); // reset just before all threads fire
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start.countDown(); // release all threads simultaneously
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finish.await(10, TimeUnit.SECONDS);
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pool.shutdown();
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}
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int defComputes = Moad0005Algorithm.COMPUTE_CALLS.get();
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// Fixed: N threads, cold ConcurrentHashMap.computeIfAbsent()
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Moad0005Algorithm.resetCounter();
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{
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Moad0005Algorithm.FixedCache cache = new Moad0005Algorithm.FixedCache();
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CountDownLatch ready = new CountDownLatch(threads);
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CountDownLatch start = new CountDownLatch(1);
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CountDownLatch finish = new CountDownLatch(threads);
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ExecutorService pool = Executors.newFixedThreadPool(threads);
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for (int i = 0; i < threads; i++) {
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pool.submit(() -> {
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ready.countDown();
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try { start.await(); } catch (InterruptedException e) { Thread.currentThread().interrupt(); }
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cache.getOrCompute("shared-key");
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finish.countDown();
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});
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}
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ready.await();
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Moad0005Algorithm.resetCounter();
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start.countDown();
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finish.await(10, TimeUnit.SECONDS);
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pool.shutdown();
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}
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int fixComputes = Moad0005Algorithm.COMPUTE_CALLS.get();
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System.out.printf(" defective computes: %d fixed computes: %d%n", defComputes, fixComputes);
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// Defective: multiple computes (herd); fixed: exactly 1
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// Note: with real threads, defective may not reach full N due to timing,
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// but always >> 1; fixed is always exactly 1.
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assertTrue("MOAD-0005 real threads: defective computes > 1 (herd manifests)",
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defComputes > 1,
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"defComputes=" + defComputes + " (expected >1)");
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assertTrue("MOAD-0005 real threads: fixed computes == 1 (herd suppressed)",
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fixComputes == 1,
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"fixComputes=" + fixComputes + " (expected 1)");
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System.out.println();
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}
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// ── MOAD-0007: Flatland Defect — large scene timing ───────────────────────
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static void benchMoad0007_FlatlandDefect_LargeScene() {
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System.out.println("── MOAD-0007: A Flatland Defect (N=50000 spatial objects) ──");
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int N = 50_000;
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List<SpatialObject> scene = Moad0007Algorithm.buildScene(N, 100_000.0);
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SpatialObject[] index = Moad0007Algorithm.buildIndex(scene);
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// 1000 narrow-range queries (each matches ~1% of scene)
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int queries = 1000;
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double rangeWidth = 1000.0; // 1% of [0, 100000]
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long defProbes = 0, fixProbes = 0;
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long defStart = System.nanoTime();
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for (int q = 0; q < queries; q++) {
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double lo = q * 99.0;
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Moad0007Algorithm.Result r = Moad0007Algorithm.queryDefective(scene, lo, lo + rangeWidth);
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defProbes += r.probeCount;
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}
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long defMs = (System.nanoTime() - defStart) / 1_000_000;
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long fixStart = System.nanoTime();
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for (int q = 0; q < queries; q++) {
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double lo = q * 99.0;
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Moad0007Algorithm.Result r = Moad0007Algorithm.queryFixed(index, lo, lo + rangeWidth);
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fixProbes += r.probeCount;
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}
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long fixMs = (System.nanoTime() - fixStart) / 1_000_000;
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System.out.printf(" defective: %d total probes, %d ms%n", defProbes, defMs);
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System.out.printf(" fixed: %d total probes, %d ms%n", fixProbes, fixMs);
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// Defective: queries * N = 1000 * 50000 = 50M probes
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long expectedDefProbes = (long) queries * N;
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assertTrue("MOAD-0007 defective: total probes == queries * N",
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defProbes == expectedDefProbes,
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"expected=" + expectedDefProbes + " got=" + defProbes);
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// Fixed: probes << defective (binary search)
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double probeRatio = (double) defProbes / fixProbes;
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// With 1% range queries returning ~500 hits each, fixed visits log N + k probes
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// per query. At N=50000 ratio is typically ~97x. Gate at 50x.
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assertTrue("MOAD-0007: defective visits 50x+ more objects than fixed at N=50000",
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probeRatio > 50.0,
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"probeRatio=" + probeRatio);
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// Fixed completes faster (timing check, allow generous bound)
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// This may vary by hardware; use probe count ratio as primary signal.
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System.out.printf(" probe ratio: %.0fx speedup for fixed%n", probeRatio);
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System.out.println();
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}
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// ── MOAD-0009: Metered Heart — wasted firing ratio ────────────────────────
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static void benchMoad0009_MeteredHeart_WastedFirings() {
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System.out.println("── MOAD-0009: A Metered Heart (N=10000 ticks, M=10 events) ──");
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int ticks = 10_000;
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int eventM = 10;
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List<Event> events = Moad0009Algorithm.buildEvents(eventM, ticks);
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||||
long defStart = System.nanoTime();
|
||||
Moad0009Algorithm.Result def = Moad0009Algorithm.runDefectiveScheduler(ticks, events);
|
||||
long defNs = System.nanoTime() - defStart;
|
||||
|
||||
long fixStart = System.nanoTime();
|
||||
Moad0009Algorithm.Result fix = Moad0009Algorithm.runFixedEventDriven(events);
|
||||
long fixNs = System.nanoTime() - fixStart;
|
||||
|
||||
System.out.printf(" defective: %d firings, %d useful, %d wasted (%d ns)%n",
|
||||
def.firings, def.eventsProcessed, def.firings - def.eventsProcessed, defNs);
|
||||
System.out.printf(" fixed: %d firings, %d useful, %d wasted (%d ns)%n",
|
||||
fix.firings, fix.eventsProcessed, fix.firings - fix.eventsProcessed, fixNs);
|
||||
|
||||
// Correctness: same events processed
|
||||
assertTrue("MOAD-0009: both process all events",
|
||||
def.eventsProcessed == fix.eventsProcessed && def.eventsProcessed == eventM,
|
||||
"def=" + def.eventsProcessed + " fix=" + fix.eventsProcessed);
|
||||
|
||||
// Wasted firings: defective 9990 vs fixed 0
|
||||
int wasted = def.firings - def.eventsProcessed;
|
||||
assertTrue("MOAD-0009 defective: 9990 wasted firings (99.9% waste)",
|
||||
wasted == ticks - eventM,
|
||||
"wasted=" + wasted);
|
||||
assertTrue("MOAD-0009 fixed: zero wasted firings",
|
||||
fix.firings == eventM,
|
||||
"fix.firings=" + fix.firings);
|
||||
|
||||
// Firing ratio: 1000x more firings in defective
|
||||
double firingRatio = (double) def.firings / fix.firings;
|
||||
assertTrue("MOAD-0009: defective fires 1000x more than fixed",
|
||||
firingRatio >= 1000.0,
|
||||
"ratio=" + firingRatio);
|
||||
|
||||
System.out.println();
|
||||
}
|
||||
|
||||
// ── MOAD-0011: Catastrophic Inheritance — NFA step timing ─────────────────
|
||||
|
||||
static void benchMoad0011_CatastrophicInheritance_StepTiming() {
|
||||
System.out.println("── MOAD-0011: A Catastrophic Inheritance (N=20 adversarial) ──");
|
||||
|
||||
// N=20 is safe to run — defective may take ~2^20 = ~1M steps but not seconds.
|
||||
// N=25+ would hang in a real regex engine; our step-counting NFA is bounded.
|
||||
String adversarial = Moad0011Algorithm.adversarialInput(16);
|
||||
|
||||
long defStart = System.nanoTime();
|
||||
Moad0011Algorithm.Result def = Moad0011Algorithm.matchDefective(adversarial);
|
||||
long defNs = System.nanoTime() - defStart;
|
||||
|
||||
long fixStart = System.nanoTime();
|
||||
Moad0011Algorithm.Result fix = Moad0011Algorithm.matchFixed(adversarial);
|
||||
long fixNs = System.nanoTime() - fixStart;
|
||||
|
||||
System.out.printf(" defective: %d steps, %d ns%n", def.steps, defNs);
|
||||
System.out.printf(" fixed: %d steps, %d ns%n", fix.steps, fixNs);
|
||||
|
||||
// Correctness
|
||||
assertTrue("MOAD-0011: both reject adversarial input", !def.matched && !fix.matched,
|
||||
"def.matched=" + def.matched + " fix.matched=" + fix.matched);
|
||||
|
||||
// Step ratio proves catastrophic backtracking
|
||||
double ratio = (double) def.steps / fix.steps;
|
||||
System.out.printf(" step ratio: %.0fx (defective vs fixed)%n", ratio);
|
||||
|
||||
assertTrue("MOAD-0011: defective steps >> fixed steps (>1000x at N=16)",
|
||||
ratio > 1000.0,
|
||||
"ratio=" + ratio + " defSteps=" + def.steps + " fixSteps=" + fix.steps);
|
||||
|
||||
// Fixed must complete in bounded steps (O(N) = 17 steps for N=16)
|
||||
assertTrue("MOAD-0011 fixed: completes in O(N) steps at N=16",
|
||||
fix.steps <= 20,
|
||||
"fixSteps=" + fix.steps);
|
||||
|
||||
// Complexity gate: fixed completes in < 1ms on any modern hardware
|
||||
assertTrue("MOAD-0011 fixed: completes in < 1ms",
|
||||
fixNs < 1_000_000,
|
||||
"fixNs=" + fixNs);
|
||||
|
||||
System.out.println();
|
||||
}
|
||||
|
||||
// ── Helpers ───────────────────────────────────────────────────────────────
|
||||
|
||||
static void assertTrue(String label, boolean condition, String detail) {
|
||||
if (condition) {
|
||||
System.out.printf(" PASS: %s%n", label);
|
||||
passed++;
|
||||
} else {
|
||||
System.out.printf(" FAIL: %s — %s%n", label, detail);
|
||||
failed++;
|
||||
}
|
||||
}
|
||||
}
|
||||
474
tests/integration/AllMoadsIntegrationTest.java
Normal file
474
tests/integration/AllMoadsIntegrationTest.java
Normal file
|
|
@ -0,0 +1,474 @@
|
|||
package integration;
|
||||
|
||||
import support.Moad0002Algorithm;
|
||||
import support.Moad0002Algorithm.*;
|
||||
import support.Moad0003Algorithm;
|
||||
import support.Moad0004Algorithm;
|
||||
import support.Moad0004Algorithm.Result;
|
||||
import support.Moad0005Algorithm;
|
||||
import support.Moad0006Algorithm;
|
||||
import support.Moad0006Algorithm.*;
|
||||
import support.Moad0007Algorithm;
|
||||
import support.Moad0007Algorithm.SpatialObject;
|
||||
import support.Moad0009Algorithm;
|
||||
import support.Moad0009Algorithm.Event;
|
||||
import support.Moad0011Algorithm;
|
||||
|
||||
import java.util.ArrayList;
|
||||
import java.util.HashMap;
|
||||
import java.util.List;
|
||||
import java.util.Map;
|
||||
|
||||
/**
|
||||
* Integration tests for all 9 active MOADs.
|
||||
*
|
||||
* Validates at medium scale (N=500 to N=2000) that:
|
||||
* - Each MOAD's defective specimen exhibits the defect at realistic input sizes.
|
||||
* - Each MOAD's fixed specimen eliminates the defect at the same input sizes.
|
||||
* - Defect/fix pairs produce identical functional results (same output).
|
||||
* - Complexity ratios at medium scale match first-principles predictions.
|
||||
*
|
||||
* All 9 MOADs run as a single suite. A failure in any section reports the
|
||||
* MOAD name so the specific defect is immediately identifiable.
|
||||
*
|
||||
* No build tool required. Compile and run:
|
||||
*
|
||||
* cd tests
|
||||
* java -m jdk.compiler/com.sun.tools.javac.Main -cp . \
|
||||
* support/Moad0002Algorithm.java support/Moad0003Algorithm.java \
|
||||
* support/Moad0004Algorithm.java support/Moad0005Algorithm.java \
|
||||
* support/Moad0006Algorithm.java support/Moad0007Algorithm.java \
|
||||
* support/Moad0009Algorithm.java support/Moad0011Algorithm.java \
|
||||
* integration/AllMoadsIntegrationTest.java
|
||||
* java -cp . integration.AllMoadsIntegrationTest
|
||||
*/
|
||||
public class AllMoadsIntegrationTest {
|
||||
|
||||
private static int passed = 0;
|
||||
private static int failed = 0;
|
||||
|
||||
public static void main(String[] args) {
|
||||
System.out.println("=== AllMoadsIntegrationTest — 9 MOADs at medium scale ===\n");
|
||||
|
||||
testMoad0001_SedimentaryDefect();
|
||||
testMoad0002_IntertangledDefect();
|
||||
testMoad0003_LeakedContext();
|
||||
testMoad0004_LoggedSecret();
|
||||
testMoad0005_ThunderingHerd();
|
||||
testMoad0006_GlassSafe();
|
||||
testMoad0007_FlatlandDefect();
|
||||
testMoad0009_MeteredHeart();
|
||||
testMoad0011_CatastrophicInheritance();
|
||||
|
||||
System.out.printf("\n=== %d passed, %d failed ===%n", passed, failed);
|
||||
if (failed > 0) System.exit(1);
|
||||
}
|
||||
|
||||
// ── MOAD-0001: A Sedimentary Defect (CWE-407) ────────────────────────────
|
||||
// Linear scan inside a loop: O(N^2) vs HashSet O(N).
|
||||
// Proven in detail by TarjanComplexityTest and friends.
|
||||
// Integration check: verify the structural claim holds at N=1000.
|
||||
|
||||
static void testMoad0001_SedimentaryDefect() {
|
||||
System.out.println("── MOAD-0001: A Sedimentary Defect ──");
|
||||
|
||||
// Simulate the sedimentary pattern: list.contains() inside an O(N) loop.
|
||||
// Defective: list scan O(N) per lookup in O(N) loop → O(N²) total.
|
||||
int N = 1000;
|
||||
List<Integer> haystack = new ArrayList<>();
|
||||
for (int i = 0; i < N; i++) haystack.add(i);
|
||||
|
||||
long defComparisons = 0;
|
||||
for (int i = 0; i < N; i++) {
|
||||
int target = i;
|
||||
for (int j = 0; j < haystack.size(); j++) { // O(N) scan
|
||||
defComparisons++;
|
||||
if (haystack.get(j).equals(target)) break;
|
||||
}
|
||||
}
|
||||
|
||||
// Fixed: set.contains() O(1) per lookup in O(N) loop → O(N) total.
|
||||
java.util.HashSet<Integer> fastSet = new java.util.HashSet<>(haystack);
|
||||
long fixComparisons = 0;
|
||||
for (int i = 0; i < N; i++) {
|
||||
fastSet.contains(i); // O(1) — counted as 1 operation
|
||||
fixComparisons++;
|
||||
}
|
||||
|
||||
// Defective comparisons ~= N*(N+1)/2; fixed = N.
|
||||
assertTrue("MOAD-0001: defective comparisons >> fixed (quadratic vs linear)",
|
||||
defComparisons > fixComparisons * 100,
|
||||
"defective=" + defComparisons + " fixed=" + fixComparisons);
|
||||
|
||||
System.out.println();
|
||||
}
|
||||
|
||||
// ── MOAD-0002: An Intertangled Defect ────────────────────────────────────
|
||||
|
||||
static void testMoad0002_IntertangledDefect() {
|
||||
System.out.println("── MOAD-0002: An Intertangled Defect ──");
|
||||
|
||||
// Medium scale: 500 "sessions", each trying to maintain independent config.
|
||||
int sessionCount = 500;
|
||||
|
||||
// Defective: all sessions share GLOBAL — last writer wins.
|
||||
Moad0002Algorithm.resetGlobal();
|
||||
int lastVolume = -1;
|
||||
for (int i = 0; i < sessionCount; i++) {
|
||||
DefectiveAudioSystem audio = new DefectiveAudioSystem();
|
||||
audio.setVolume(i); // each session sets its own volume
|
||||
lastVolume = i;
|
||||
}
|
||||
// Every session now sees the last writer's volume — isolation is impossible.
|
||||
DefectiveAudioSystem probe = new DefectiveAudioSystem();
|
||||
assertEqual("MOAD-0002 defective: all sessions share last writer's volume",
|
||||
lastVolume, probe.getVolume());
|
||||
|
||||
// Count how many sessions would see their own volume vs the shared value
|
||||
Moad0002Algorithm.resetGlobal();
|
||||
int isolated = 0;
|
||||
for (int i = 0; i < sessionCount; i++) {
|
||||
DefectiveAudioSystem s = new DefectiveAudioSystem();
|
||||
s.setVolume(i);
|
||||
// After setting, check immediately — but another session will overwrite
|
||||
// (In a concurrent model, most would fail; sequentially, all would pass
|
||||
// only if we check before the next set — which is the race window.)
|
||||
}
|
||||
// Defective cannot prove isolation — the last set wins for all.
|
||||
DefectiveAudioSystem last = new DefectiveAudioSystem();
|
||||
last.setVolume(999);
|
||||
DefectiveAudioSystem first = new DefectiveAudioSystem();
|
||||
// first sees 999, not whatever it "set" earlier
|
||||
assertEqual("MOAD-0002 defective: first session trampled by last (cannot coexist)",
|
||||
999, first.getVolume());
|
||||
|
||||
// Fixed: N independent Context objects all coexist.
|
||||
Context[] ctxs = new Context[sessionCount];
|
||||
FixedAudioSystem[] systems = new FixedAudioSystem[sessionCount];
|
||||
for (int i = 0; i < sessionCount; i++) {
|
||||
ctxs[i] = new Context(i, i * 2, "locale-" + i);
|
||||
systems[i] = new FixedAudioSystem(ctxs[i]);
|
||||
}
|
||||
// Each system reads its own volume — all coexist independently.
|
||||
boolean allIsolated = true;
|
||||
for (int i = 0; i < sessionCount; i++) {
|
||||
if (systems[i].getVolume() != i) { allIsolated = false; break; }
|
||||
}
|
||||
assertTrue("MOAD-0002 fixed: all " + sessionCount + " sessions maintain independent volume",
|
||||
allIsolated, "some session saw another session's volume");
|
||||
|
||||
System.out.println();
|
||||
}
|
||||
|
||||
// ── MOAD-0003: A Leaked Context ───────────────────────────────────────────
|
||||
|
||||
static void testMoad0003_LeakedContext() {
|
||||
System.out.println("── MOAD-0003: A Leaked Context ──");
|
||||
|
||||
int requestCount = 500; // simulate 500 requests on the same pooled thread
|
||||
|
||||
// Defective: alternate authenticated and anonymous requests.
|
||||
// Anonymous requests should see null; defective sees stale identity.
|
||||
int leaks = 0;
|
||||
Moad0003Algorithm.reset();
|
||||
for (int i = 0; i < requestCount; i++) {
|
||||
if (i % 2 == 0) {
|
||||
// Authenticated request — sets ThreadLocal but never removes it
|
||||
Moad0003Algorithm.handleDefective("user-" + i);
|
||||
} else {
|
||||
// Anonymous request — should see null, but sees "user-N" (leaked)
|
||||
String identity = Moad0003Algorithm.handleDefectiveAnonymous();
|
||||
if (identity != null) leaks++;
|
||||
}
|
||||
}
|
||||
Moad0003Algorithm.reset();
|
||||
|
||||
// Every anonymous request (250 of them) should have seen a leaked identity
|
||||
assertEqual("MOAD-0003 defective: all anonymous requests leak auth identity",
|
||||
requestCount / 2, leaks);
|
||||
|
||||
// Fixed: same alternating pattern — zero leaks
|
||||
int fixLeaks = 0;
|
||||
for (int i = 0; i < requestCount; i++) {
|
||||
if (i % 2 == 0) {
|
||||
Moad0003Algorithm.handleFixed("user-" + i);
|
||||
} else {
|
||||
String identity = Moad0003Algorithm.handleFixedAnonymous();
|
||||
if (identity != null) fixLeaks++;
|
||||
}
|
||||
}
|
||||
|
||||
assertEqual("MOAD-0003 fixed: zero leaks across " + requestCount + " requests",
|
||||
0, fixLeaks);
|
||||
|
||||
System.out.println();
|
||||
}
|
||||
|
||||
// ── MOAD-0004: A Logged Secret ────────────────────────────────────────────
|
||||
|
||||
static void testMoad0004_LoggedSecret() {
|
||||
System.out.println("── MOAD-0004: A Logged Secret ──");
|
||||
|
||||
// Simulate 1000 requests being logged
|
||||
int requestCount = 1000;
|
||||
int defLeaks = 0;
|
||||
int fixLeaks = 0;
|
||||
|
||||
Map<String, String> headers = Moad0004Algorithm.sampleHeaders();
|
||||
for (int i = 0; i < requestCount; i++) {
|
||||
Result def = Moad0004Algorithm.logDefective(headers);
|
||||
Result fix = Moad0004Algorithm.logFixed(headers);
|
||||
defLeaks += def.credentialLeakCount;
|
||||
fixLeaks += fix.credentialLeakCount;
|
||||
}
|
||||
|
||||
// Defective: 3 credential headers × 1000 requests = 3000 credential exposures
|
||||
assertEqual("MOAD-0004 defective: 3000 credential exposures across 1000 requests",
|
||||
3000, defLeaks);
|
||||
assertEqual("MOAD-0004 fixed: zero credential exposures across 1000 requests",
|
||||
0, fixLeaks);
|
||||
|
||||
// Verify specific sensitive tokens never appear in fixed logs
|
||||
Result fixSample = Moad0004Algorithm.logFixed(headers);
|
||||
assertNotContains("MOAD-0004 fixed: bearer token absent from log",
|
||||
fixSample.logLine, "eyJhbGciOiJSUzI1NiJ9.secret.token");
|
||||
assertNotContains("MOAD-0004 fixed: session cookie absent from log",
|
||||
fixSample.logLine, "abc123def456");
|
||||
|
||||
System.out.println();
|
||||
}
|
||||
|
||||
// ── MOAD-0005: A Thundering Herd ─────────────────────────────────────────
|
||||
|
||||
static void testMoad0005_ThunderingHerd() {
|
||||
System.out.println("── MOAD-0005: A Thundering Herd ──");
|
||||
|
||||
// Medium scale: simulate 500 callers all missing the cache simultaneously.
|
||||
int callerCount = 500;
|
||||
|
||||
int defComputes = Moad0005Algorithm.simulateDefectiveConcurrentMiss(callerCount, "resource");
|
||||
int fixComputes = Moad0005Algorithm.simulateFixedConcurrentMiss(callerCount, "resource");
|
||||
|
||||
// Defective: 500 redundant computes — thundering herd
|
||||
assertEqual("MOAD-0005 defective: 500 concurrent misses → 500 computes (herd)",
|
||||
callerCount, defComputes);
|
||||
// Fixed: exactly 1 compute — herd suppressed
|
||||
assertEqual("MOAD-0005 fixed: 500 concurrent misses → 1 compute (herd suppressed)",
|
||||
1, fixComputes);
|
||||
|
||||
// Amplification factor proves the severity
|
||||
assertTrue("MOAD-0005: defective wastes 500× more compute than fixed",
|
||||
defComputes >= callerCount,
|
||||
"defComputes=" + defComputes + " callerCount=" + callerCount);
|
||||
|
||||
System.out.println();
|
||||
}
|
||||
|
||||
// ── MOAD-0006: A Glass Safe ───────────────────────────────────────────────
|
||||
|
||||
static void testMoad0006_GlassSafe() {
|
||||
System.out.println("── MOAD-0006: A Glass Safe ──");
|
||||
|
||||
DefectiveCredentialStore defStore = new DefectiveCredentialStore();
|
||||
FixedCredentialStore fixStore = new FixedCredentialStore();
|
||||
|
||||
// Store 500 user passwords
|
||||
int userCount = 500;
|
||||
String[] passwords = new String[userCount];
|
||||
for (int i = 0; i < userCount; i++) {
|
||||
passwords[i] = "password-for-user-" + i;
|
||||
defStore.storePassword("user-" + i, passwords[i]);
|
||||
fixStore.storePassword("user-" + i, passwords[i]);
|
||||
}
|
||||
|
||||
// Defective: every password extractable from DB dump
|
||||
int defExtracted = 0;
|
||||
for (int i = 0; i < userCount; i++) {
|
||||
String extracted = defStore.extractPassword("user-" + i);
|
||||
if (passwords[i].equals(extracted)) defExtracted++;
|
||||
}
|
||||
assertEqual("MOAD-0006 defective: all 500 passwords extractable from DB",
|
||||
userCount, defExtracted);
|
||||
|
||||
// Fixed: no extraction — verify still works, but extract is impossible
|
||||
int fixVerified = 0;
|
||||
for (int i = 0; i < userCount; i++) {
|
||||
if (fixStore.verify("user-" + i, passwords[i])) fixVerified++;
|
||||
}
|
||||
assertEqual("MOAD-0006 fixed: all 500 passwords still verify correctly",
|
||||
userCount, fixVerified);
|
||||
|
||||
// Fixed: no two users with same password share same hash (unique salts)
|
||||
String sharedPw = "shared-secret";
|
||||
FixedCredentialStore sharedStore = new FixedCredentialStore();
|
||||
sharedStore.storePassword("alice", sharedPw);
|
||||
sharedStore.storePassword("bob", sharedPw);
|
||||
assertNotEqualBytes("MOAD-0006 fixed: same password → different hashes (salt randomization)",
|
||||
sharedStore.rawHash("alice"), sharedStore.rawHash("bob"));
|
||||
|
||||
System.out.println();
|
||||
}
|
||||
|
||||
// ── MOAD-0007: A Flatland Defect ─────────────────────────────────────────
|
||||
|
||||
static void testMoad0007_FlatlandDefect() {
|
||||
System.out.println("── MOAD-0007: A Flatland Defect ──");
|
||||
|
||||
int N = 2000; // 2000 spatial objects
|
||||
List<SpatialObject> scene = Moad0007Algorithm.buildScene(N, 10000.0);
|
||||
SpatialObject[] index = Moad0007Algorithm.buildIndex(scene);
|
||||
|
||||
// Query: narrow range that matches only ~10% of objects
|
||||
double lo = 9100.0, hi = 9200.0;
|
||||
|
||||
Moad0007Algorithm.Result defResult = Moad0007Algorithm.queryDefective(scene, lo, hi);
|
||||
Moad0007Algorithm.Result fixResult = Moad0007Algorithm.queryFixed(index, lo, hi);
|
||||
|
||||
// Correctness: same hits
|
||||
assertEqual("MOAD-0007: both return same hit count",
|
||||
defResult.hits.size(), fixResult.hits.size());
|
||||
|
||||
// Defective: visits all N=2000 objects
|
||||
assertEqual("MOAD-0007 defective: visits all N=2000 objects",
|
||||
N, defResult.probeCount);
|
||||
|
||||
// Fixed: visits O(log N + k) objects — far fewer than N
|
||||
int maxFixed = (int)(Math.ceil(Math.log(N) / Math.log(2))) + fixResult.hits.size() + 2;
|
||||
assertTrue("MOAD-0007 fixed: visits only O(log N + k) = " + maxFixed + " objects (not all N)",
|
||||
fixResult.probeCount <= maxFixed,
|
||||
"probeCount=" + fixResult.probeCount + " maxExpected=" + maxFixed);
|
||||
|
||||
// Probe ratio proves the speedup
|
||||
double ratio = (double) defResult.probeCount / fixResult.probeCount;
|
||||
assertTrue("MOAD-0007: defective visits 10x+ more objects than fixed at N=2000",
|
||||
ratio > 10.0,
|
||||
"defective=" + defResult.probeCount + " fixed=" + fixResult.probeCount + " ratio=" + ratio);
|
||||
|
||||
System.out.println();
|
||||
}
|
||||
|
||||
// ── MOAD-0009: A Metered Heart ────────────────────────────────────────────
|
||||
|
||||
static void testMoad0009_MeteredHeart() {
|
||||
System.out.println("── MOAD-0009: A Metered Heart ──");
|
||||
|
||||
// Medium scale: 1000 timer ticks, 10 events — 990 wasted firings (99% waste)
|
||||
int ticks = 1000;
|
||||
int eventCount = 10;
|
||||
List<Event> events = Moad0009Algorithm.buildEvents(eventCount, ticks);
|
||||
|
||||
Moad0009Algorithm.Result defResult = Moad0009Algorithm.runDefectiveScheduler(ticks, events);
|
||||
Moad0009Algorithm.Result fixResult = Moad0009Algorithm.runFixedEventDriven(events);
|
||||
|
||||
// Correctness: both process the same events
|
||||
assertEqual("MOAD-0009: both process all 10 events",
|
||||
eventCount, defResult.eventsProcessed);
|
||||
assertEqual("MOAD-0009 fixed: processes all 10 events",
|
||||
eventCount, fixResult.eventsProcessed);
|
||||
|
||||
// Defective: 1000 firings for 10 events = 990 wasted
|
||||
assertEqual("MOAD-0009 defective: 1000 firings for 10 events",
|
||||
ticks, defResult.firings);
|
||||
int wasted = defResult.firings - defResult.eventsProcessed;
|
||||
assertEqual("MOAD-0009 defective: 990 wasted firings (99% waste)", 990, wasted);
|
||||
|
||||
// Fixed: exactly 10 firings — zero waste
|
||||
assertEqual("MOAD-0009 fixed: exactly 10 firings (zero waste)",
|
||||
eventCount, fixResult.firings);
|
||||
|
||||
// Efficiency ratio: fixed is 100× more efficient in firings
|
||||
double ratio = (double) defResult.firings / fixResult.firings;
|
||||
assertTrue("MOAD-0009: defective fires 100× more often than fixed",
|
||||
ratio >= 100.0, "ratio=" + ratio);
|
||||
|
||||
System.out.println();
|
||||
}
|
||||
|
||||
// ── MOAD-0011: A Catastrophic Inheritance ────────────────────────────────
|
||||
|
||||
static void testMoad0011_CatastrophicInheritance() {
|
||||
System.out.println("── MOAD-0011: A Catastrophic Inheritance ──");
|
||||
|
||||
// Structural: all known-bad PCRE patterns detected
|
||||
assertTrue("MOAD-0011: DEFECTIVE_PATTERN_BLEACH detected as catastrophic",
|
||||
Moad0011Algorithm.hasCatastrophicStructure(Moad0011Algorithm.DEFECTIVE_PATTERN_BLEACH),
|
||||
"expected catastrophic");
|
||||
assertTrue("MOAD-0011: DEFECTIVE_PATTERN_CSS detected as catastrophic",
|
||||
Moad0011Algorithm.hasCatastrophicStructure(Moad0011Algorithm.DEFECTIVE_PATTERN_CSS),
|
||||
"expected catastrophic");
|
||||
|
||||
// Fixed patterns pass structural check
|
||||
assertFalse("MOAD-0011: FIXED_PATTERN_BLEACH passes structural check",
|
||||
Moad0011Algorithm.hasCatastrophicStructure(Moad0011Algorithm.FIXED_PATTERN_BLEACH),
|
||||
"expected safe");
|
||||
assertFalse("MOAD-0011: FIXED_PATTERN_CSS passes structural check",
|
||||
Moad0011Algorithm.hasCatastrophicStructure(Moad0011Algorithm.FIXED_PATTERN_CSS),
|
||||
"expected safe");
|
||||
|
||||
// Behavioral at N=12: defective exponential vs fixed linear
|
||||
String adversarial12 = Moad0011Algorithm.adversarialInput(12);
|
||||
Moad0011Algorithm.Result def = Moad0011Algorithm.matchDefective(adversarial12);
|
||||
Moad0011Algorithm.Result fix = Moad0011Algorithm.matchFixed(adversarial12);
|
||||
|
||||
// Both correctly reject the non-matching input
|
||||
assertFalse("MOAD-0011 defective: correctly rejects adversarial N=12", def.matched, "expected no match");
|
||||
assertFalse("MOAD-0011 fixed: correctly rejects adversarial N=12", fix.matched, "expected no match");
|
||||
|
||||
// Steps ratio: defective >> fixed
|
||||
double ratio = (double) def.steps / fix.steps;
|
||||
assertTrue("MOAD-0011: defective 100x+ more steps than fixed at N=12",
|
||||
ratio > 100.0,
|
||||
"defSteps=" + def.steps + " fixSteps=" + fix.steps + " ratio=" + ratio);
|
||||
|
||||
System.out.printf(" INFO: N=12 adversarial: defective=%d steps, fixed=%d steps (%.0fx)%n",
|
||||
def.steps, fix.steps, ratio);
|
||||
|
||||
System.out.println();
|
||||
}
|
||||
|
||||
// ── Helpers ───────────────────────────────────────────────────────────────
|
||||
|
||||
static void assertEqual(String label, int expected, int actual) {
|
||||
if (expected == actual) {
|
||||
System.out.printf(" PASS: %s%n", label);
|
||||
passed++;
|
||||
} else {
|
||||
System.out.printf(" FAIL: %s — expected %d, got %d%n", label, expected, actual);
|
||||
failed++;
|
||||
}
|
||||
}
|
||||
|
||||
static void assertTrue(String label, boolean condition, String detail) {
|
||||
if (condition) {
|
||||
System.out.printf(" PASS: %s%n", label);
|
||||
passed++;
|
||||
} else {
|
||||
System.out.printf(" FAIL: %s — %s%n", label, detail);
|
||||
failed++;
|
||||
}
|
||||
}
|
||||
|
||||
static void assertFalse(String label, boolean condition, String detail) {
|
||||
assertTrue(label, !condition, detail);
|
||||
}
|
||||
|
||||
static void assertNotContains(String label, String haystack, String needle) {
|
||||
if (!haystack.contains(needle)) {
|
||||
System.out.printf(" PASS: %s%n", label);
|
||||
passed++;
|
||||
} else {
|
||||
System.out.printf(" FAIL: %s — '%s' found in log%n", label, needle);
|
||||
failed++;
|
||||
}
|
||||
}
|
||||
|
||||
static void assertNotEqualBytes(String label, byte[] a, byte[] b) {
|
||||
if (!java.util.Arrays.equals(a, b)) {
|
||||
System.out.printf(" PASS: %s%n", label);
|
||||
passed++;
|
||||
} else {
|
||||
System.out.printf(" FAIL: %s — arrays are equal%n", label);
|
||||
failed++;
|
||||
}
|
||||
}
|
||||
}
|
||||
84
tests/support/Moad0002Algorithm.java
Normal file
84
tests/support/Moad0002Algorithm.java
Normal file
|
|
@ -0,0 +1,84 @@
|
|||
package support;
|
||||
|
||||
/**
|
||||
* MOAD-0002: An Intertangled Defect.
|
||||
*
|
||||
* Defect: independent subsystems (Audio, Display) share a single mutable static
|
||||
* state object. Any write by one subsystem is immediately visible to all others.
|
||||
* Two independent execution contexts cannot coexist — they trample each other's
|
||||
* configuration silently, with no exception thrown.
|
||||
*
|
||||
* Fix: each subsystem receives an immutable Context snapshot at construction.
|
||||
* No shared state. N contexts exist independently, and subsystem writes
|
||||
* affect only the context they own.
|
||||
*
|
||||
* Scanner detects: static mutable fields accessed from multiple subsystem classes
|
||||
* without synchronization or phase isolation.
|
||||
*/
|
||||
public class Moad0002Algorithm {
|
||||
|
||||
// ── Defective: shared mutable global state ────────────────────────────────
|
||||
|
||||
/**
|
||||
* God object holding all subsystem configuration.
|
||||
* The intertangle point: audio, display, and locale all live here.
|
||||
*/
|
||||
public static final class SharedState {
|
||||
public int volume = 50;
|
||||
public int brightness = 100;
|
||||
public String locale = "en";
|
||||
}
|
||||
|
||||
/** Singleton — all defective subsystems reference this one object. */
|
||||
public static final SharedState GLOBAL = new SharedState();
|
||||
|
||||
public static final class DefectiveAudioSystem {
|
||||
public void setVolume(int v) { GLOBAL.volume = v; }
|
||||
public int getVolume() { return GLOBAL.volume; }
|
||||
public void setLocale(String l) { GLOBAL.locale = l; }
|
||||
public String getLocale() { return GLOBAL.locale; }
|
||||
}
|
||||
|
||||
public static final class DefectiveDisplaySystem {
|
||||
public void setBrightness(int b) { GLOBAL.brightness = b; }
|
||||
public int getBrightness() { return GLOBAL.brightness; }
|
||||
public void setLocale(String l) { GLOBAL.locale = l; }
|
||||
public String getLocale() { return GLOBAL.locale; }
|
||||
}
|
||||
|
||||
// ── Fixed: each subsystem owns an isolated immutable context ──────────────
|
||||
|
||||
/** Immutable per-context snapshot. Passed to subsystems at construction. */
|
||||
public static final class Context {
|
||||
public final int volume;
|
||||
public final int brightness;
|
||||
public final String locale;
|
||||
|
||||
public Context(int volume, int brightness, String locale) {
|
||||
this.volume = volume;
|
||||
this.brightness = brightness;
|
||||
this.locale = locale;
|
||||
}
|
||||
}
|
||||
|
||||
public static final class FixedAudioSystem {
|
||||
private final Context ctx;
|
||||
public FixedAudioSystem(Context ctx) { this.ctx = ctx; }
|
||||
public int getVolume() { return ctx.volume; }
|
||||
public String getLocale() { return ctx.locale; }
|
||||
}
|
||||
|
||||
public static final class FixedDisplaySystem {
|
||||
private final Context ctx;
|
||||
public FixedDisplaySystem(Context ctx) { this.ctx = ctx; }
|
||||
public int getBrightness() { return ctx.brightness; }
|
||||
public String getLocale() { return ctx.locale; }
|
||||
}
|
||||
|
||||
/** Reset GLOBAL between test cases so tests do not bleed into each other. */
|
||||
public static void resetGlobal() {
|
||||
GLOBAL.volume = 50;
|
||||
GLOBAL.brightness = 100;
|
||||
GLOBAL.locale = "en";
|
||||
}
|
||||
}
|
||||
86
tests/support/Moad0003Algorithm.java
Normal file
86
tests/support/Moad0003Algorithm.java
Normal file
|
|
@ -0,0 +1,86 @@
|
|||
package support;
|
||||
|
||||
/**
|
||||
* MOAD-0003: A Leaked Context.
|
||||
*
|
||||
* Defect: request-scoped identity (user principal, tenant ID, transaction state)
|
||||
* stored in a ThreadLocal whose lifetime is the thread, not the unit of work.
|
||||
* When a thread-pool thread is reused for a second request, stale identity from
|
||||
* the first request bleeds into the second — even though the second request
|
||||
* never set any identity.
|
||||
*
|
||||
* Fix: always call ThreadLocal.remove() in a finally block after the request
|
||||
* completes. Alternatively, pass context explicitly as a parameter (preferred).
|
||||
*
|
||||
* Scanner detects: ThreadLocal fields without a paired remove() call in a
|
||||
* finally block on the same code path that calls set().
|
||||
*/
|
||||
public class Moad0003Algorithm {
|
||||
|
||||
/** The ambient carrier — shared across the simulated thread pool. */
|
||||
public static final ThreadLocal<String> REQUEST_IDENTITY = new ThreadLocal<>();
|
||||
|
||||
// ── Defective: ThreadLocal set but never removed ───────────────────────
|
||||
|
||||
/**
|
||||
* Simulates handling one HTTP request in the defective pattern.
|
||||
* Sets the ThreadLocal to 'identity' and processes the request.
|
||||
* DEFECT: never calls remove() — stale identity remains on the thread.
|
||||
*
|
||||
* @return the identity seen during this request
|
||||
*/
|
||||
public static String handleDefective(String identity) {
|
||||
if (identity != null) {
|
||||
REQUEST_IDENTITY.set(identity);
|
||||
}
|
||||
// ... simulate request processing ...
|
||||
return REQUEST_IDENTITY.get();
|
||||
// DEFECT: no REQUEST_IDENTITY.remove() — next request sees this identity
|
||||
}
|
||||
|
||||
/**
|
||||
* Simulates the next request on the same pooled thread.
|
||||
* The caller does NOT set an identity (anonymous request).
|
||||
* DEFECT: returns whatever the previous request left behind.
|
||||
*
|
||||
* @return the identity seen — should be null but is the previous caller's identity
|
||||
*/
|
||||
public static String handleDefectiveAnonymous() {
|
||||
// Does not call REQUEST_IDENTITY.set() — anonymous request
|
||||
return REQUEST_IDENTITY.get(); // DEFECT: returns stale identity from previous request
|
||||
}
|
||||
|
||||
// ── Fixed: ThreadLocal always removed in finally ───────────────────────
|
||||
|
||||
/**
|
||||
* Simulates handling one HTTP request in the fixed pattern.
|
||||
* Sets the ThreadLocal, processes, then ALWAYS removes in finally.
|
||||
*
|
||||
* @return the identity seen during this request
|
||||
*/
|
||||
public static String handleFixed(String identity) {
|
||||
if (identity != null) {
|
||||
REQUEST_IDENTITY.set(identity);
|
||||
}
|
||||
try {
|
||||
return REQUEST_IDENTITY.get();
|
||||
} finally {
|
||||
REQUEST_IDENTITY.remove(); // FIX: always clean up, even on exception
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Simulates the next request on the same pooled thread (anonymous).
|
||||
* After the fixed handler ran, the ThreadLocal is null.
|
||||
*
|
||||
* @return the identity seen — null (clean)
|
||||
*/
|
||||
public static String handleFixedAnonymous() {
|
||||
return REQUEST_IDENTITY.get(); // FIX: null — previous request cleaned up
|
||||
}
|
||||
|
||||
/** Reset ThreadLocal between test cases. */
|
||||
public static void reset() {
|
||||
REQUEST_IDENTITY.remove();
|
||||
}
|
||||
}
|
||||
95
tests/support/Moad0004Algorithm.java
Normal file
95
tests/support/Moad0004Algorithm.java
Normal file
|
|
@ -0,0 +1,95 @@
|
|||
package support;
|
||||
|
||||
import java.util.LinkedHashMap;
|
||||
import java.util.Map;
|
||||
import java.util.Set;
|
||||
|
||||
/**
|
||||
* MOAD-0004: A Logged Secret.
|
||||
*
|
||||
* Defect: HTTP request headers are serialized to a log string verbatim.
|
||||
* Authorization, Cookie, X-API-Key, and Proxy-Authorization headers contain
|
||||
* bearer tokens and session credentials. Once logged, these persist across
|
||||
* restarts, propagate through log aggregation pipelines, and remain readable
|
||||
* for weeks at retention-period scale.
|
||||
*
|
||||
* Fix: apply a credential denylist at the log-serialization layer.
|
||||
* Redact or omit headers whose names match known credential carriers.
|
||||
* Functional behavior (routing, auth checks) is unaffected.
|
||||
*
|
||||
* Scanner detects: header-map serialization (toString, stream map, for-each
|
||||
* with string append) without a denylist filter on known credential header names.
|
||||
*/
|
||||
public class Moad0004Algorithm {
|
||||
|
||||
/** Headers that carry credentials and must never appear in logs. */
|
||||
public static final Set<String> CREDENTIAL_HEADERS = Set.of(
|
||||
"authorization",
|
||||
"cookie",
|
||||
"x-api-key",
|
||||
"proxy-authorization",
|
||||
"x-auth-token"
|
||||
);
|
||||
|
||||
/** Result of a log operation: the string written and a count of leaked credentials. */
|
||||
public static final class Result {
|
||||
public final String logLine;
|
||||
public final int credentialLeakCount;
|
||||
|
||||
public Result(String logLine, int credentialLeakCount) {
|
||||
this.logLine = logLine;
|
||||
this.credentialLeakCount = credentialLeakCount;
|
||||
}
|
||||
}
|
||||
|
||||
// ── Defective: logs all headers verbatim ─────────────────────────────────
|
||||
|
||||
/**
|
||||
* Serializes the full header map to a log line with no filtering.
|
||||
* DEFECT: credential headers appear in cleartext in the log string.
|
||||
*/
|
||||
public static Result logDefective(Map<String, String> headers) {
|
||||
StringBuilder sb = new StringBuilder("REQUEST headers: ");
|
||||
int leaks = 0;
|
||||
for (Map.Entry<String, String> e : headers.entrySet()) {
|
||||
sb.append(e.getKey()).append('=').append(e.getValue()).append(' ');
|
||||
if (CREDENTIAL_HEADERS.contains(e.getKey().toLowerCase())) {
|
||||
leaks++;
|
||||
}
|
||||
}
|
||||
return new Result(sb.toString().trim(), leaks);
|
||||
}
|
||||
|
||||
// ── Fixed: redacts credential headers before serialization ────────────────
|
||||
|
||||
private static final String REDACTED = "[REDACTED]";
|
||||
|
||||
/**
|
||||
* Serializes the header map, replacing credential header values with [REDACTED].
|
||||
* FIX: credential headers appear in the log line with redacted values.
|
||||
* Downstream consumers still see header names (for debugging) but not values.
|
||||
*/
|
||||
public static Result logFixed(Map<String, String> headers) {
|
||||
StringBuilder sb = new StringBuilder("REQUEST headers: ");
|
||||
for (Map.Entry<String, String> e : headers.entrySet()) {
|
||||
String value = CREDENTIAL_HEADERS.contains(e.getKey().toLowerCase())
|
||||
? REDACTED
|
||||
: e.getValue();
|
||||
sb.append(e.getKey()).append('=').append(value).append(' ');
|
||||
}
|
||||
return new Result(sb.toString().trim(), 0);
|
||||
}
|
||||
|
||||
/** Build a representative HTTP request header map for testing. */
|
||||
public static Map<String, String> sampleHeaders() {
|
||||
Map<String, String> h = new LinkedHashMap<>();
|
||||
h.put("Host", "api.example.com");
|
||||
h.put("Content-Type", "application/json");
|
||||
h.put("Authorization", "Bearer eyJhbGciOiJSUzI1NiJ9.secret.token");
|
||||
h.put("Cookie", "session=abc123def456; csrf=xyz");
|
||||
h.put("X-Request-Id", "req-7f3a9c");
|
||||
h.put("X-Api-Key", "sk-prod-1234567890abcdef");
|
||||
h.put("Accept", "application/json");
|
||||
return h;
|
||||
}
|
||||
}
|
||||
125
tests/support/Moad0005Algorithm.java
Normal file
125
tests/support/Moad0005Algorithm.java
Normal file
|
|
@ -0,0 +1,125 @@
|
|||
package support;
|
||||
|
||||
import java.util.HashMap;
|
||||
import java.util.concurrent.ConcurrentHashMap;
|
||||
import java.util.concurrent.atomic.AtomicInteger;
|
||||
import java.util.function.Supplier;
|
||||
|
||||
/**
|
||||
* MOAD-0005: CWE-362 — A Thundering Herd.
|
||||
*
|
||||
* Defect: a cache lookup uses the pattern get() + null-check + compute + put()
|
||||
* with no lock or synchronization around the compute path. When N threads all
|
||||
* miss the cache simultaneously, each one sees null, each one runs the expensive
|
||||
* computation, and all N results race to be stored. N-1 computes are wasted.
|
||||
* Under high concurrency, this saturates the compute resource (CPU, DB, network)
|
||||
* with redundant work.
|
||||
*
|
||||
* Fix: ConcurrentHashMap.computeIfAbsent() guarantees exactly one compute per
|
||||
* key under concurrent access. All other callers block until the first compute
|
||||
* completes, then receive the cached value.
|
||||
*
|
||||
* Scanner detects: HashMap.get() + null check + compute + HashMap.put() on the
|
||||
* same key, without a surrounding synchronized block or lock acquisition.
|
||||
*
|
||||
* Note: unit tests simulate the concurrent race with a single-threaded model
|
||||
* (all callers check before any put). Integration tests use real threads.
|
||||
*/
|
||||
public class Moad0005Algorithm {
|
||||
|
||||
/** Counts how many times the "expensive" compute function was called. */
|
||||
public static final AtomicInteger COMPUTE_CALLS = new AtomicInteger(0);
|
||||
|
||||
/**
|
||||
* Simulates an expensive computation (DB query, RPC, etc.).
|
||||
* Increments COMPUTE_CALLS so tests can verify how many times it ran.
|
||||
*/
|
||||
public static String expensiveCompute(String key) {
|
||||
COMPUTE_CALLS.incrementAndGet();
|
||||
return "value-for-" + key;
|
||||
}
|
||||
|
||||
// ── Defective: get + null-check + compute + put ───────────────────────────
|
||||
|
||||
/**
|
||||
* Defective cache backed by unsynchronized HashMap.
|
||||
*
|
||||
* The defect: get() and put() are not atomic. If N callers all invoke
|
||||
* getOrCompute() before any of them completes, they all see null and all
|
||||
* call expensiveCompute().
|
||||
*/
|
||||
public static final class DefectiveCache {
|
||||
private final HashMap<String, String> cache = new HashMap<>();
|
||||
|
||||
public String getOrCompute(String key) {
|
||||
String value = cache.get(key); // 1. lookup — may be null for N callers simultaneously
|
||||
if (value == null) { // 2. all N see null
|
||||
value = expensiveCompute(key); // 3. all N compute — HERD
|
||||
cache.put(key, value); // 4. last writer wins, N-1 computes wasted
|
||||
}
|
||||
return value;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Simulates N callers all hitting a cold DefectiveCache simultaneously.
|
||||
*
|
||||
* All callers read before any put — the race window. Returns the number
|
||||
* of times expensiveCompute was called (should be 1, but returns N for defective).
|
||||
*/
|
||||
public static int simulateDefectiveConcurrentMiss(int callerCount, String key) {
|
||||
COMPUTE_CALLS.set(0);
|
||||
DefectiveCache cache = new DefectiveCache();
|
||||
|
||||
// Phase 1: all callers read — none sees a cached value yet.
|
||||
String[] seen = new String[callerCount];
|
||||
for (int i = 0; i < callerCount; i++) {
|
||||
seen[i] = cache.cache.get(key); // all see null
|
||||
}
|
||||
|
||||
// Phase 2: all callers that saw null compute and put.
|
||||
for (int i = 0; i < callerCount; i++) {
|
||||
if (seen[i] == null) {
|
||||
String v = expensiveCompute(key);
|
||||
cache.cache.put(key, v);
|
||||
}
|
||||
}
|
||||
|
||||
return COMPUTE_CALLS.get(); // DEFECT: returns callerCount
|
||||
}
|
||||
|
||||
// ── Fixed: computeIfAbsent ────────────────────────────────────────────────
|
||||
|
||||
/**
|
||||
* Fixed cache backed by ConcurrentHashMap.computeIfAbsent().
|
||||
*
|
||||
* The fix: computeIfAbsent() is atomic per key. The first caller computes;
|
||||
* all subsequent callers block until the value is ready, then receive it.
|
||||
* expensiveCompute() runs exactly once per key regardless of concurrency.
|
||||
*/
|
||||
public static final class FixedCache {
|
||||
private final ConcurrentHashMap<String, String> cache = new ConcurrentHashMap<>();
|
||||
|
||||
public String getOrCompute(String key) {
|
||||
return cache.computeIfAbsent(key, k -> expensiveCompute(k));
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Simulates N callers all hitting a cold FixedCache.
|
||||
* Returns the number of times expensiveCompute was called (always 1).
|
||||
*/
|
||||
public static int simulateFixedConcurrentMiss(int callerCount, String key) {
|
||||
COMPUTE_CALLS.set(0);
|
||||
FixedCache cache = new FixedCache();
|
||||
for (int i = 0; i < callerCount; i++) {
|
||||
cache.getOrCompute(key);
|
||||
}
|
||||
return COMPUTE_CALLS.get(); // FIX: always 1
|
||||
}
|
||||
|
||||
/** Reset compute counter between test cases. */
|
||||
public static void resetCounter() {
|
||||
COMPUTE_CALLS.set(0);
|
||||
}
|
||||
}
|
||||
130
tests/support/Moad0006Algorithm.java
Normal file
130
tests/support/Moad0006Algorithm.java
Normal file
|
|
@ -0,0 +1,130 @@
|
|||
package support;
|
||||
|
||||
import java.nio.charset.StandardCharsets;
|
||||
import java.security.MessageDigest;
|
||||
import java.security.NoSuchAlgorithmException;
|
||||
import java.security.SecureRandom;
|
||||
import java.util.Arrays;
|
||||
import java.util.Base64;
|
||||
import java.util.HashMap;
|
||||
import java.util.Map;
|
||||
|
||||
/**
|
||||
* MOAD-0006: CWE-257 — A Glass Safe.
|
||||
*
|
||||
* Defect: credentials stored in recoverable form — plaintext, Base64 encoding,
|
||||
* or reversible encryption. Anyone with read access to the credential store
|
||||
* (DB dump, log file, backup) can reconstruct the original secret.
|
||||
*
|
||||
* Variant: Mailman 2.x actively emails list passwords to members on a monthly
|
||||
* schedule, because it stores them in recoverable form.
|
||||
*
|
||||
* Fix: one-way hashing with salt (SHA-256 + random salt shown here; bcrypt or
|
||||
* Argon2 preferred in production). The stored value cannot be reversed to
|
||||
* recover the original credential — only verification (hash-and-compare) works.
|
||||
*
|
||||
* Scanner detects: Base64.encode/decode on password-shaped values, or direct
|
||||
* string equality comparison between a stored field and user-supplied input.
|
||||
*/
|
||||
public class Moad0006Algorithm {
|
||||
|
||||
// ── Defective: Base64 storage (reversible) ────────────────────────────────
|
||||
|
||||
/**
|
||||
* Credential store that encodes passwords with Base64.
|
||||
* DEFECT: Base64 is an encoding, not a hash. decode() recovers the original.
|
||||
*/
|
||||
public static final class DefectiveCredentialStore {
|
||||
private final Map<String, String> store = new HashMap<>();
|
||||
|
||||
/** Store password encoded as Base64. DEFECT: reversible. */
|
||||
public void storePassword(String username, String password) {
|
||||
store.put(username,
|
||||
Base64.getEncoder().encodeToString(
|
||||
password.getBytes(StandardCharsets.UTF_8)));
|
||||
}
|
||||
|
||||
/** Verify by encoding the candidate and comparing. */
|
||||
public boolean verify(String username, String password) {
|
||||
String stored = store.get(username);
|
||||
if (stored == null) return false;
|
||||
String candidate = Base64.getEncoder().encodeToString(
|
||||
password.getBytes(StandardCharsets.UTF_8));
|
||||
return stored.equals(candidate);
|
||||
}
|
||||
|
||||
/**
|
||||
* DEFECT: attacker with DB read access calls this to recover original password.
|
||||
* Returns the plaintext password — the glass safe opens.
|
||||
*/
|
||||
public String extractPassword(String username) {
|
||||
String stored = store.get(username);
|
||||
if (stored == null) return null;
|
||||
return new String(Base64.getDecoder().decode(stored), StandardCharsets.UTF_8);
|
||||
}
|
||||
|
||||
/** Exposes raw stored value (what a DB dump would show). */
|
||||
public String rawStored(String username) {
|
||||
return store.get(username);
|
||||
}
|
||||
}
|
||||
|
||||
// ── Fixed: SHA-256 + salt (one-way) ──────────────────────────────────────
|
||||
|
||||
private static final SecureRandom RNG = new SecureRandom();
|
||||
|
||||
/** Generate a fresh 16-byte random salt. */
|
||||
public static byte[] generateSalt() {
|
||||
byte[] salt = new byte[16];
|
||||
RNG.nextBytes(salt);
|
||||
return salt;
|
||||
}
|
||||
|
||||
/** Hash password with salt using SHA-256. */
|
||||
public static byte[] sha256(String password, byte[] salt) {
|
||||
try {
|
||||
MessageDigest md = MessageDigest.getInstance("SHA-256");
|
||||
md.update(salt);
|
||||
return md.digest(password.getBytes(StandardCharsets.UTF_8));
|
||||
} catch (NoSuchAlgorithmException e) {
|
||||
throw new RuntimeException(e); // SHA-256 always available in Java
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Credential store that hashes passwords with SHA-256 + random salt.
|
||||
* FIX: no extraction method exists — stored value cannot be reversed.
|
||||
*/
|
||||
public static final class FixedCredentialStore {
|
||||
private final Map<String, byte[]> salts = new HashMap<>();
|
||||
private final Map<String, byte[]> hashes = new HashMap<>();
|
||||
|
||||
/** Store password as SHA-256(salt || password). */
|
||||
public void storePassword(String username, String password) {
|
||||
byte[] salt = generateSalt();
|
||||
byte[] hash = sha256(password, salt);
|
||||
salts.put(username, salt);
|
||||
hashes.put(username, hash);
|
||||
}
|
||||
|
||||
/** Verify by hashing candidate with stored salt and comparing. */
|
||||
public boolean verify(String username, String password) {
|
||||
byte[] salt = salts.get(username);
|
||||
byte[] hash = hashes.get(username);
|
||||
if (salt == null || hash == null) return false;
|
||||
return Arrays.equals(sha256(password, salt), hash);
|
||||
}
|
||||
|
||||
/** Exposes raw stored hash (what a DB dump would show — unrecoverable). */
|
||||
public byte[] rawHash(String username) {
|
||||
return hashes.get(username);
|
||||
}
|
||||
|
||||
/** Exposes raw salt (what a DB dump would show). */
|
||||
public byte[] rawSalt(String username) {
|
||||
return salts.get(username);
|
||||
}
|
||||
|
||||
// FIX: no extractPassword() method. DB access gives hash+salt, not plaintext.
|
||||
}
|
||||
}
|
||||
139
tests/support/Moad0007Algorithm.java
Normal file
139
tests/support/Moad0007Algorithm.java
Normal file
|
|
@ -0,0 +1,139 @@
|
|||
package support;
|
||||
|
||||
import java.util.ArrayList;
|
||||
import java.util.Arrays;
|
||||
import java.util.List;
|
||||
|
||||
/**
|
||||
* MOAD-0007: CWE-407 — A Flatland Defect.
|
||||
*
|
||||
* Defect: spatial data with inherent geometric structure queried by O(N) linear
|
||||
* scan. Every spatial query — raycasting, collision detection, nearest-neighbor
|
||||
* — visits all N objects, ignoring the structure that could prune to O(log N).
|
||||
*
|
||||
* Confirmed instances: three.js (flat mesh array), OGRE3D, Panda3D, unsandbox.
|
||||
* Each object added to the scene makes every subsequent query more expensive.
|
||||
*
|
||||
* Fix: organize objects into a spatial index (1D sorted array shown here; BVH
|
||||
* or k-d tree in production). Queries skip entire subtrees via binary search.
|
||||
*
|
||||
* This specimen models a 1-D spatial query: N objects occupy positions along an
|
||||
* axis; a query asks for all objects within a range [lo, hi]. The defective
|
||||
* implementation visits all N objects; the fixed implementation binary-searches
|
||||
* to the first object in range and scans only the matching interval.
|
||||
*
|
||||
* Scanner detects: for-each / for-i loop over a list of spatial objects inside
|
||||
* a query/intersect/raycast/collision method, with no early-exit or index prune.
|
||||
*/
|
||||
public class Moad0007Algorithm {
|
||||
|
||||
/** A spatial object with a 1-D position (x-axis). */
|
||||
public static final class SpatialObject {
|
||||
public final String id;
|
||||
public final double position;
|
||||
|
||||
public SpatialObject(String id, double position) {
|
||||
this.id = id;
|
||||
this.position = position;
|
||||
}
|
||||
|
||||
@Override public String toString() {
|
||||
return id + "@" + position;
|
||||
}
|
||||
}
|
||||
|
||||
/** Result of a spatial range query: matching objects and probe count. */
|
||||
public static final class Result {
|
||||
public final List<SpatialObject> hits;
|
||||
public final int probeCount;
|
||||
|
||||
public Result(List<SpatialObject> hits, int probeCount) {
|
||||
this.hits = hits;
|
||||
this.probeCount = probeCount;
|
||||
}
|
||||
}
|
||||
|
||||
// ── Defective: linear scan O(N) ───────────────────────────────────────────
|
||||
|
||||
/**
|
||||
* Range query using a flat list: visits every object regardless of position.
|
||||
* DEFECT: probeCount == N for all queries, even when zero objects match.
|
||||
*
|
||||
* @param objects unsorted flat list of spatial objects
|
||||
* @param lo range lower bound (inclusive)
|
||||
* @param hi range upper bound (inclusive)
|
||||
*/
|
||||
public static Result queryDefective(List<SpatialObject> objects, double lo, double hi) {
|
||||
List<SpatialObject> hits = new ArrayList<>();
|
||||
int probes = 0;
|
||||
for (SpatialObject obj : objects) { // DEFECT: visit all N
|
||||
probes++;
|
||||
if (obj.position >= lo && obj.position <= hi) {
|
||||
hits.add(obj);
|
||||
}
|
||||
}
|
||||
return new Result(hits, probes);
|
||||
}
|
||||
|
||||
// ── Fixed: binary search O(log N + k) ────────────────────────────────────
|
||||
|
||||
/**
|
||||
* Builds a sorted spatial index from a flat list.
|
||||
* Call once per scene; query many times.
|
||||
*
|
||||
* @param objects objects in any order
|
||||
* @return new array sorted by position ascending
|
||||
*/
|
||||
public static SpatialObject[] buildIndex(List<SpatialObject> objects) {
|
||||
SpatialObject[] arr = objects.toArray(new SpatialObject[0]);
|
||||
Arrays.sort(arr, (a, b) -> Double.compare(a.position, b.position));
|
||||
return arr;
|
||||
}
|
||||
|
||||
/**
|
||||
* Range query using sorted index: binary-searches to first object in [lo, hi],
|
||||
* then scans forward until position exceeds hi.
|
||||
*
|
||||
* FIX: probeCount == O(log N + k) where k is the number of hits.
|
||||
* For a query that returns zero hits, probeCount is at most O(log N).
|
||||
*
|
||||
* @param index sorted array produced by buildIndex()
|
||||
* @param lo range lower bound (inclusive)
|
||||
* @param hi range upper bound (inclusive)
|
||||
*/
|
||||
public static Result queryFixed(SpatialObject[] index, double lo, double hi) {
|
||||
List<SpatialObject> hits = new ArrayList<>();
|
||||
int probes = 0;
|
||||
|
||||
// Binary search for first position >= lo
|
||||
int left = 0, right = index.length;
|
||||
while (left < right) {
|
||||
probes++;
|
||||
int mid = (left + right) >>> 1;
|
||||
if (index[mid].position < lo) {
|
||||
left = mid + 1;
|
||||
} else {
|
||||
right = mid;
|
||||
}
|
||||
}
|
||||
|
||||
// Linear scan from 'left' until position > hi
|
||||
for (int i = left; i < index.length; i++) {
|
||||
probes++;
|
||||
if (index[i].position > hi) break; // FIX: early exit — skip tail
|
||||
hits.add(index[i]);
|
||||
}
|
||||
|
||||
return new Result(hits, probes);
|
||||
}
|
||||
|
||||
/** Build a list of N objects uniformly spaced in [0, maxPos]. */
|
||||
public static List<SpatialObject> buildScene(int n, double maxPos) {
|
||||
List<SpatialObject> objects = new ArrayList<>(n);
|
||||
for (int i = 0; i < n; i++) {
|
||||
double pos = (n == 1) ? 0 : maxPos * i / (n - 1);
|
||||
objects.add(new SpatialObject("obj-" + i, pos));
|
||||
}
|
||||
return objects;
|
||||
}
|
||||
}
|
||||
119
tests/support/Moad0009Algorithm.java
Normal file
119
tests/support/Moad0009Algorithm.java
Normal file
|
|
@ -0,0 +1,119 @@
|
|||
package support;
|
||||
|
||||
import java.util.ArrayList;
|
||||
import java.util.List;
|
||||
|
||||
/**
|
||||
* MOAD-0009: A Metered Heart.
|
||||
*
|
||||
* Defect: a scheduled job fires on a fixed timer interval regardless of whether
|
||||
* any event warrants the execution. Two forms:
|
||||
* (a) State-repair: patches broken state during a visible glitch window
|
||||
* instead of preventing the broken state at its source.
|
||||
* (b) Report-generation: recomputes everything from scratch on each tick
|
||||
* instead of responding to real data-change events.
|
||||
*
|
||||
* Both substitute time-delayed blind repetition for correct event-driven design.
|
||||
* A Metered Heart cannot tell the truth about its own state — it only knows
|
||||
* the clock. Between ticks, the world is wrong and nobody knows.
|
||||
*
|
||||
* Fix: event-driven listener fires exactly once per event, immediately, with
|
||||
* no polling overhead and no stale-state window.
|
||||
*
|
||||
* Scanner detects: Timer.scheduleAtFixedRate, ScheduledExecutorService.scheduleAtFixedRate,
|
||||
* crontab entries, @Scheduled annotations — where the job body reads state and
|
||||
* conditionally acts (the polling tell), rather than receiving an event payload.
|
||||
*/
|
||||
public class Moad0009Algorithm {
|
||||
|
||||
/** An event with a name and a simulated arrival time (tick). */
|
||||
public static final class Event {
|
||||
public final String name;
|
||||
public final int arrivalTick; // which timer tick this event arrives on
|
||||
|
||||
public Event(String name, int arrivalTick) {
|
||||
this.name = name;
|
||||
this.arrivalTick = arrivalTick;
|
||||
}
|
||||
}
|
||||
|
||||
/** Result: how many times the job fired and how many events it processed. */
|
||||
public static final class Result {
|
||||
public final int firings; // how many times the job ran
|
||||
public final int eventsProcessed; // how many events were handled
|
||||
public final int totalEvents; // total events that existed
|
||||
public final List<String> processedNames;
|
||||
|
||||
public Result(int firings, int eventsProcessed, int totalEvents,
|
||||
List<String> processedNames) {
|
||||
this.firings = firings;
|
||||
this.eventsProcessed = eventsProcessed;
|
||||
this.totalEvents = totalEvents;
|
||||
this.processedNames = processedNames;
|
||||
}
|
||||
}
|
||||
|
||||
// ── Defective: polling scheduler ─────────────────────────────────────────
|
||||
|
||||
/**
|
||||
* Simulates a timer-driven job that fires every tick for totalTicks ticks.
|
||||
* DEFECT: the job fires even when there are no events to process — wasting
|
||||
* CPU, database I/O, and thread time on empty polls.
|
||||
*
|
||||
* @param totalTicks number of timer firings to simulate
|
||||
* @param events events to be processed (each has an arrivalTick)
|
||||
* @return result showing wasted firings vs useful work
|
||||
*/
|
||||
public static Result runDefectiveScheduler(int totalTicks, List<Event> events) {
|
||||
int firings = 0;
|
||||
int eventsProcessed = 0;
|
||||
List<String> processedNames = new ArrayList<>();
|
||||
|
||||
for (int tick = 0; tick < totalTicks; tick++) {
|
||||
firings++; // DEFECT: fires every tick, useful or not
|
||||
|
||||
// Scan for pending events (simulates a DB poll or queue drain)
|
||||
for (Event e : events) {
|
||||
if (e.arrivalTick == tick) {
|
||||
eventsProcessed++;
|
||||
processedNames.add(e.name);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return new Result(firings, eventsProcessed, events.size(), processedNames);
|
||||
}
|
||||
|
||||
// ── Fixed: event-driven listener ─────────────────────────────────────────
|
||||
|
||||
/**
|
||||
* Simulates an event-driven listener that fires exactly once per event.
|
||||
* FIX: no timer, no polling — the job runs only when an event arrives.
|
||||
* No CPU wasted on empty ticks. No stale-state window between ticks.
|
||||
*
|
||||
* @param events events to process
|
||||
* @return result showing one firing per event, zero wasted firings
|
||||
*/
|
||||
public static Result runFixedEventDriven(List<Event> events) {
|
||||
int firings = 0;
|
||||
List<String> processedNames = new ArrayList<>();
|
||||
|
||||
// FIX: each event triggers exactly one handler invocation
|
||||
for (Event e : events) {
|
||||
firings++; // fired because an event arrived
|
||||
processedNames.add(e.name);
|
||||
}
|
||||
|
||||
return new Result(firings, firings, events.size(), processedNames);
|
||||
}
|
||||
|
||||
/** Build a list of M events spread across [0, maxTick). */
|
||||
public static List<Event> buildEvents(int count, int maxTick) {
|
||||
List<Event> events = new ArrayList<>(count);
|
||||
for (int i = 0; i < count; i++) {
|
||||
int tick = (count == 1) ? 0 : (maxTick - 1) * i / (count - 1);
|
||||
events.add(new Event("event-" + i, tick));
|
||||
}
|
||||
return events;
|
||||
}
|
||||
}
|
||||
216
tests/support/Moad0011Algorithm.java
Normal file
216
tests/support/Moad0011Algorithm.java
Normal file
|
|
@ -0,0 +1,216 @@
|
|||
package support;
|
||||
|
||||
import java.util.regex.Pattern;
|
||||
import java.util.regex.PatternSyntaxException;
|
||||
|
||||
/**
|
||||
* MOAD-0011: CWE-1333 — A Catastrophic Inheritance.
|
||||
*
|
||||
* Defect: a PCRE-compatible regex engine inherits Perl's backtracking NFA
|
||||
* semantics. Applied to user-controlled input with nested quantifiers or
|
||||
* ambiguous alternation, the engine explores O(2^N) parse trees before
|
||||
* concluding no match. The defect propagates through intellectual lineage:
|
||||
* Perl designed the backtracking NFA in 1987, PCRE codified it, and every
|
||||
* language that adopted Perl's regex syntax inherited the worst-case complexity.
|
||||
*
|
||||
* Confirmed instance: bleach 3.x sanitize_css gauntlet pattern — 12-second hang
|
||||
* on 71-char input. Java's java.util.regex uses backtracking NFA and exhibits
|
||||
* the same catastrophic behavior on the same class of patterns.
|
||||
*
|
||||
* Fix: restructure the pattern to eliminate nested quantifiers and ambiguous
|
||||
* alternation, or switch to a linear NFA engine (RE2, Rust regex) that
|
||||
* guarantees O(N) matching with no catastrophic backtracking.
|
||||
*
|
||||
* This specimen proves the defect structurally (nested quantifier detection)
|
||||
* and behaviorally at safe scale (step counting on a small custom NFA).
|
||||
*
|
||||
* Scanner detects: Pattern.compile / re.compile / RegExp constructor called with
|
||||
* patterns containing nested quantifiers: (X+)+, (X*)+, (X+)*, (X|Y+)+, etc.
|
||||
*/
|
||||
public class Moad0011Algorithm {
|
||||
|
||||
// ── Structural detection ──────────────────────────────────────────────────
|
||||
|
||||
/**
|
||||
* Returns true if the regex pattern string contains nested quantifiers —
|
||||
* the structural signature of catastrophic backtracking risk.
|
||||
*
|
||||
* Detects patterns of the form (group-with-quantifier) followed by +, *, ?, {n,}.
|
||||
* Examples that match: (a+)+ (a*)+ (a+b*)+ (a+)+? (a+){2,}
|
||||
* Examples that do not: a+ (a+) (a|b)+ [a-z]+
|
||||
*/
|
||||
public static boolean hasCatastrophicStructure(String pattern) {
|
||||
// Regex to detect nested quantifiers:
|
||||
// A group whose contents contain a quantifier, followed by an outer quantifier.
|
||||
// Inner: \([^)]*[+*?][^)]*\) — a paren group containing +, *, or ?
|
||||
// Outer: [+*?] or {\d+,?\d*} following the closing paren
|
||||
return pattern.matches(".*\\([^)]*[+*?][^)]*\\)[+*?{].*");
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns true if the pattern is safe: no nested quantifiers detected.
|
||||
*/
|
||||
public static boolean isSafePattern(String pattern) {
|
||||
return !hasCatastrophicStructure(pattern);
|
||||
}
|
||||
|
||||
// ── Known defective and fixed pattern pairs ───────────────────────────────
|
||||
|
||||
/**
|
||||
* Defective: (a+)+b — nested quantifier.
|
||||
* The outer + allows grouping any prefix of a's; the inner + requires at
|
||||
* least one. On input "aaa...c" (no 'b'), the engine explores all ways to
|
||||
* partition the a-run into groups — O(2^N) attempts.
|
||||
*/
|
||||
public static final String DEFECTIVE_PATTERN_BLEACH = "(a+)+b";
|
||||
|
||||
/**
|
||||
* Fixed: a+b — equivalent semantics, no nesting.
|
||||
* Matches one or more a's followed by b. On "aaa...c" it fails in O(N).
|
||||
*/
|
||||
public static final String FIXED_PATTERN_BLEACH = "a+b";
|
||||
|
||||
/**
|
||||
* Defective: CSS-style gauntlet (simplified from bleach 3.x).
|
||||
* Ambiguous alternation with nested quantifiers across CSS property branches.
|
||||
*/
|
||||
public static final String DEFECTIVE_PATTERN_CSS =
|
||||
"([a-z0-9]+[\\s]*:[\\s]*(([a-z0-9]+[\\s]*)+(,|;|$))+)";
|
||||
|
||||
/**
|
||||
* Fixed: anchored, non-ambiguous CSS value pattern.
|
||||
*/
|
||||
public static final String FIXED_PATTERN_CSS =
|
||||
"^[a-z0-9][a-z0-9\\s]*:[a-z0-9,;\\s]+$";
|
||||
|
||||
// ── Behavioral proof: step-counting NFA for (a+)+b ───────────────────────
|
||||
|
||||
/**
|
||||
* Result of a regex match attempt: whether it matched and how many NFA
|
||||
* steps were taken. Step count proves exponential vs linear growth.
|
||||
*/
|
||||
public static final class Result {
|
||||
public final boolean matched;
|
||||
public final long steps;
|
||||
|
||||
public Result(boolean matched, long steps) {
|
||||
this.matched = matched;
|
||||
this.steps = steps;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Defective NFA: matches (a+)+b with explicit backtracking step counting.
|
||||
*
|
||||
* Implements the nested quantifier pattern by trying all possible
|
||||
* partitions of a leading run of 'a' characters. On non-matching input
|
||||
* (no trailing 'b'), explores O(2^N) states.
|
||||
*
|
||||
* @param input the string to match
|
||||
* @return Result with matched=true iff input matches, steps=NFA steps taken
|
||||
*/
|
||||
public static Result matchDefective(String input) {
|
||||
long[] stepCounter = {0L};
|
||||
boolean matched = defectiveMatch(input, 0, stepCounter);
|
||||
return new Result(matched, stepCounter[0]);
|
||||
}
|
||||
|
||||
/**
|
||||
* Recursive backtracking NFA for (a+)+b.
|
||||
*
|
||||
* State: consumed 'pos' characters of input. Outer quantifier tries at
|
||||
* least one inner (a+) group. Each inner group consumes 1..k a's. The
|
||||
* outer loop repeats until no more a's can be consumed, then checks for 'b'.
|
||||
*/
|
||||
private static boolean defectiveMatch(String input, int pos, long[] steps) {
|
||||
steps[0]++;
|
||||
return outerPlus(input, pos, steps);
|
||||
}
|
||||
|
||||
/** Outer (...)+ — must match at least one inner group. */
|
||||
private static boolean outerPlus(String input, int pos, long[] steps) {
|
||||
// Try consuming one inner (a+) group starting at 'pos', then recurse outer.
|
||||
return innerPlus(input, pos, steps, true);
|
||||
}
|
||||
|
||||
/**
|
||||
* Inner a+ — consume 1..k a's, then try continuing the outer loop or matching 'b'.
|
||||
*
|
||||
* @param first true if this is the first attempt at the outer loop (must match at least once)
|
||||
*/
|
||||
private static boolean innerPlus(String input, int pos, long[] steps, boolean first) {
|
||||
steps[0]++;
|
||||
if (pos >= input.length() || input.charAt(pos) != 'a') {
|
||||
// Cannot consume an 'a' — try ending outer loop and matching 'b'
|
||||
if (!first) {
|
||||
return matchB(input, pos, steps);
|
||||
}
|
||||
return false; // outer + needs at least one inner group
|
||||
}
|
||||
|
||||
// Greedy: try consuming as many a's as possible, then backtrack
|
||||
int start = pos;
|
||||
// Count maximum a's from here
|
||||
int maxPos = pos;
|
||||
while (maxPos < input.length() && input.charAt(maxPos) == 'a') maxPos++;
|
||||
|
||||
// Try splitting: consume (maxPos - start) down to 1 a's in inner group,
|
||||
// then continue outer loop or end
|
||||
for (int endInner = maxPos; endInner > start; endInner--) {
|
||||
steps[0]++;
|
||||
// After consuming [start..endInner) a's, try continuing outer loop
|
||||
if (innerPlus(input, endInner, steps, false)) return true;
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
/** Match literal 'b' at position pos. */
|
||||
private static boolean matchB(String input, int pos, long[] steps) {
|
||||
steps[0]++;
|
||||
return pos < input.length() && input.charAt(pos) == 'b' && pos + 1 == input.length();
|
||||
}
|
||||
|
||||
/**
|
||||
* Fixed NFA: matches a+b in O(N) steps — no backtracking, no nested quantifiers.
|
||||
*
|
||||
* @param input the string to match
|
||||
* @return Result with matched=true iff input matches a+b exactly, steps=O(N)
|
||||
*/
|
||||
public static Result matchFixed(String input) {
|
||||
long steps = 0;
|
||||
int pos = 0;
|
||||
|
||||
// Must have at least one 'a'
|
||||
if (pos >= input.length() || input.charAt(pos) != 'a') {
|
||||
return new Result(false, ++steps);
|
||||
}
|
||||
|
||||
// Consume all leading a's — O(N) scan, single pass, no backtracking
|
||||
while (pos < input.length() && input.charAt(pos) == 'a') {
|
||||
pos++;
|
||||
steps++;
|
||||
}
|
||||
|
||||
// Must end with exactly one 'b' and nothing after
|
||||
steps++;
|
||||
boolean matched = (pos < input.length() && input.charAt(pos) == 'b'
|
||||
&& pos + 1 == input.length());
|
||||
return new Result(matched, steps);
|
||||
}
|
||||
|
||||
/**
|
||||
* Build an adversarial non-matching input: N a's followed by 'c'.
|
||||
* Defective engine explores O(2^N) states; fixed engine scans O(N) and stops.
|
||||
*/
|
||||
public static String adversarialInput(int aCount) {
|
||||
return "a".repeat(aCount) + "c";
|
||||
}
|
||||
|
||||
/**
|
||||
* Build a matching input: N a's followed by 'b'.
|
||||
* Both engines return matched=true; step counts differ in constant factor.
|
||||
*/
|
||||
public static String matchingInput(int aCount) {
|
||||
return "a".repeat(aCount) + "b";
|
||||
}
|
||||
}
|
||||
155
tests/unit/Moad0002UnitTest.java
Normal file
155
tests/unit/Moad0002UnitTest.java
Normal file
|
|
@ -0,0 +1,155 @@
|
|||
package unit;
|
||||
|
||||
import support.Moad0002Algorithm;
|
||||
import support.Moad0002Algorithm.Context;
|
||||
import support.Moad0002Algorithm.DefectiveAudioSystem;
|
||||
import support.Moad0002Algorithm.DefectiveDisplaySystem;
|
||||
import support.Moad0002Algorithm.FixedAudioSystem;
|
||||
import support.Moad0002Algorithm.FixedDisplaySystem;
|
||||
|
||||
/**
|
||||
* Unit tests for MOAD-0002: An Intertangled Defect.
|
||||
*
|
||||
* Proves from first principles:
|
||||
* 1. Defective: AudioSystem.setLocale() mutates state seen by DisplaySystem —
|
||||
* cross-subsystem interference through shared global state.
|
||||
* 2. Defective: two independent "contexts" sharing GLOBAL cannot coexist —
|
||||
* the second write tramples the first silently.
|
||||
* 3. Fixed: two Context objects carry independent values simultaneously.
|
||||
* 4. Fixed: AudioSystem and DisplaySystem read from separate Context objects
|
||||
* without interfering with each other.
|
||||
*
|
||||
* No build tool required. Compile and run:
|
||||
*
|
||||
* cd tests
|
||||
* java -m jdk.compiler/com.sun.tools.javac.Main -cp . \
|
||||
* support/Moad0002Algorithm.java unit/Moad0002UnitTest.java
|
||||
* java -cp . unit.Moad0002UnitTest
|
||||
*/
|
||||
public class Moad0002UnitTest {
|
||||
|
||||
private static int passed = 0;
|
||||
private static int failed = 0;
|
||||
|
||||
public static void main(String[] args) {
|
||||
System.out.println("=== Moad0002UnitTest (An Intertangled Defect) ===\n");
|
||||
|
||||
System.out.println("-- Correctness: subsystems read values correctly --");
|
||||
testDefectiveBasicRead();
|
||||
testFixedBasicRead();
|
||||
|
||||
System.out.println("\n-- Defect: shared global state causes cross-subsystem interference --");
|
||||
testDefectiveAudioLocaleLeaksToDisplay();
|
||||
testDefectiveTwoContextsTrample();
|
||||
|
||||
System.out.println("\n-- Fix: isolated Context objects prevent interference --");
|
||||
testFixedTwoContextsCoexist();
|
||||
testFixedSubsystemsDoNotInterfere();
|
||||
|
||||
System.out.printf("\n%d passed, %d failed%n", passed, failed);
|
||||
if (failed > 0) System.exit(1);
|
||||
}
|
||||
|
||||
// ── Correctness ───────────────────────────────────────────────────────────
|
||||
|
||||
static void testDefectiveBasicRead() {
|
||||
Moad0002Algorithm.resetGlobal();
|
||||
DefectiveAudioSystem audio = new DefectiveAudioSystem();
|
||||
audio.setVolume(80);
|
||||
assertEqual("defective audio: volume reads back correctly", 80, audio.getVolume());
|
||||
}
|
||||
|
||||
static void testFixedBasicRead() {
|
||||
Context ctx = new Context(70, 200, "fr");
|
||||
FixedAudioSystem audio = new FixedAudioSystem(ctx);
|
||||
FixedDisplaySystem display = new FixedDisplaySystem(ctx);
|
||||
assertEqual("fixed audio: volume", 70, audio.getVolume());
|
||||
assertEqual("fixed display: brightness", 200, display.getBrightness());
|
||||
assertEqual("fixed audio: locale", "fr", audio.getLocale());
|
||||
assertEqual("fixed display: locale", "fr", display.getLocale());
|
||||
}
|
||||
|
||||
// ── Defect ────────────────────────────────────────────────────────────────
|
||||
|
||||
static void testDefectiveAudioLocaleLeaksToDisplay() {
|
||||
Moad0002Algorithm.resetGlobal();
|
||||
DefectiveAudioSystem audio = new DefectiveAudioSystem();
|
||||
DefectiveDisplaySystem display = new DefectiveDisplaySystem();
|
||||
|
||||
// AudioSystem configures locale — conceptually an audio concern (TTS language)
|
||||
audio.setLocale("ja");
|
||||
|
||||
// DEFECT: DisplaySystem reads the same global — sees audio's mutation
|
||||
// This is the intertangle: two subsystems that should be independent
|
||||
// are coupled through a shared mutable state object.
|
||||
String displayLocale = display.getLocale();
|
||||
assertEqual("defective: audio locale write leaks into display", "ja", displayLocale);
|
||||
}
|
||||
|
||||
static void testDefectiveTwoContextsTrample() {
|
||||
Moad0002Algorithm.resetGlobal();
|
||||
// Two independent "sessions" each configure their own audio subsystem.
|
||||
DefectiveAudioSystem session1 = new DefectiveAudioSystem();
|
||||
DefectiveAudioSystem session2 = new DefectiveAudioSystem();
|
||||
|
||||
session1.setVolume(30); // session 1 sets volume to 30
|
||||
session2.setVolume(90); // session 2 sets volume to 90 — TRAMPLES session 1
|
||||
|
||||
// DEFECT: session 1 now sees 90, not 30 — its configuration was silently destroyed.
|
||||
// Two contexts cannot coexist when they share a global state object.
|
||||
int session1Volume = session1.getVolume();
|
||||
assertEqual("defective: session2 write tramples session1 volume", 90, session1Volume);
|
||||
}
|
||||
|
||||
// ── Fix ───────────────────────────────────────────────────────────────────
|
||||
|
||||
static void testFixedTwoContextsCoexist() {
|
||||
Context ctx1 = new Context(30, 150, "en");
|
||||
Context ctx2 = new Context(90, 200, "ja");
|
||||
|
||||
FixedAudioSystem s1 = new FixedAudioSystem(ctx1);
|
||||
FixedAudioSystem s2 = new FixedAudioSystem(ctx2);
|
||||
|
||||
// FIX: both values coexist — ctx1 and ctx2 are independent objects
|
||||
assertEqual("fixed: session1 volume preserved after session2 created", 30, s1.getVolume());
|
||||
assertEqual("fixed: session2 volume independent of session1", 90, s2.getVolume());
|
||||
assertEqual("fixed: session1 locale preserved", "en", s1.getLocale());
|
||||
assertEqual("fixed: session2 locale independent", "ja", s2.getLocale());
|
||||
}
|
||||
|
||||
static void testFixedSubsystemsDoNotInterfere() {
|
||||
Context audioCtx = new Context(75, 0, "de");
|
||||
Context displayCtx = new Context(0, 180, "fr");
|
||||
|
||||
FixedAudioSystem audio = new FixedAudioSystem(audioCtx);
|
||||
FixedDisplaySystem display = new FixedDisplaySystem(displayCtx);
|
||||
|
||||
// FIX: each subsystem reads only its own context — no cross-contamination
|
||||
assertEqual("fixed: audio locale unaffected by display context", "de", audio.getLocale());
|
||||
assertEqual("fixed: display locale unaffected by audio context", "fr", display.getLocale());
|
||||
assertEqual("fixed: display brightness from own context", 180, display.getBrightness());
|
||||
assertEqual("fixed: audio volume from own context", 75, audio.getVolume());
|
||||
}
|
||||
|
||||
// ── Helpers ───────────────────────────────────────────────────────────────
|
||||
|
||||
static void assertEqual(String label, int expected, int actual) {
|
||||
if (expected == actual) {
|
||||
System.out.printf(" PASS: %s%n", label);
|
||||
passed++;
|
||||
} else {
|
||||
System.out.printf(" FAIL: %s — expected %d, got %d%n", label, expected, actual);
|
||||
failed++;
|
||||
}
|
||||
}
|
||||
|
||||
static void assertEqual(String label, String expected, String actual) {
|
||||
if (expected == null ? actual == null : expected.equals(actual)) {
|
||||
System.out.printf(" PASS: %s%n", label);
|
||||
passed++;
|
||||
} else {
|
||||
System.out.printf(" FAIL: %s — expected '%s', got '%s'%n", label, expected, actual);
|
||||
failed++;
|
||||
}
|
||||
}
|
||||
}
|
||||
142
tests/unit/Moad0003UnitTest.java
Normal file
142
tests/unit/Moad0003UnitTest.java
Normal file
|
|
@ -0,0 +1,142 @@
|
|||
package unit;
|
||||
|
||||
import support.Moad0003Algorithm;
|
||||
|
||||
/**
|
||||
* Unit tests for MOAD-0003: A Leaked Context.
|
||||
*
|
||||
* Proves from first principles:
|
||||
* 1. Defective: ThreadLocal set in request R1 remains accessible after R1
|
||||
* completes — the next request R2 (which never calls set()) inherits R1's
|
||||
* identity. This is the thread-pool leak: the thread is reused, but the
|
||||
* ThreadLocal is not cleared between units of work.
|
||||
* 2. Fixed: ThreadLocal.remove() in a finally block ensures R2 sees null —
|
||||
* each request starts from a clean slate.
|
||||
* 3. Both correctly return the identity when explicitly set.
|
||||
* 4. Partial-set scenario: R2 sets its own identity and removes it correctly
|
||||
* even when R1 failed to clean up in the defective variant.
|
||||
*
|
||||
* No build tool required. Compile and run:
|
||||
*
|
||||
* cd tests
|
||||
* java -m jdk.compiler/com.sun.tools.javac.Main -cp . \
|
||||
* support/Moad0003Algorithm.java unit/Moad0003UnitTest.java
|
||||
* java -cp . unit.Moad0003UnitTest
|
||||
*/
|
||||
public class Moad0003UnitTest {
|
||||
|
||||
private static int passed = 0;
|
||||
private static int failed = 0;
|
||||
|
||||
public static void main(String[] args) {
|
||||
System.out.println("=== Moad0003UnitTest (A Leaked Context) ===\n");
|
||||
|
||||
System.out.println("-- Correctness: identity returned correctly when set --");
|
||||
testDefectiveReturnsSetIdentity();
|
||||
testFixedReturnsSetIdentity();
|
||||
|
||||
System.out.println("\n-- Defect: stale identity leaks to anonymous next request --");
|
||||
testDefectiveLeaksToAnonymousRequest();
|
||||
testDefectiveLeaksAcrossMultipleRequests();
|
||||
|
||||
System.out.println("\n-- Fix: ThreadLocal.remove() cleans up before next request --");
|
||||
testFixedAnonymousRequestSeesNull();
|
||||
testFixedMultipleRequestsClean();
|
||||
|
||||
System.out.printf("\n%d passed, %d failed%n", passed, failed);
|
||||
if (failed > 0) System.exit(1);
|
||||
}
|
||||
|
||||
// ── Correctness ───────────────────────────────────────────────────────────
|
||||
|
||||
static void testDefectiveReturnsSetIdentity() {
|
||||
Moad0003Algorithm.reset();
|
||||
String result = Moad0003Algorithm.handleDefective("alice");
|
||||
assertEqual("defective: returns set identity 'alice'", "alice", result);
|
||||
Moad0003Algorithm.reset(); // clean up after defective handler
|
||||
}
|
||||
|
||||
static void testFixedReturnsSetIdentity() {
|
||||
Moad0003Algorithm.reset();
|
||||
String result = Moad0003Algorithm.handleFixed("bob");
|
||||
assertEqual("fixed: returns set identity 'bob'", "bob", result);
|
||||
// handleFixed removes ThreadLocal automatically
|
||||
}
|
||||
|
||||
// ── Defect ────────────────────────────────────────────────────────────────
|
||||
|
||||
static void testDefectiveLeaksToAnonymousRequest() {
|
||||
Moad0003Algorithm.reset();
|
||||
|
||||
// Request R1: authenticated as "alice"
|
||||
Moad0003Algorithm.handleDefective("alice");
|
||||
// R1 completes but DOES NOT call remove() — ThreadLocal still holds "alice"
|
||||
|
||||
// Request R2: anonymous — never calls set()
|
||||
// Simulates the same pooled thread handling the next request.
|
||||
String leaked = Moad0003Algorithm.handleDefectiveAnonymous();
|
||||
|
||||
// DEFECT: R2 sees "alice" even though it never set any identity.
|
||||
// A CSRF-style confusion: R2 could perform privileged operations as "alice".
|
||||
assertEqual("defective: anonymous request leaks alice's identity", "alice", leaked);
|
||||
|
||||
Moad0003Algorithm.reset();
|
||||
}
|
||||
|
||||
static void testDefectiveLeaksAcrossMultipleRequests() {
|
||||
Moad0003Algorithm.reset();
|
||||
|
||||
// R1 sets identity, completes without cleanup
|
||||
Moad0003Algorithm.handleDefective("carol");
|
||||
// R2 anonymous — sees leaked "carol"
|
||||
String leak1 = Moad0003Algorithm.handleDefectiveAnonymous();
|
||||
// R3 anonymous — still sees "carol" (ThreadLocal persists until explicitly removed)
|
||||
String leak2 = Moad0003Algorithm.handleDefectiveAnonymous();
|
||||
|
||||
assertEqual("defective: first anonymous request leaks 'carol'", "carol", leak1);
|
||||
assertEqual("defective: second anonymous request still leaks 'carol'", "carol", leak2);
|
||||
|
||||
Moad0003Algorithm.reset();
|
||||
}
|
||||
|
||||
// ── Fix ───────────────────────────────────────────────────────────────────
|
||||
|
||||
static void testFixedAnonymousRequestSeesNull() {
|
||||
Moad0003Algorithm.reset();
|
||||
|
||||
// R1: authenticated — handleFixed removes ThreadLocal in finally
|
||||
Moad0003Algorithm.handleFixed("alice");
|
||||
// ThreadLocal is now null — handleFixed called remove() before returning
|
||||
|
||||
// R2: anonymous — sees null (clean slate)
|
||||
String identity = Moad0003Algorithm.handleFixedAnonymous();
|
||||
assertEqual("fixed: anonymous request after fixed handler sees null", null, identity);
|
||||
}
|
||||
|
||||
static void testFixedMultipleRequestsClean() {
|
||||
Moad0003Algorithm.reset();
|
||||
|
||||
// Simulate 3 requests on the same pooled thread, alternating auth/anon
|
||||
String r1 = Moad0003Algorithm.handleFixed("alice"); // auth
|
||||
String r2 = Moad0003Algorithm.handleFixedAnonymous(); // anon — must be null
|
||||
String r3 = Moad0003Algorithm.handleFixed("bob"); // auth
|
||||
String r4 = Moad0003Algorithm.handleFixedAnonymous(); // anon — must be null
|
||||
|
||||
assertEqual("fixed: R1 returns 'alice'", "alice", r1);
|
||||
assertEqual("fixed: R2 anonymous sees null (not alice)", null, r2);
|
||||
assertEqual("fixed: R3 returns 'bob'", "bob", r3);
|
||||
assertEqual("fixed: R4 anonymous sees null (not bob)", null, r4);
|
||||
}
|
||||
|
||||
// ── Helpers ───────────────────────────────────────────────────────────────
|
||||
|
||||
static void assertEqual(String label, String expected, String actual) {
|
||||
if (expected == null ? actual == null : expected.equals(actual)) {
|
||||
System.out.printf(" PASS: %s%n", label);
|
||||
passed++;
|
||||
} else {
|
||||
System.out.printf(" FAIL: %s — expected '%s', got '%s'%n", label, expected, actual);
|
||||
failed++;
|
||||
}
|
||||
}
|
||||
}
|
||||
174
tests/unit/Moad0004UnitTest.java
Normal file
174
tests/unit/Moad0004UnitTest.java
Normal file
|
|
@ -0,0 +1,174 @@
|
|||
package unit;
|
||||
|
||||
import support.Moad0004Algorithm;
|
||||
import support.Moad0004Algorithm.Result;
|
||||
|
||||
import java.util.Map;
|
||||
|
||||
/**
|
||||
* Unit tests for MOAD-0004: A Logged Secret.
|
||||
*
|
||||
* Proves from first principles:
|
||||
* 1. Defective: Authorization and Cookie headers appear verbatim in the log line —
|
||||
* bearer token and session cookie exposed in cleartext.
|
||||
* 2. Defective: leak count equals the number of credential headers present.
|
||||
* 3. Fixed: credential header values are replaced with [REDACTED] —
|
||||
* log line contains header names (for debugging) but not values.
|
||||
* 4. Fixed: non-credential headers (Host, Content-Type) pass through unchanged.
|
||||
* 5. Both handle empty header maps without error.
|
||||
*
|
||||
* No build tool required. Compile and run:
|
||||
*
|
||||
* cd tests
|
||||
* java -m jdk.compiler/com.sun.tools.javac.Main -cp . \
|
||||
* support/Moad0004Algorithm.java unit/Moad0004UnitTest.java
|
||||
* java -cp . unit.Moad0004UnitTest
|
||||
*/
|
||||
public class Moad0004UnitTest {
|
||||
|
||||
private static int passed = 0;
|
||||
private static int failed = 0;
|
||||
|
||||
public static void main(String[] args) {
|
||||
System.out.println("=== Moad0004UnitTest (A Logged Secret) ===\n");
|
||||
|
||||
System.out.println("-- Correctness: both handle headers without throwing --");
|
||||
testBothHandleEmpty();
|
||||
|
||||
System.out.println("\n-- Defect: credential headers appear in cleartext log --");
|
||||
testDefectiveAuthorizationLeaks();
|
||||
testDefectiveCookieLeaks();
|
||||
testDefectiveCountsAllCredentialHeaders();
|
||||
testDefectiveNonCredentialHeadersPresent();
|
||||
|
||||
System.out.println("\n-- Fix: credential headers redacted, non-credential headers intact --");
|
||||
testFixedAuthorizationRedacted();
|
||||
testFixedCookieRedacted();
|
||||
testFixedNonCredentialHeadersPassThrough();
|
||||
testFixedZeroLeakCount();
|
||||
|
||||
System.out.printf("\n%d passed, %d failed%n", passed, failed);
|
||||
if (failed > 0) System.exit(1);
|
||||
}
|
||||
|
||||
// ── Correctness ───────────────────────────────────────────────────────────
|
||||
|
||||
static void testBothHandleEmpty() {
|
||||
Map<String, String> empty = Map.of();
|
||||
Result def = Moad0004Algorithm.logDefective(empty);
|
||||
Result fix = Moad0004Algorithm.logFixed(empty);
|
||||
assertEqual("defective: empty headers, zero leaks", 0, def.credentialLeakCount);
|
||||
assertEqual("fixed: empty headers, zero leaks", 0, fix.credentialLeakCount);
|
||||
}
|
||||
|
||||
// ── Defect ────────────────────────────────────────────────────────────────
|
||||
|
||||
static void testDefectiveAuthorizationLeaks() {
|
||||
Map<String, String> headers = Moad0004Algorithm.sampleHeaders();
|
||||
Result result = Moad0004Algorithm.logDefective(headers);
|
||||
|
||||
// DEFECT: bearer token appears in the log line verbatim
|
||||
assertContains("defective: Authorization value in log (bearer token exposed)",
|
||||
result.logLine, "eyJhbGciOiJSUzI1NiJ9.secret.token");
|
||||
}
|
||||
|
||||
static void testDefectiveCookieLeaks() {
|
||||
Map<String, String> headers = Moad0004Algorithm.sampleHeaders();
|
||||
Result result = Moad0004Algorithm.logDefective(headers);
|
||||
|
||||
// DEFECT: session cookie and CSRF token appear in the log line
|
||||
assertContains("defective: Cookie value in log (session cookie exposed)",
|
||||
result.logLine, "session=abc123def456");
|
||||
}
|
||||
|
||||
static void testDefectiveCountsAllCredentialHeaders() {
|
||||
Map<String, String> headers = Moad0004Algorithm.sampleHeaders();
|
||||
Result result = Moad0004Algorithm.logDefective(headers);
|
||||
|
||||
// sampleHeaders() contains: Authorization, Cookie, X-Api-Key = 3 credential headers
|
||||
assertEqual("defective: counts 3 credential header leaks", 3, result.credentialLeakCount);
|
||||
}
|
||||
|
||||
static void testDefectiveNonCredentialHeadersPresent() {
|
||||
Map<String, String> headers = Moad0004Algorithm.sampleHeaders();
|
||||
Result result = Moad0004Algorithm.logDefective(headers);
|
||||
|
||||
// Non-credential headers should appear (correct behavior for logging)
|
||||
assertContains("defective: Host header present in log", result.logLine, "api.example.com");
|
||||
assertContains("defective: X-Request-Id present in log", result.logLine, "req-7f3a9c");
|
||||
}
|
||||
|
||||
// ── Fix ───────────────────────────────────────────────────────────────────
|
||||
|
||||
static void testFixedAuthorizationRedacted() {
|
||||
Map<String, String> headers = Moad0004Algorithm.sampleHeaders();
|
||||
Result result = Moad0004Algorithm.logFixed(headers);
|
||||
|
||||
// FIX: bearer token must NOT appear in the log line
|
||||
assertNotContains("fixed: bearer token NOT in log",
|
||||
result.logLine, "eyJhbGciOiJSUzI1NiJ9.secret.token");
|
||||
|
||||
// The header name should still appear (useful for debugging)
|
||||
assertContains("fixed: Authorization header name present (redacted value)",
|
||||
result.logLine, "Authorization");
|
||||
}
|
||||
|
||||
static void testFixedCookieRedacted() {
|
||||
Map<String, String> headers = Moad0004Algorithm.sampleHeaders();
|
||||
Result result = Moad0004Algorithm.logFixed(headers);
|
||||
|
||||
// FIX: session cookie must NOT appear
|
||||
assertNotContains("fixed: session cookie NOT in log", result.logLine, "session=abc123def456");
|
||||
|
||||
// The header name should still appear
|
||||
assertContains("fixed: Cookie header name present", result.logLine, "Cookie");
|
||||
}
|
||||
|
||||
static void testFixedNonCredentialHeadersPassThrough() {
|
||||
Map<String, String> headers = Moad0004Algorithm.sampleHeaders();
|
||||
Result result = Moad0004Algorithm.logFixed(headers);
|
||||
|
||||
// Non-credential headers must pass through unchanged
|
||||
assertContains("fixed: Host value passes through", result.logLine, "api.example.com");
|
||||
assertContains("fixed: X-Request-Id passes through", result.logLine, "req-7f3a9c");
|
||||
assertContains("fixed: Content-Type passes through", result.logLine, "application/json");
|
||||
}
|
||||
|
||||
static void testFixedZeroLeakCount() {
|
||||
Map<String, String> headers = Moad0004Algorithm.sampleHeaders();
|
||||
Result result = Moad0004Algorithm.logFixed(headers);
|
||||
assertEqual("fixed: zero credential leaks", 0, result.credentialLeakCount);
|
||||
}
|
||||
|
||||
// ── Helpers ───────────────────────────────────────────────────────────────
|
||||
|
||||
static void assertEqual(String label, int expected, int actual) {
|
||||
if (expected == actual) {
|
||||
System.out.printf(" PASS: %s%n", label);
|
||||
passed++;
|
||||
} else {
|
||||
System.out.printf(" FAIL: %s — expected %d, got %d%n", label, expected, actual);
|
||||
failed++;
|
||||
}
|
||||
}
|
||||
|
||||
static void assertContains(String label, String haystack, String needle) {
|
||||
if (haystack.contains(needle)) {
|
||||
System.out.printf(" PASS: %s%n", label);
|
||||
passed++;
|
||||
} else {
|
||||
System.out.printf(" FAIL: %s — '%s' not found in: %s%n", label, needle, haystack);
|
||||
failed++;
|
||||
}
|
||||
}
|
||||
|
||||
static void assertNotContains(String label, String haystack, String needle) {
|
||||
if (!haystack.contains(needle)) {
|
||||
System.out.printf(" PASS: %s%n", label);
|
||||
passed++;
|
||||
} else {
|
||||
System.out.printf(" FAIL: %s — '%s' should NOT be in: %s%n", label, needle, haystack);
|
||||
failed++;
|
||||
}
|
||||
}
|
||||
}
|
||||
183
tests/unit/Moad0005UnitTest.java
Normal file
183
tests/unit/Moad0005UnitTest.java
Normal file
|
|
@ -0,0 +1,183 @@
|
|||
package unit;
|
||||
|
||||
import support.Moad0005Algorithm;
|
||||
import support.Moad0005Algorithm.DefectiveCache;
|
||||
import support.Moad0005Algorithm.FixedCache;
|
||||
|
||||
/**
|
||||
* Unit tests for MOAD-0005: CWE-362 — A Thundering Herd.
|
||||
*
|
||||
* Proves from first principles:
|
||||
* 1. Defective: N callers all seeing a null cache entry all invoke
|
||||
* expensiveCompute() — N computes instead of 1. This is the herd.
|
||||
* 2. Fixed: ConcurrentHashMap.computeIfAbsent() ensures exactly 1 compute
|
||||
* regardless of how many callers miss simultaneously.
|
||||
* 3. Both return the same (correct) value for any key.
|
||||
* 4. Sequential access on a warm cache: both call compute exactly once.
|
||||
*
|
||||
* The single-threaded simulation models the race window: all callers read
|
||||
* before any caller's put() completes. Integration tests use real threads.
|
||||
*
|
||||
* No build tool required. Compile and run:
|
||||
*
|
||||
* cd tests
|
||||
* java -m jdk.compiler/com.sun.tools.javac.Main -cp . \
|
||||
* support/Moad0005Algorithm.java unit/Moad0005UnitTest.java
|
||||
* java -cp . unit.Moad0005UnitTest
|
||||
*/
|
||||
public class Moad0005UnitTest {
|
||||
|
||||
private static int passed = 0;
|
||||
private static int failed = 0;
|
||||
|
||||
public static void main(String[] args) {
|
||||
System.out.println("=== Moad0005UnitTest (A Thundering Herd) ===\n");
|
||||
|
||||
System.out.println("-- Correctness: both caches return correct value --");
|
||||
testDefectiveReturnsCorrectValue();
|
||||
testFixedReturnsCorrectValue();
|
||||
testBothReturnSameValue();
|
||||
|
||||
System.out.println("\n-- Defect: N concurrent misses produce N computes --");
|
||||
testDefectiveConcurrentMissN10();
|
||||
testDefectiveConcurrentMissN50();
|
||||
testDefectiveComputeCountScalesWithCallers();
|
||||
|
||||
System.out.println("\n-- Fix: N concurrent misses produce exactly 1 compute --");
|
||||
testFixedConcurrentMissN10();
|
||||
testFixedConcurrentMissN50();
|
||||
testFixedComputeCountAlwaysOne();
|
||||
|
||||
System.out.println("\n-- Warm cache: both compute exactly once sequentially --");
|
||||
testDefectiveWarmCacheNoRecompute();
|
||||
testFixedWarmCacheNoRecompute();
|
||||
|
||||
System.out.printf("\n%d passed, %d failed%n", passed, failed);
|
||||
if (failed > 0) System.exit(1);
|
||||
}
|
||||
|
||||
// ── Correctness ───────────────────────────────────────────────────────────
|
||||
|
||||
static void testDefectiveReturnsCorrectValue() {
|
||||
Moad0005Algorithm.resetCounter();
|
||||
DefectiveCache cache = new DefectiveCache();
|
||||
String val = cache.getOrCompute("foo");
|
||||
assertEqual("defective: returns 'value-for-foo'", "value-for-foo", val);
|
||||
}
|
||||
|
||||
static void testFixedReturnsCorrectValue() {
|
||||
Moad0005Algorithm.resetCounter();
|
||||
FixedCache cache = new FixedCache();
|
||||
String val = cache.getOrCompute("foo");
|
||||
assertEqual("fixed: returns 'value-for-foo'", "value-for-foo", val);
|
||||
}
|
||||
|
||||
static void testBothReturnSameValue() {
|
||||
Moad0005Algorithm.resetCounter();
|
||||
DefectiveCache def = new DefectiveCache();
|
||||
FixedCache fix = new FixedCache();
|
||||
String dVal = def.getOrCompute("bar");
|
||||
Moad0005Algorithm.resetCounter();
|
||||
String fVal = fix.getOrCompute("bar");
|
||||
assertEqual("both: return same value for 'bar'", dVal, fVal);
|
||||
}
|
||||
|
||||
// ── Defect ────────────────────────────────────────────────────────────────
|
||||
|
||||
static void testDefectiveConcurrentMissN10() {
|
||||
int computes = Moad0005Algorithm.simulateDefectiveConcurrentMiss(10, "key");
|
||||
// DEFECT: all 10 callers see null simultaneously → 10 computes
|
||||
assertEqual("defective: 10 concurrent misses cause 10 computes (herd)", 10, computes);
|
||||
}
|
||||
|
||||
static void testDefectiveConcurrentMissN50() {
|
||||
int computes = Moad0005Algorithm.simulateDefectiveConcurrentMiss(50, "key");
|
||||
// DEFECT: 50 concurrent misses → 50 computes
|
||||
assertEqual("defective: 50 concurrent misses cause 50 computes (herd)", 50, computes);
|
||||
}
|
||||
|
||||
static void testDefectiveComputeCountScalesWithCallers() {
|
||||
int c10 = Moad0005Algorithm.simulateDefectiveConcurrentMiss(10, "key");
|
||||
int c20 = Moad0005Algorithm.simulateDefectiveConcurrentMiss(20, "key");
|
||||
// DEFECT: compute count scales linearly with caller count (N wasted computes)
|
||||
assertTrue("defective: doubling callers doubles computes",
|
||||
c20 == 2 * c10, "c10=" + c10 + " c20=" + c20);
|
||||
}
|
||||
|
||||
// ── Fix ───────────────────────────────────────────────────────────────────
|
||||
|
||||
static void testFixedConcurrentMissN10() {
|
||||
int computes = Moad0005Algorithm.simulateFixedConcurrentMiss(10, "key");
|
||||
// FIX: computeIfAbsent — exactly 1 compute regardless of caller count
|
||||
assertEqual("fixed: 10 concurrent misses cause exactly 1 compute", 1, computes);
|
||||
}
|
||||
|
||||
static void testFixedConcurrentMissN50() {
|
||||
int computes = Moad0005Algorithm.simulateFixedConcurrentMiss(50, "key");
|
||||
assertEqual("fixed: 50 concurrent misses cause exactly 1 compute", 1, computes);
|
||||
}
|
||||
|
||||
static void testFixedComputeCountAlwaysOne() {
|
||||
int c10 = Moad0005Algorithm.simulateFixedConcurrentMiss(10, "key");
|
||||
int c100 = Moad0005Algorithm.simulateFixedConcurrentMiss(100, "key");
|
||||
// FIX: compute count does not scale — always 1
|
||||
assertEqual("fixed: 10 callers — 1 compute", 1, c10);
|
||||
assertEqual("fixed: 100 callers — 1 compute", 1, c100);
|
||||
}
|
||||
|
||||
// ── Warm cache ────────────────────────────────────────────────────────────
|
||||
|
||||
static void testDefectiveWarmCacheNoRecompute() {
|
||||
Moad0005Algorithm.resetCounter();
|
||||
DefectiveCache cache = new DefectiveCache();
|
||||
cache.getOrCompute("warm"); // cold miss — 1 compute
|
||||
int afterFirst = Moad0005Algorithm.COMPUTE_CALLS.get();
|
||||
cache.getOrCompute("warm"); // warm hit — 0 compute
|
||||
int afterSecond = Moad0005Algorithm.COMPUTE_CALLS.get();
|
||||
assertEqual("defective: first call computes once", 1, afterFirst);
|
||||
assertEqual("defective: second sequential call hits cache", 1, afterSecond);
|
||||
}
|
||||
|
||||
static void testFixedWarmCacheNoRecompute() {
|
||||
Moad0005Algorithm.resetCounter();
|
||||
FixedCache cache = new FixedCache();
|
||||
cache.getOrCompute("warm"); // cold miss — 1 compute
|
||||
int afterFirst = Moad0005Algorithm.COMPUTE_CALLS.get();
|
||||
cache.getOrCompute("warm"); // warm hit — 0 compute
|
||||
int afterSecond = Moad0005Algorithm.COMPUTE_CALLS.get();
|
||||
assertEqual("fixed: first call computes once", 1, afterFirst);
|
||||
assertEqual("fixed: second sequential call hits cache", 1, afterSecond);
|
||||
}
|
||||
|
||||
// ── Helpers ───────────────────────────────────────────────────────────────
|
||||
|
||||
static void assertEqual(String label, int expected, int actual) {
|
||||
if (expected == actual) {
|
||||
System.out.printf(" PASS: %s%n", label);
|
||||
passed++;
|
||||
} else {
|
||||
System.out.printf(" FAIL: %s — expected %d, got %d%n", label, expected, actual);
|
||||
failed++;
|
||||
}
|
||||
}
|
||||
|
||||
static void assertEqual(String label, String expected, String actual) {
|
||||
if (expected == null ? actual == null : expected.equals(actual)) {
|
||||
System.out.printf(" PASS: %s%n", label);
|
||||
passed++;
|
||||
} else {
|
||||
System.out.printf(" FAIL: %s — expected '%s', got '%s'%n", label, expected, actual);
|
||||
failed++;
|
||||
}
|
||||
}
|
||||
|
||||
static void assertTrue(String label, boolean condition, String detail) {
|
||||
if (condition) {
|
||||
System.out.printf(" PASS: %s%n", label);
|
||||
passed++;
|
||||
} else {
|
||||
System.out.printf(" FAIL: %s — %s%n", label, detail);
|
||||
failed++;
|
||||
}
|
||||
}
|
||||
}
|
||||
238
tests/unit/Moad0006UnitTest.java
Normal file
238
tests/unit/Moad0006UnitTest.java
Normal file
|
|
@ -0,0 +1,238 @@
|
|||
package unit;
|
||||
|
||||
import support.Moad0006Algorithm;
|
||||
import support.Moad0006Algorithm.DefectiveCredentialStore;
|
||||
import support.Moad0006Algorithm.FixedCredentialStore;
|
||||
|
||||
/**
|
||||
* Unit tests for MOAD-0006: CWE-257 — A Glass Safe.
|
||||
*
|
||||
* Proves from first principles:
|
||||
* 1. Defective: Base64 encoding is reversible — stored credential decodes
|
||||
* to the original password. An attacker with DB read access extracts
|
||||
* every password in plaintext.
|
||||
* 2. Defective: stored value is deterministic — same password always produces
|
||||
* same encoded string, enabling rainbow table attacks.
|
||||
* 3. Fixed: SHA-256 + salt is one-way — the stored hash cannot be decoded
|
||||
* to recover the original password.
|
||||
* 4. Fixed: salt randomization — same password stored twice produces
|
||||
* different hash values (defeats rainbow tables).
|
||||
* 5. Both correctly verify a correct password and reject an incorrect one.
|
||||
*
|
||||
* No build tool required. Compile and run:
|
||||
*
|
||||
* cd tests
|
||||
* java -m jdk.compiler/com.sun.tools.javac.Main -cp . \
|
||||
* support/Moad0006Algorithm.java unit/Moad0006UnitTest.java
|
||||
* java -cp . unit.Moad0006UnitTest
|
||||
*/
|
||||
public class Moad0006UnitTest {
|
||||
|
||||
private static int passed = 0;
|
||||
private static int failed = 0;
|
||||
|
||||
public static void main(String[] args) {
|
||||
System.out.println("=== Moad0006UnitTest (A Glass Safe) ===\n");
|
||||
|
||||
System.out.println("-- Correctness: verification works for both --");
|
||||
testDefectiveVerifyCorrect();
|
||||
testDefectiveRejectWrong();
|
||||
testFixedVerifyCorrect();
|
||||
testFixedRejectWrong();
|
||||
|
||||
System.out.println("\n-- Defect: stored value is reversible (glass safe opens) --");
|
||||
testDefectivePasswordExtractable();
|
||||
testDefectiveDeterministicStorage();
|
||||
testDefectiveMultipleUsersExtractable();
|
||||
|
||||
System.out.println("\n-- Fix: stored value is one-way (hash cannot be reversed) --");
|
||||
testFixedPasswordNotExtractable();
|
||||
testFixedSaltRandomization();
|
||||
testFixedHashNotEqualToPassword();
|
||||
|
||||
System.out.printf("\n%d passed, %d failed%n", passed, failed);
|
||||
if (failed > 0) System.exit(1);
|
||||
}
|
||||
|
||||
// ── Correctness ───────────────────────────────────────────────────────────
|
||||
|
||||
static void testDefectiveVerifyCorrect() {
|
||||
DefectiveCredentialStore store = new DefectiveCredentialStore();
|
||||
store.storePassword("alice", "hunter2");
|
||||
assertTrue("defective: correct password verified", store.verify("alice", "hunter2"));
|
||||
}
|
||||
|
||||
static void testDefectiveRejectWrong() {
|
||||
DefectiveCredentialStore store = new DefectiveCredentialStore();
|
||||
store.storePassword("alice", "hunter2");
|
||||
assertFalse("defective: wrong password rejected", store.verify("alice", "wrongpass"));
|
||||
}
|
||||
|
||||
static void testFixedVerifyCorrect() {
|
||||
FixedCredentialStore store = new FixedCredentialStore();
|
||||
store.storePassword("bob", "correct-horse-battery-staple");
|
||||
assertTrue("fixed: correct password verified", store.verify("bob", "correct-horse-battery-staple"));
|
||||
}
|
||||
|
||||
static void testFixedRejectWrong() {
|
||||
FixedCredentialStore store = new FixedCredentialStore();
|
||||
store.storePassword("bob", "correct-horse-battery-staple");
|
||||
assertFalse("fixed: wrong password rejected", store.verify("bob", "wrong-answer"));
|
||||
}
|
||||
|
||||
// ── Defect ────────────────────────────────────────────────────────────────
|
||||
|
||||
static void testDefectivePasswordExtractable() {
|
||||
DefectiveCredentialStore store = new DefectiveCredentialStore();
|
||||
store.storePassword("alice", "s3cr3t!");
|
||||
|
||||
// DEFECT: attacker with DB access calls extractPassword()
|
||||
String extracted = store.extractPassword("alice");
|
||||
assertEqual("defective: original password extracted from DB (glass safe opens)",
|
||||
"s3cr3t!", extracted);
|
||||
}
|
||||
|
||||
static void testDefectiveDeterministicStorage() {
|
||||
DefectiveCredentialStore store1 = new DefectiveCredentialStore();
|
||||
DefectiveCredentialStore store2 = new DefectiveCredentialStore();
|
||||
store1.storePassword("u1", "password123");
|
||||
store2.storePassword("u2", "password123");
|
||||
|
||||
// DEFECT: same password → same stored value → rainbow table attack works
|
||||
String raw1 = store1.rawStored("u1");
|
||||
String raw2 = store2.rawStored("u2");
|
||||
assertEqual("defective: same password produces identical stored values (no salt)",
|
||||
raw1, raw2);
|
||||
}
|
||||
|
||||
static void testDefectiveMultipleUsersExtractable() {
|
||||
DefectiveCredentialStore store = new DefectiveCredentialStore();
|
||||
store.storePassword("admin", "admin123");
|
||||
store.storePassword("finance", "Q4RevenueReport!");
|
||||
|
||||
// DEFECT: all users' passwords extractable from one DB dump
|
||||
assertEqual("defective: admin password extracted", "admin123", store.extractPassword("admin"));
|
||||
assertEqual("defective: finance password extracted", "Q4RevenueReport!", store.extractPassword("finance"));
|
||||
}
|
||||
|
||||
// ── Fix ───────────────────────────────────────────────────────────────────
|
||||
|
||||
static void testFixedPasswordNotExtractable() {
|
||||
FixedCredentialStore store = new FixedCredentialStore();
|
||||
store.storePassword("alice", "s3cr3t!");
|
||||
|
||||
// FIX: raw hash is stored — cannot reverse to original password
|
||||
byte[] hash = store.rawHash("alice");
|
||||
byte[] salt = store.rawSalt("alice");
|
||||
|
||||
assertNotNull("fixed: hash exists in store", hash);
|
||||
assertNotNull("fixed: salt exists in store", salt);
|
||||
|
||||
// Verify hash does not equal password bytes
|
||||
String hashHex = bytesToHex(hash);
|
||||
assertNotContains("fixed: hash does not contain plaintext password",
|
||||
hashHex, "s3cr3t!");
|
||||
|
||||
// FIX: no extractPassword() method exists on FixedCredentialStore
|
||||
// (This is verified by the fact that FixedCredentialStore does not have that method —
|
||||
// the API surface itself proves the fix.)
|
||||
assertTrue("fixed: FixedCredentialStore has no extractPassword() method (API enforces fix)",
|
||||
!hasExtractMethod(store));
|
||||
}
|
||||
|
||||
static void testFixedSaltRandomization() {
|
||||
// Store the same password for two users
|
||||
FixedCredentialStore store = new FixedCredentialStore();
|
||||
store.storePassword("u1", "shared-password");
|
||||
store.storePassword("u2", "shared-password");
|
||||
|
||||
byte[] hash1 = store.rawHash("u1");
|
||||
byte[] hash2 = store.rawHash("u2");
|
||||
byte[] salt1 = store.rawSalt("u1");
|
||||
byte[] salt2 = store.rawSalt("u2");
|
||||
|
||||
// FIX: different salts → different hashes — rainbow table attack fails
|
||||
assertNotEqualBytes("fixed: same password produces different hashes (random salt)",
|
||||
hash1, hash2);
|
||||
assertNotEqualBytes("fixed: unique salt per user", salt1, salt2);
|
||||
}
|
||||
|
||||
static void testFixedHashNotEqualToPassword() {
|
||||
FixedCredentialStore store = new FixedCredentialStore();
|
||||
String password = "mypassword";
|
||||
store.storePassword("user", password);
|
||||
byte[] hash = store.rawHash("user");
|
||||
// Hash bytes should not equal password bytes
|
||||
byte[] passwordBytes = password.getBytes(java.nio.charset.StandardCharsets.UTF_8);
|
||||
assertFalseBytes("fixed: stored hash does not equal password bytes", hash, passwordBytes);
|
||||
}
|
||||
|
||||
// ── Helpers ───────────────────────────────────────────────────────────────
|
||||
|
||||
static void assertEqual(String label, String expected, String actual) {
|
||||
if (expected == null ? actual == null : expected.equals(actual)) {
|
||||
System.out.printf(" PASS: %s%n", label);
|
||||
passed++;
|
||||
} else {
|
||||
System.out.printf(" FAIL: %s — expected '%s', got '%s'%n", label, expected, actual);
|
||||
failed++;
|
||||
}
|
||||
}
|
||||
|
||||
static void assertTrue(String label, boolean condition) {
|
||||
if (condition) {
|
||||
System.out.printf(" PASS: %s%n", label);
|
||||
passed++;
|
||||
} else {
|
||||
System.out.printf(" FAIL: %s%n", label);
|
||||
failed++;
|
||||
}
|
||||
}
|
||||
|
||||
static void assertFalse(String label, boolean condition) {
|
||||
assertTrue(label, !condition);
|
||||
}
|
||||
|
||||
static void assertNotNull(String label, Object obj) {
|
||||
assertTrue(label + " (not null)", obj != null);
|
||||
}
|
||||
|
||||
static void assertNotContains(String label, String haystack, String needle) {
|
||||
if (!haystack.contains(needle)) {
|
||||
System.out.printf(" PASS: %s%n", label);
|
||||
passed++;
|
||||
} else {
|
||||
System.out.printf(" FAIL: %s — found '%s' in '%s'%n", label, needle, haystack);
|
||||
failed++;
|
||||
}
|
||||
}
|
||||
|
||||
static void assertNotEqualBytes(String label, byte[] a, byte[] b) {
|
||||
if (!java.util.Arrays.equals(a, b)) {
|
||||
System.out.printf(" PASS: %s%n", label);
|
||||
passed++;
|
||||
} else {
|
||||
System.out.printf(" FAIL: %s — byte arrays are equal when they should differ%n", label);
|
||||
failed++;
|
||||
}
|
||||
}
|
||||
|
||||
static void assertFalseBytes(String label, byte[] a, byte[] b) {
|
||||
assertNotEqualBytes(label, a, b);
|
||||
}
|
||||
|
||||
static boolean hasExtractMethod(FixedCredentialStore store) {
|
||||
try {
|
||||
store.getClass().getMethod("extractPassword", String.class);
|
||||
return true;
|
||||
} catch (NoSuchMethodException e) {
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
static String bytesToHex(byte[] bytes) {
|
||||
StringBuilder sb = new StringBuilder();
|
||||
for (byte b : bytes) sb.append(String.format("%02x", b));
|
||||
return sb.toString();
|
||||
}
|
||||
}
|
||||
207
tests/unit/Moad0007UnitTest.java
Normal file
207
tests/unit/Moad0007UnitTest.java
Normal file
|
|
@ -0,0 +1,207 @@
|
|||
package unit;
|
||||
|
||||
import support.Moad0007Algorithm;
|
||||
import support.Moad0007Algorithm.SpatialObject;
|
||||
import support.Moad0007Algorithm.Result;
|
||||
|
||||
import java.util.List;
|
||||
|
||||
/**
|
||||
* Unit tests for MOAD-0007: CWE-407 — A Flatland Defect.
|
||||
*
|
||||
* Proves from first principles:
|
||||
* 1. Both defective and fixed produce identical query results (same hits).
|
||||
* 2. Defective: queryDefective() visits all N objects for every query —
|
||||
* probeCount == N regardless of how many objects match.
|
||||
* 3. Fixed: queryFixed() visits O(log N + k) objects — probeCount grows as
|
||||
* log₂(N) for empty queries and log₂(N)+k for queries returning k hits.
|
||||
* 4. Doubling N doubles defective probes; fixed probes grow only by 1 (log step).
|
||||
* 5. Empty-range query: defective still visits all N; fixed visits O(log N).
|
||||
*
|
||||
* No build tool required. Compile and run:
|
||||
*
|
||||
* cd tests
|
||||
* java -m jdk.compiler/com.sun.tools.javac.Main -cp . \
|
||||
* support/Moad0007Algorithm.java unit/Moad0007UnitTest.java
|
||||
* java -cp . unit.Moad0007UnitTest
|
||||
*/
|
||||
public class Moad0007UnitTest {
|
||||
|
||||
private static int passed = 0;
|
||||
private static int failed = 0;
|
||||
|
||||
public static void main(String[] args) {
|
||||
System.out.println("=== Moad0007UnitTest (A Flatland Defect) ===\n");
|
||||
|
||||
System.out.println("-- Correctness: same query results from both implementations --");
|
||||
testSmallSceneAllMatch();
|
||||
testSmallScenePartialMatch();
|
||||
testSmallSceneNoMatch();
|
||||
|
||||
System.out.println("\n-- Defect: linear scan visits all N objects (O(N) probes) --");
|
||||
testDefectiveProbesAllN100();
|
||||
testDefectiveProbesAllN200();
|
||||
testDefectiveEmptyQueryStillVisitsAllN();
|
||||
|
||||
System.out.println("\n-- Fix: binary search visits O(log N + k) objects --");
|
||||
testFixedProbesLogN100();
|
||||
testFixedProbesLogN200();
|
||||
testFixedEmptyQueryVisitsLogN();
|
||||
|
||||
System.out.println("\n-- Complexity: doubling N doubles defective probes, barely changes fixed --");
|
||||
testDoublingNEffect();
|
||||
|
||||
System.out.printf("\n%d passed, %d failed%n", passed, failed);
|
||||
if (failed > 0) System.exit(1);
|
||||
}
|
||||
|
||||
// ── Correctness ───────────────────────────────────────────────────────────
|
||||
|
||||
static void testSmallSceneAllMatch() {
|
||||
List<SpatialObject> scene = Moad0007Algorithm.buildScene(10, 100.0);
|
||||
SpatialObject[] index = Moad0007Algorithm.buildIndex(scene);
|
||||
|
||||
Result def = Moad0007Algorithm.queryDefective(scene, 0.0, 100.0);
|
||||
Result fix = Moad0007Algorithm.queryFixed(index, 0.0, 100.0);
|
||||
|
||||
assertEqual("correctness: all-match hit counts equal", def.hits.size(), fix.hits.size());
|
||||
assertEqual("correctness: all-match returns 10 hits", 10, def.hits.size());
|
||||
}
|
||||
|
||||
static void testSmallScenePartialMatch() {
|
||||
List<SpatialObject> scene = Moad0007Algorithm.buildScene(10, 100.0);
|
||||
SpatialObject[] index = Moad0007Algorithm.buildIndex(scene);
|
||||
|
||||
// Middle third: positions [33, 66]
|
||||
Result def = Moad0007Algorithm.queryDefective(scene, 33.0, 66.0);
|
||||
Result fix = Moad0007Algorithm.queryFixed(index, 33.0, 66.0);
|
||||
|
||||
assertEqual("correctness: partial-match hit counts equal", def.hits.size(), fix.hits.size());
|
||||
assertTrue("correctness: partial match returns some hits (>0, <10)",
|
||||
def.hits.size() > 0 && def.hits.size() < 10,
|
||||
"hits=" + def.hits.size());
|
||||
}
|
||||
|
||||
static void testSmallSceneNoMatch() {
|
||||
List<SpatialObject> scene = Moad0007Algorithm.buildScene(10, 100.0);
|
||||
SpatialObject[] index = Moad0007Algorithm.buildIndex(scene);
|
||||
|
||||
// Query outside the scene bounds
|
||||
Result def = Moad0007Algorithm.queryDefective(scene, 200.0, 300.0);
|
||||
Result fix = Moad0007Algorithm.queryFixed(index, 200.0, 300.0);
|
||||
|
||||
assertEqual("correctness: no-match — both return 0 hits (defective)", 0, def.hits.size());
|
||||
assertEqual("correctness: no-match — both return 0 hits (fixed)", 0, fix.hits.size());
|
||||
}
|
||||
|
||||
// ── Defect ────────────────────────────────────────────────────────────────
|
||||
|
||||
static void testDefectiveProbesAllN100() {
|
||||
int N = 100;
|
||||
List<SpatialObject> scene = Moad0007Algorithm.buildScene(N, 1000.0);
|
||||
// Even a no-match query visits all N
|
||||
Result result = Moad0007Algorithm.queryDefective(scene, 2000.0, 3000.0);
|
||||
assertEqual("defective N=100: probes all 100 objects (even no-match)", N, result.probeCount);
|
||||
}
|
||||
|
||||
static void testDefectiveProbesAllN200() {
|
||||
int N = 200;
|
||||
List<SpatialObject> scene = Moad0007Algorithm.buildScene(N, 1000.0);
|
||||
Result result = Moad0007Algorithm.queryDefective(scene, 2000.0, 3000.0);
|
||||
assertEqual("defective N=200: probes all 200 objects", N, result.probeCount);
|
||||
}
|
||||
|
||||
static void testDefectiveEmptyQueryStillVisitsAllN() {
|
||||
int N = 150;
|
||||
List<SpatialObject> scene = Moad0007Algorithm.buildScene(N, 500.0);
|
||||
Result result = Moad0007Algorithm.queryDefective(scene, -100.0, -50.0); // no objects here
|
||||
assertEqual("defective: empty-range query still visits all N=" + N, N, result.probeCount);
|
||||
}
|
||||
|
||||
// ── Fix ───────────────────────────────────────────────────────────────────
|
||||
|
||||
static void testFixedProbesLogN100() {
|
||||
int N = 100;
|
||||
List<SpatialObject> scene = Moad0007Algorithm.buildScene(N, 1000.0);
|
||||
SpatialObject[] index = Moad0007Algorithm.buildIndex(scene);
|
||||
// No-match query: probes should be O(log N) = ~7 for N=100
|
||||
Result result = Moad0007Algorithm.queryFixed(index, 2000.0, 3000.0);
|
||||
// Binary search on 100 elements: at most ceil(log2(100)) = 7 steps, plus 1 for the exit check
|
||||
int expectedMax = (int)(Math.ceil(Math.log(N) / Math.log(2))) + 2;
|
||||
assertTrue("fixed N=100: no-match query probes <= " + expectedMax + " (log N)",
|
||||
result.probeCount <= expectedMax,
|
||||
"probeCount=" + result.probeCount);
|
||||
assertTrue("fixed N=100: probes much less than N",
|
||||
result.probeCount < N / 4,
|
||||
"probeCount=" + result.probeCount + " N=" + N);
|
||||
}
|
||||
|
||||
static void testFixedProbesLogN200() {
|
||||
int N = 200;
|
||||
List<SpatialObject> scene = Moad0007Algorithm.buildScene(N, 1000.0);
|
||||
SpatialObject[] index = Moad0007Algorithm.buildIndex(scene);
|
||||
Result result = Moad0007Algorithm.queryFixed(index, 2000.0, 3000.0);
|
||||
int expectedMax = (int)(Math.ceil(Math.log(N) / Math.log(2))) + 2;
|
||||
assertTrue("fixed N=200: no-match query probes <= " + expectedMax,
|
||||
result.probeCount <= expectedMax,
|
||||
"probeCount=" + result.probeCount);
|
||||
}
|
||||
|
||||
static void testFixedEmptyQueryVisitsLogN() {
|
||||
int N = 128; // power of 2 for clean log result
|
||||
List<SpatialObject> scene = Moad0007Algorithm.buildScene(N, 1000.0);
|
||||
SpatialObject[] index = Moad0007Algorithm.buildIndex(scene);
|
||||
Result result = Moad0007Algorithm.queryFixed(index, -100.0, -1.0); // below all objects
|
||||
// Binary search on 128 elements: 7 steps max (log2(128) = 7)
|
||||
assertTrue("fixed N=128: out-of-range query probes at most 9 (log N + overhead)",
|
||||
result.probeCount <= 9,
|
||||
"probeCount=" + result.probeCount);
|
||||
}
|
||||
|
||||
// ── Complexity ────────────────────────────────────────────────────────────
|
||||
|
||||
static void testDoublingNEffect() {
|
||||
// Defective: doubling N doubles probes
|
||||
int N1 = 100, N2 = 200;
|
||||
List<SpatialObject> s1 = Moad0007Algorithm.buildScene(N1, 1000.0);
|
||||
List<SpatialObject> s2 = Moad0007Algorithm.buildScene(N2, 1000.0);
|
||||
SpatialObject[] i1 = Moad0007Algorithm.buildIndex(s1);
|
||||
SpatialObject[] i2 = Moad0007Algorithm.buildIndex(s2);
|
||||
|
||||
Result def1 = Moad0007Algorithm.queryDefective(s1, 2000.0, 3000.0);
|
||||
Result def2 = Moad0007Algorithm.queryDefective(s2, 2000.0, 3000.0);
|
||||
Result fix1 = Moad0007Algorithm.queryFixed(i1, 2000.0, 3000.0);
|
||||
Result fix2 = Moad0007Algorithm.queryFixed(i2, 2000.0, 3000.0);
|
||||
|
||||
// Defective: probes double exactly with N
|
||||
assertEqual("defective: doubling N doubles probes (linear)", def1.probeCount * 2, def2.probeCount);
|
||||
|
||||
// Fixed: doubling N adds at most 1 log step
|
||||
int fixDelta = fix2.probeCount - fix1.probeCount;
|
||||
assertTrue("fixed: doubling N adds at most 1 probe (log growth)",
|
||||
fixDelta <= 1,
|
||||
"fix1.probes=" + fix1.probeCount + " fix2.probes=" + fix2.probeCount + " delta=" + fixDelta);
|
||||
}
|
||||
|
||||
// ── Helpers ───────────────────────────────────────────────────────────────
|
||||
|
||||
static void assertEqual(String label, int expected, int actual) {
|
||||
if (expected == actual) {
|
||||
System.out.printf(" PASS: %s%n", label);
|
||||
passed++;
|
||||
} else {
|
||||
System.out.printf(" FAIL: %s — expected %d, got %d%n", label, expected, actual);
|
||||
failed++;
|
||||
}
|
||||
}
|
||||
|
||||
static void assertTrue(String label, boolean condition, String detail) {
|
||||
if (condition) {
|
||||
System.out.printf(" PASS: %s%n", label);
|
||||
passed++;
|
||||
} else {
|
||||
System.out.printf(" FAIL: %s — %s%n", label, detail);
|
||||
failed++;
|
||||
}
|
||||
}
|
||||
}
|
||||
174
tests/unit/Moad0009UnitTest.java
Normal file
174
tests/unit/Moad0009UnitTest.java
Normal file
|
|
@ -0,0 +1,174 @@
|
|||
package unit;
|
||||
|
||||
import support.Moad0009Algorithm;
|
||||
import support.Moad0009Algorithm.Event;
|
||||
import support.Moad0009Algorithm.Result;
|
||||
|
||||
import java.util.List;
|
||||
|
||||
/**
|
||||
* Unit tests for MOAD-0009: A Metered Heart.
|
||||
*
|
||||
* Proves from first principles:
|
||||
* 1. Defective scheduler fires on every timer tick (N firings for N ticks)
|
||||
* even when only M events occur — N - M firings are wasted.
|
||||
* 2. Fixed event-driven handler fires exactly once per event (M firings for M events).
|
||||
* 3. Both correctly process the same set of events (same events handled).
|
||||
* 4. Defective wastes fire count grows with poll interval; fixed stays constant.
|
||||
* 5. Zero-event scenario: defective fires N times on empty queue; fixed fires 0.
|
||||
*
|
||||
* No build tool required. Compile and run:
|
||||
*
|
||||
* cd tests
|
||||
* java -m jdk.compiler/com.sun.tools.javac.Main -cp . \
|
||||
* support/Moad0009Algorithm.java unit/Moad0009UnitTest.java
|
||||
* java -cp . unit.Moad0009UnitTest
|
||||
*/
|
||||
public class Moad0009UnitTest {
|
||||
|
||||
private static int passed = 0;
|
||||
private static int failed = 0;
|
||||
|
||||
public static void main(String[] args) {
|
||||
System.out.println("=== Moad0009UnitTest (A Metered Heart) ===\n");
|
||||
|
||||
System.out.println("-- Correctness: both process the same events --");
|
||||
testBothProcessSameEvents();
|
||||
testBothHandleNoEvents();
|
||||
|
||||
System.out.println("\n-- Defect: timer fires N times regardless of M events --");
|
||||
testDefectiveFiresEveryTick();
|
||||
testDefectiveWastedFiresN100M3();
|
||||
testDefectiveZeroEventsStillFiresN();
|
||||
|
||||
System.out.println("\n-- Fix: fires exactly once per event --");
|
||||
testFixedFiresExactlyMTimes();
|
||||
testFixedZeroEventsZeroFirings();
|
||||
testFixedFireCountEqualsEventCount();
|
||||
|
||||
System.out.println("\n-- Comparison: defective wastes grow with poll count; fixed stays M --");
|
||||
testWastedFiresGrowWithPollCount();
|
||||
|
||||
System.out.printf("\n%d passed, %d failed%n", passed, failed);
|
||||
if (failed > 0) System.exit(1);
|
||||
}
|
||||
|
||||
// ── Correctness ───────────────────────────────────────────────────────────
|
||||
|
||||
static void testBothProcessSameEvents() {
|
||||
List<Event> events = Moad0009Algorithm.buildEvents(3, 10);
|
||||
Result def = Moad0009Algorithm.runDefectiveScheduler(20, events);
|
||||
Result fix = Moad0009Algorithm.runFixedEventDriven(events);
|
||||
|
||||
assertEqual("correctness: both process same event count", def.eventsProcessed, fix.eventsProcessed);
|
||||
assertEqual("correctness: both process all 3 events", 3, def.eventsProcessed);
|
||||
}
|
||||
|
||||
static void testBothHandleNoEvents() {
|
||||
List<Event> events = List.of();
|
||||
Result def = Moad0009Algorithm.runDefectiveScheduler(10, events);
|
||||
Result fix = Moad0009Algorithm.runFixedEventDriven(events);
|
||||
|
||||
assertEqual("correctness: both process 0 events from empty list", 0, def.eventsProcessed);
|
||||
assertEqual("correctness: fixed: 0 events processed", 0, fix.eventsProcessed);
|
||||
}
|
||||
|
||||
// ── Defect ────────────────────────────────────────────────────────────────
|
||||
|
||||
static void testDefectiveFiresEveryTick() {
|
||||
int ticks = 50;
|
||||
List<Event> events = Moad0009Algorithm.buildEvents(2, ticks);
|
||||
Result result = Moad0009Algorithm.runDefectiveScheduler(ticks, events);
|
||||
// DEFECT: fires every tick regardless of events
|
||||
assertEqual("defective: fires exactly N=" + ticks + " times", ticks, result.firings);
|
||||
}
|
||||
|
||||
static void testDefectiveWastedFiresN100M3() {
|
||||
int ticks = 100;
|
||||
int eventCount = 3;
|
||||
List<Event> events = Moad0009Algorithm.buildEvents(eventCount, ticks);
|
||||
Result result = Moad0009Algorithm.runDefectiveScheduler(ticks, events);
|
||||
|
||||
// DEFECT: 100 firings for 3 events = 97 wasted firings (97% waste)
|
||||
int wasted = result.firings - result.eventsProcessed;
|
||||
assertEqual("defective: 97 wasted firings (100 ticks, 3 events)", 97, wasted);
|
||||
assertTrue("defective: waste ratio > 95%",
|
||||
(double) wasted / result.firings > 0.95,
|
||||
"wasted=" + wasted + " total=" + result.firings);
|
||||
}
|
||||
|
||||
static void testDefectiveZeroEventsStillFiresN() {
|
||||
int ticks = 60;
|
||||
List<Event> events = List.of();
|
||||
Result result = Moad0009Algorithm.runDefectiveScheduler(ticks, events);
|
||||
// DEFECT: no events exist, but timer still fires 60 times — pure waste
|
||||
assertEqual("defective: 0 events, fires N=" + ticks + " times (100% waste)", ticks, result.firings);
|
||||
assertEqual("defective: 0 events processed", 0, result.eventsProcessed);
|
||||
}
|
||||
|
||||
// ── Fix ───────────────────────────────────────────────────────────────────
|
||||
|
||||
static void testFixedFiresExactlyMTimes() {
|
||||
List<Event> events = Moad0009Algorithm.buildEvents(5, 100);
|
||||
Result result = Moad0009Algorithm.runFixedEventDriven(events);
|
||||
assertEqual("fixed: fires exactly M=5 times (one per event)", 5, result.firings);
|
||||
}
|
||||
|
||||
static void testFixedZeroEventsZeroFirings() {
|
||||
List<Event> events = List.of();
|
||||
Result result = Moad0009Algorithm.runFixedEventDriven(events);
|
||||
assertEqual("fixed: 0 events → 0 firings (no wasted work)", 0, result.firings);
|
||||
}
|
||||
|
||||
static void testFixedFireCountEqualsEventCount() {
|
||||
for (int m : new int[]{1, 7, 23, 100}) {
|
||||
List<Event> events = Moad0009Algorithm.buildEvents(m, 200);
|
||||
Result result = Moad0009Algorithm.runFixedEventDriven(events);
|
||||
assertEqual("fixed: M=" + m + " events → exactly M=" + m + " firings",
|
||||
m, result.firings);
|
||||
}
|
||||
}
|
||||
|
||||
// ── Comparison ────────────────────────────────────────────────────────────
|
||||
|
||||
static void testWastedFiresGrowWithPollCount() {
|
||||
List<Event> events = Moad0009Algorithm.buildEvents(2, 200);
|
||||
|
||||
// More ticks = more waste in defective; fixed stays at M=2
|
||||
Result def50 = Moad0009Algorithm.runDefectiveScheduler(50, events);
|
||||
Result def200 = Moad0009Algorithm.runDefectiveScheduler(200, events);
|
||||
Result fix = Moad0009Algorithm.runFixedEventDriven(events);
|
||||
|
||||
assertTrue("defective: 50 ticks → 50 firings", def50.firings == 50, "got " + def50.firings);
|
||||
assertTrue("defective: 200 ticks → 200 firings", def200.firings == 200, "got " + def200.firings);
|
||||
assertTrue("fixed: always 2 firings regardless of tick count", fix.firings == 2, "got " + fix.firings);
|
||||
|
||||
// Wasted = defective.firings - events processed
|
||||
int waste50 = def50.firings - def50.eventsProcessed;
|
||||
int waste200 = def200.firings - def200.eventsProcessed;
|
||||
assertTrue("defective: waste grows with tick count (200 > 50)",
|
||||
waste200 > waste50, "waste50=" + waste50 + " waste200=" + waste200);
|
||||
}
|
||||
|
||||
// ── Helpers ───────────────────────────────────────────────────────────────
|
||||
|
||||
static void assertEqual(String label, int expected, int actual) {
|
||||
if (expected == actual) {
|
||||
System.out.printf(" PASS: %s%n", label);
|
||||
passed++;
|
||||
} else {
|
||||
System.out.printf(" FAIL: %s — expected %d, got %d%n", label, expected, actual);
|
||||
failed++;
|
||||
}
|
||||
}
|
||||
|
||||
static void assertTrue(String label, boolean condition, String detail) {
|
||||
if (condition) {
|
||||
System.out.printf(" PASS: %s%n", label);
|
||||
passed++;
|
||||
} else {
|
||||
System.out.printf(" FAIL: %s — %s%n", label, detail);
|
||||
failed++;
|
||||
}
|
||||
}
|
||||
}
|
||||
210
tests/unit/Moad0011UnitTest.java
Normal file
210
tests/unit/Moad0011UnitTest.java
Normal file
|
|
@ -0,0 +1,210 @@
|
|||
package unit;
|
||||
|
||||
import support.Moad0011Algorithm;
|
||||
import support.Moad0011Algorithm.Result;
|
||||
|
||||
/**
|
||||
* Unit tests for MOAD-0011: CWE-1333 — A Catastrophic Inheritance.
|
||||
*
|
||||
* Proves from first principles:
|
||||
* 1. Structural: hasCatastrophicStructure() detects nested quantifiers in
|
||||
* known-bad patterns and passes known-safe patterns.
|
||||
* 2. Behavioral (step counting): defective NFA for (a+)+b explores
|
||||
* exponentially many states on adversarial input; fixed NFA is linear.
|
||||
* 3. Growth: doubling adversarial input length more than doubles defective
|
||||
* steps (super-linear / exponential growth); fixed steps grow exactly linearly.
|
||||
* 4. Both produce identical match results on matching and non-matching inputs.
|
||||
*
|
||||
* The step-counting NFA proves the algorithmic complexity without relying on
|
||||
* wall-clock timing — suitable for deterministic unit testing. Functional tests
|
||||
* use a timed match on a moderate adversarial input to prove behavioral impact.
|
||||
*
|
||||
* No build tool required. Compile and run:
|
||||
*
|
||||
* cd tests
|
||||
* java -m jdk.compiler/com.sun.tools.javac.Main -cp . \
|
||||
* support/Moad0011Algorithm.java unit/Moad0011UnitTest.java
|
||||
* java -cp . unit.Moad0011UnitTest
|
||||
*/
|
||||
public class Moad0011UnitTest {
|
||||
|
||||
private static int passed = 0;
|
||||
private static int failed = 0;
|
||||
|
||||
public static void main(String[] args) {
|
||||
System.out.println("=== Moad0011UnitTest (A Catastrophic Inheritance) ===\n");
|
||||
|
||||
System.out.println("-- Structural detection: hasCatastrophicStructure() --");
|
||||
testDetectsKnownBadPatterns();
|
||||
testPassesKnownSafePatterns();
|
||||
|
||||
System.out.println("\n-- Correctness: both produce identical match results --");
|
||||
testBothMatchMatchingInput();
|
||||
testBothRejectNonMatchingInput();
|
||||
testBothMatchSingleA();
|
||||
|
||||
System.out.println("\n-- Defect: step count grows super-linearly on adversarial input --");
|
||||
testDefectiveStepCountExponentialGrowth();
|
||||
testDefectiveAdversarialN8IsLarge();
|
||||
|
||||
System.out.println("\n-- Fix: step count grows linearly on adversarial input --");
|
||||
testFixedStepCountLinearGrowth();
|
||||
testFixedAdversarialN8IsSmall();
|
||||
|
||||
System.out.println("\n-- Ratio: defective steps >> fixed steps on adversarial input --");
|
||||
testStepRatioAdvantageForFixed();
|
||||
|
||||
System.out.printf("\n%d passed, %d failed%n", passed, failed);
|
||||
if (failed > 0) System.exit(1);
|
||||
}
|
||||
|
||||
// ── Structural detection ──────────────────────────────────────────────────
|
||||
|
||||
static void testDetectsKnownBadPatterns() {
|
||||
String[] bad = {
|
||||
"(a+)+b", // classic ReDoS — outer + wraps inner a+
|
||||
"(a+)+", // same, no terminal
|
||||
"(a*)+", // inner * outer +
|
||||
"(ab+c*)+", // complex inner group with quantifiers
|
||||
Moad0011Algorithm.DEFECTIVE_PATTERN_BLEACH,
|
||||
Moad0011Algorithm.DEFECTIVE_PATTERN_CSS,
|
||||
};
|
||||
for (String p : bad) {
|
||||
assertTrue("detects bad pattern: " + p,
|
||||
Moad0011Algorithm.hasCatastrophicStructure(p),
|
||||
"expected catastrophic, got safe");
|
||||
}
|
||||
}
|
||||
|
||||
static void testPassesKnownSafePatterns() {
|
||||
String[] safe = {
|
||||
"a+b", // simple concatenation — no nesting
|
||||
"a+", // single quantifier
|
||||
"(a|b)+", // alternation with outer +, no inner quantifier
|
||||
"[a-z]+", // character class, single quantifier
|
||||
"(abc)+", // fixed group, no inner quantifier
|
||||
Moad0011Algorithm.FIXED_PATTERN_BLEACH,
|
||||
Moad0011Algorithm.FIXED_PATTERN_CSS,
|
||||
};
|
||||
for (String p : safe) {
|
||||
assertFalse("passes safe pattern: " + p,
|
||||
Moad0011Algorithm.hasCatastrophicStructure(p),
|
||||
"expected safe, got catastrophic");
|
||||
}
|
||||
}
|
||||
|
||||
// ── Correctness ───────────────────────────────────────────────────────────
|
||||
|
||||
static void testBothMatchMatchingInput() {
|
||||
String input = Moad0011Algorithm.matchingInput(5); // "aaaaab"
|
||||
Result def = Moad0011Algorithm.matchDefective(input);
|
||||
Result fix = Moad0011Algorithm.matchFixed(input);
|
||||
assertTrue("defective: matches 'aaaaab'", def.matched, "expected match");
|
||||
assertTrue("fixed: matches 'aaaaab'", fix.matched, "expected match");
|
||||
}
|
||||
|
||||
static void testBothRejectNonMatchingInput() {
|
||||
String input = Moad0011Algorithm.adversarialInput(5); // "aaaaac" — no 'b'
|
||||
Result def = Moad0011Algorithm.matchDefective(input);
|
||||
Result fix = Moad0011Algorithm.matchFixed(input);
|
||||
assertFalse("defective: rejects 'aaaaac'", def.matched, "expected no match");
|
||||
assertFalse("fixed: rejects 'aaaaac'", fix.matched, "expected no match");
|
||||
}
|
||||
|
||||
static void testBothMatchSingleA() {
|
||||
String input = "ab";
|
||||
Result def = Moad0011Algorithm.matchDefective(input);
|
||||
Result fix = Moad0011Algorithm.matchFixed(input);
|
||||
assertTrue("defective: matches 'ab'", def.matched, "expected match");
|
||||
assertTrue("fixed: matches 'ab'", fix.matched, "expected match");
|
||||
}
|
||||
|
||||
// ── Defect ────────────────────────────────────────────────────────────────
|
||||
|
||||
static void testDefectiveStepCountExponentialGrowth() {
|
||||
// Adversarial input: N a's + 'c' — non-matching, forces maximum backtracking
|
||||
long steps4 = Moad0011Algorithm.matchDefective(Moad0011Algorithm.adversarialInput(4)).steps;
|
||||
long steps6 = Moad0011Algorithm.matchDefective(Moad0011Algorithm.adversarialInput(6)).steps;
|
||||
long steps8 = Moad0011Algorithm.matchDefective(Moad0011Algorithm.adversarialInput(8)).steps;
|
||||
|
||||
// Exponential growth: steps8 >> steps6 >> steps4
|
||||
// Ratio should be super-linear (greater than linear doubling)
|
||||
double ratio64 = (double) steps6 / steps4;
|
||||
double ratio86 = (double) steps8 / steps6;
|
||||
|
||||
assertTrue("defective: steps grow super-linearly from N=4 to N=6 (ratio > 2.0)",
|
||||
ratio64 > 2.0, "ratio64=" + ratio64);
|
||||
assertTrue("defective: steps grow super-linearly from N=6 to N=8 (ratio > 2.0)",
|
||||
ratio86 > 2.0, "ratio86=" + ratio86);
|
||||
|
||||
System.out.printf(" steps N=4: %d, N=6: %d, N=8: %d (ratios: %.1fx, %.1fx)%n",
|
||||
steps4, steps6, steps8, ratio64, ratio86);
|
||||
}
|
||||
|
||||
static void testDefectiveAdversarialN8IsLarge() {
|
||||
long steps = Moad0011Algorithm.matchDefective(Moad0011Algorithm.adversarialInput(8)).steps;
|
||||
// N=8 adversarial input: expect hundreds or thousands of steps (super-linear)
|
||||
assertTrue("defective: N=8 adversarial input requires many steps (>50)",
|
||||
steps > 50, "steps=" + steps);
|
||||
}
|
||||
|
||||
// ── Fix ───────────────────────────────────────────────────────────────────
|
||||
|
||||
static void testFixedStepCountLinearGrowth() {
|
||||
long steps4 = Moad0011Algorithm.matchFixed(Moad0011Algorithm.adversarialInput(4)).steps;
|
||||
long steps8 = Moad0011Algorithm.matchFixed(Moad0011Algorithm.adversarialInput(8)).steps;
|
||||
long steps16 = Moad0011Algorithm.matchFixed(Moad0011Algorithm.adversarialInput(16)).steps;
|
||||
|
||||
// Linear growth: doubling N should roughly double steps (ratio ~2x)
|
||||
double ratio84 = (double) steps8 / steps4;
|
||||
double ratio168 = (double) steps16 / steps8;
|
||||
|
||||
// Allow ratio up to 3.0 to be generous with small constants, but it must not be exponential
|
||||
assertTrue("fixed: doubling N from 4 to 8 roughly doubles steps (ratio 1.0-3.0)",
|
||||
ratio84 >= 1.0 && ratio84 <= 3.0, "ratio84=" + ratio84);
|
||||
assertTrue("fixed: doubling N from 8 to 16 roughly doubles steps (ratio 1.0-3.0)",
|
||||
ratio168 >= 1.0 && ratio168 <= 3.0, "ratio168=" + ratio168);
|
||||
|
||||
System.out.printf(" steps N=4: %d, N=8: %d, N=16: %d (ratios: %.1fx, %.1fx)%n",
|
||||
steps4, steps8, steps16, ratio84, ratio168);
|
||||
}
|
||||
|
||||
static void testFixedAdversarialN8IsSmall() {
|
||||
long steps = Moad0011Algorithm.matchFixed(Moad0011Algorithm.adversarialInput(8)).steps;
|
||||
// Fixed NFA: O(N) steps — N=8 means steps should be a small multiple of 8
|
||||
assertTrue("fixed: N=8 adversarial requires <= 20 steps (linear)",
|
||||
steps <= 20, "steps=" + steps);
|
||||
}
|
||||
|
||||
// ── Ratio ─────────────────────────────────────────────────────────────────
|
||||
|
||||
static void testStepRatioAdvantageForFixed() {
|
||||
String adversarial = Moad0011Algorithm.adversarialInput(10);
|
||||
long defSteps = Moad0011Algorithm.matchDefective(adversarial).steps;
|
||||
long fixSteps = Moad0011Algorithm.matchFixed(adversarial).steps;
|
||||
|
||||
// At N=10, defective explores exponentially many states vs fixed linear scan
|
||||
double ratio = (double) defSteps / fixSteps;
|
||||
assertTrue("defective steps >> fixed steps at N=10 adversarial (ratio > 10x)",
|
||||
ratio > 10.0, "defSteps=" + defSteps + " fixSteps=" + fixSteps + " ratio=" + ratio);
|
||||
|
||||
System.out.printf(" N=10 adversarial: defective=%d steps, fixed=%d steps (%.0fx advantage)%n",
|
||||
defSteps, fixSteps, ratio);
|
||||
}
|
||||
|
||||
// ── Helpers ───────────────────────────────────────────────────────────────
|
||||
|
||||
static void assertTrue(String label, boolean condition, String detail) {
|
||||
if (condition) {
|
||||
System.out.printf(" PASS: %s%n", label);
|
||||
passed++;
|
||||
} else {
|
||||
System.out.printf(" FAIL: %s — %s%n", label, detail);
|
||||
failed++;
|
||||
}
|
||||
}
|
||||
|
||||
static void assertFalse(String label, boolean condition, String detail) {
|
||||
assertTrue(label, !condition, detail);
|
||||
}
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue