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undefect. CWE-407 — 63 sites patched across 27 ecosystems

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Authors: russell@unturf.com · brackishbert@gmail.com · foxhop.net · TimeHexOn.com

Patches, unit tests, benchmarks, whitepaper, and outreach briefs.
Public domain — no copyright claimed. Use freely.
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russell@unturf.com 2026-03-26 17:11:57 -04:00
commit 0a580b313d
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164
test/jdk/java/util/Collections/UnmodifiableMapEntrySet.java Normal file
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/*
* Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/**
* @test
* @run testng UnmodifiableMapEntrySet
* @summary Unit tests for wrapping classes should delegate to default methods
*/
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Spliterator;
import java.util.TreeMap;
import java.util.function.Consumer;
import java.util.function.Function;
import java.util.function.Supplier;
import org.testng.annotations.Test;
import org.testng.annotations.DataProvider;
import static org.testng.Assert.assertEquals;
@Test(groups = "unit")
public class UnmodifiableMapEntrySet {
static Object[][] collections;
static <M extends Map<Integer, Integer>> M fillMap(int size, M m) {
for (int i = 0; i < size; i++) {
m.put(i, i);
}
return m;
}
@DataProvider(name="maps")
static Object[][] mapCases() {
if (collections != null) {
return collections;
}
List<Object[]> cases = new ArrayList<>();
for (int size : new int[] {1, 2, 16}) {
cases.add(new Object[] {
String.format("new HashMap(%d)", size),
(Supplier<Map<Integer, Integer>>)
() -> Collections.unmodifiableMap(fillMap(size, new HashMap<>())) });
cases.add(new Object[] {
String.format("new TreeMap(%d)", size),
(Supplier<Map<Integer, Integer>>)
() -> Collections.unmodifiableSortedMap(fillMap(size, new TreeMap<>())) });
}
return cases.toArray(new Object[0][]);
}
static class EntryConsumer implements Consumer<Map.Entry<Integer, Integer>> {
int updates;
@Override
public void accept(Map.Entry<Integer, Integer> me) {
try {
me.setValue(Integer.MAX_VALUE);
updates++;
} catch (UnsupportedOperationException e) {
}
}
void assertNoUpdates() {
assertEquals(updates, 0, "Updates to entries");
}
}
void testWithEntryConsumer(Consumer<EntryConsumer> c) {
EntryConsumer ec = new EntryConsumer();
c.accept(ec);
ec.assertNoUpdates();
}
@Test(dataProvider = "maps")
public void testForEach(String d, Supplier<Map<Integer, Integer>> ms) {
testWithEntryConsumer(
ec -> ms.get().entrySet().forEach(ec));
}
@Test(dataProvider = "maps")
public void testIteratorForEachRemaining(String d, Supplier<Map<Integer, Integer>> ms) {
testWithEntryConsumer(
ec -> ms.get().entrySet().iterator().forEachRemaining(ec));
}
@Test(dataProvider = "maps")
public void testIteratorNext(String d, Supplier<Map<Integer, Integer>> ms) {
testWithEntryConsumer(ec -> {
for (Map.Entry<Integer, Integer> me : ms.get().entrySet()) {
ec.accept(me);
}
});
}
@Test(dataProvider = "maps")
public void testSpliteratorForEachRemaining(String d, Supplier<Map<Integer, Integer>> ms) {
testSpliterator(
ms.get().entrySet()::spliterator,
// Higher order function returning a consumer that
// traverses all spliterator elements using an EntryConsumer
s -> ec -> s.forEachRemaining(ec));
}
@Test(dataProvider = "maps")
public void testSpliteratorTryAdvance(String d, Supplier<Map<Integer, Integer>> ms) {
testSpliterator(
ms.get().entrySet()::spliterator,
// Higher order function returning a consumer that
// traverses all spliterator elements using an EntryConsumer
s -> ec -> { while (s.tryAdvance(ec)); });
}
void testSpliterator(Supplier<Spliterator<Map.Entry<Integer, Integer>>> ss,
// Higher order function that given a spliterator returns a
// consumer for that spliterator which traverses elements
// using an EntryConsumer
Function<Spliterator<Map.Entry<Integer, Integer>>, Consumer<EntryConsumer>> sc) {
testWithEntryConsumer(sc.apply(ss.get()));
Spliterator<Map.Entry<Integer, Integer>> s = ss.get();
Spliterator<Map.Entry<Integer, Integer>> split = s.trySplit();
if (split != null) {
testWithEntryConsumer(sc.apply(split));
testWithEntryConsumer(sc.apply(s));
}
}
@Test(dataProvider = "maps")
public void testStreamForEach(String d, Supplier<Map<Integer, Integer>> ms) {
testWithEntryConsumer(ec -> ms.get().entrySet().stream().forEach(ec));
}
@Test(dataProvider = "maps")
public void testParallelStreamForEach(String d, Supplier<Map<Integer, Integer>> ms) {
testWithEntryConsumer(ec -> ms.get().entrySet().parallelStream().forEach(ec));
}
}