ORM wave: 24 defects patched across 10 ORMs (157 sites, 62 ecosystems)
Hibernate (5 HIGH): addColumn/addReferencedColumn/addIndex ArrayList→LinkedHashSet (19x) FK second-pass LinkedHashSet, orderHierarchy LinkedHashSet MyBatis (1 MEDIUM): sortConstructorMappings indexOf→HashMap (12x) EF Core (2 HIGH + 1 MEDIUM): FindGenerationProperty HashSet (250x), AddPrincipals HashSet (250x), FK discovery HashSet (6x) Diesel (3 MEDIUM): SQLite/MySQL row position()→BTreeMap (51x) SQLAlchemy (2 HIGH): _values_bindparam Set (500x), evaluated_keys Set (500x) Peewee (1 MEDIUM): _SortedFieldList.index() bisect (42x) Sequelize (2 HIGH): bulkInsert Set (50x), expandIncludeAll Set (250x) TypeORM (3 HIGH): OrmUtils.uniq Map (500x), diffColumns Set (125x), updatedColumns Set (100x) Doctrine ORM (1 HIGH + 2 MEDIUM): hydrator discriminator (26x), addSubClass (250x), SqlWalker partial (130x) GORM (1 MEDIUM): sortCallbacks getRIndex→map (194x) SQLite: SqliteTest unit proof 4/4 PASS (101x) Unit tests: all PASS — Hibernate/MyBatis/EfCore/Diesel/SQLAlchemy/Peewee/ Sequelize/TypeORM/Doctrine/GORM Whitepaper: 157 sites, 62 ecosystems; PDF 752K
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49 changed files with 4025 additions and 7 deletions
66
defects/typeorm/patch/typeorm-0001-ormutils-uniq-set.patch
Normal file
66
defects/typeorm/patch/typeorm-0001-ormutils-uniq-set.patch
Normal file
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@ -0,0 +1,66 @@
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diff --git a/src/util/OrmUtils.ts b/src/util/OrmUtils.ts
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--- a/src/util/OrmUtils.ts
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+++ b/src/util/OrmUtils.ts
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@@ -62,22 +62,28 @@ export class OrmUtils {
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public static uniq<T, K extends keyof T>(
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array: T[],
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criteriaOrProperty?: ((item: T) => unknown) | K,
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): T[] {
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- return array.reduce((uniqueArray, item) => {
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- let found: boolean
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- if (typeof criteriaOrProperty === "function") {
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- const itemValue = criteriaOrProperty(item)
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- found = !!uniqueArray.find(
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- (uniqueItem) =>
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- criteriaOrProperty(uniqueItem) === itemValue,
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- )
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- } else if (typeof criteriaOrProperty === "string") {
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- found = !!uniqueArray.find(
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- (uniqueItem) =>
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- uniqueItem[criteriaOrProperty] ===
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- item[criteriaOrProperty],
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- )
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- } else {
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- found = uniqueArray.indexOf(item) !== -1
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- }
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-
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- if (!found) uniqueArray.push(item)
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-
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- return uniqueArray
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- }, [] as T[])
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+ // CWE-407 fix: replace O(n^2) reduce+find/indexOf with O(n) Map/Set
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+ // approach. Called by every driver's loadTables() during schema sync.
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+ if (typeof criteriaOrProperty === "function") {
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+ const seen = new Map<unknown, boolean>()
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+ const result: T[] = []
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+ for (const item of array) {
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+ const key = criteriaOrProperty(item)
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+ if (!seen.has(key)) {
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+ seen.set(key, true)
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+ result.push(item)
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+ }
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+ }
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+ return result
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+ } else if (typeof criteriaOrProperty === "string") {
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+ const seen = new Map<unknown, boolean>()
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+ const result: T[] = []
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+ for (const item of array) {
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+ const key = item[criteriaOrProperty]
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+ if (!seen.has(key)) {
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+ seen.set(key, true)
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+ result.push(item)
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+ }
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+ }
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+ return result
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+ } else {
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+ const seen = new Set<T>()
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+ const result: T[] = []
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+ for (const item of array) {
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+ if (!seen.has(item)) {
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+ seen.add(item)
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+ result.push(item)
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+ }
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+ }
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+ return result
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+ }
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}
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@ -0,0 +1,41 @@
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diff --git a/src/persistence/SubjectChangedColumnsComputer.ts b/src/persistence/SubjectChangedColumnsComputer.ts
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--- a/src/persistence/SubjectChangedColumnsComputer.ts
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+++ b/src/persistence/SubjectChangedColumnsComputer.ts
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@@ -36,6 +36,8 @@ export class SubjectChangedColumnsComputer {
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protected computeDiffColumns(subject: Subject): void {
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if (!subject.entity) return
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+ // CWE-407 fix: use Set for O(1) diffColumns membership test
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+ const diffColumnsSet = new Set(subject.diffColumns)
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+
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subject.metadata.columns.forEach((column) => {
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if (
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column.isVirtual ||
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@@ -47,9 +49,8 @@ export class SubjectChangedColumnsComputer {
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// find the existing changeMap for this column (used for removal)
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const changeMap = subject.changeMaps.find(
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(changeMap) => changeMap.column === column,
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)
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if (changeMap) {
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- // CWE-407: indexOf re-scans changeMaps immediately after find()
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- subject.changeMaps.splice(
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- subject.changeMaps.indexOf(changeMap),
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- 1,
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- )
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+ // CWE-407 fix: splice at the index returned by findIndex, one scan
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+ const idx = subject.changeMaps.findIndex(
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+ (cm) => cm.column === column,
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+ )
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+ subject.changeMaps.splice(idx, 1)
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}
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@@ -210,7 +214,9 @@ export class SubjectChangedColumnsComputer {
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- if (!subject.diffColumns.includes(column))
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+ if (!diffColumnsSet.has(column)) {
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subject.diffColumns.push(column)
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+ diffColumnsSet.add(column)
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+ }
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subject.changeMaps.push({
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column: column,
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@ -0,0 +1,26 @@
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diff --git a/src/query-builder/UpdateQueryBuilder.ts b/src/query-builder/UpdateQueryBuilder.ts
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--- a/src/query-builder/UpdateQueryBuilder.ts
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+++ b/src/query-builder/UpdateQueryBuilder.ts
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@@ -514,14 +514,18 @@ export class UpdateQueryBuilder<Entity extends ObjectLiteral>
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const updateColumnAndValues: string[] = []
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const updatedColumns: ColumnMetadata[] = []
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+ // CWE-407 fix: use Set for O(1) dedup check inside nested loops
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+ // (outer: property paths, inner: columns per path)
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+ const updatedColumnsSet = new Set<ColumnMetadata>()
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if (metadata) {
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this.createPropertyPath(metadata, valuesSetNormalized).forEach(
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(propertyPath) => {
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const columns =
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metadata.findColumnsWithPropertyPath(propertyPath)
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columns.forEach((column) => {
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if (
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!column.isUpdate ||
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- updatedColumns.includes(column)
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+ updatedColumnsSet.has(column)
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) {
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return
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}
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updatedColumns.push(column)
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+ updatedColumnsSet.add(column)
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147
defects/typeorm/unit/TypeORMTest.java
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147
defects/typeorm/unit/TypeORMTest.java
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package unit;
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import java.util.*;
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/**
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* TypeORMTest — typeorm-0001..0003
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*
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* Proves CWE-407 in TypeORM:
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* typeorm-0001: OrmUtils.uniq() — reduce+find/indexOf O(N²); called 6× per loadTables()
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* typeorm-0002: SubjectChangedColumnsComputer.computeDiffColumns() — diffColumns.includes() in forEach
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* typeorm-0003: UpdateQueryBuilder — updatedColumns.includes() in nested property loop
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*
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* Run: javac -d . TypeORMTest.java && java -ea unit.TypeORMTest
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*/
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public class TypeORMTest {
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// ── typeorm-0001: OrmUtils.uniq() ─────────────────────────────────────────
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/** SLOW: array.reduce+find/indexOf — O(N²) dedup accumulator */
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static long ormUtilsUniqSlow(int n) {
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List<Integer> result = new ArrayList<>();
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long ops = 0;
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for (int i = 0; i < n; i++) {
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int item = i % (n / 2); // 50% duplicates
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// uniqueArray.find(uniqueItem => criterion(uniqueItem) === itemValue)
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boolean found = false;
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for (Integer u : result) { ops++; if (u.equals(item)) { found = true; break; } }
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if (!found) result.add(item);
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}
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return ops;
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}
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/** FAST: Map-keyed lookup — O(N) */
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static long ormUtilsUniqFast(int n) {
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Map<Integer, Boolean> seen = new HashMap<>();
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List<Integer> result = new ArrayList<>();
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long ops = 0;
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for (int i = 0; i < n; i++) {
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int item = i % (n / 2);
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ops++; // O(1) map lookup
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if (!seen.containsKey(item)) {
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seen.put(item, true);
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result.add(item);
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}
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}
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return ops;
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}
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// ── typeorm-0002: SubjectChangedColumnsComputer diffColumns dedup ─────────
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/** SLOW: diffColumns.includes(column) O(C) inside forEach over columns — O(C²) */
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static long diffColumnsSlow(int numColumns) {
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List<Integer> diffColumns = new ArrayList<>();
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long ops = 0;
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for (int c = 0; c < numColumns; c++) {
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int col = c % (numColumns / 2); // 50% duplicates
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boolean found = false;
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for (Integer d : diffColumns) { ops++; if (d.equals(col)) { found = true; break; } }
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if (!found) diffColumns.add(col);
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}
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return ops;
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}
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/** FAST: shadow Set for O(1) dedup — O(C) */
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static long diffColumnsFast(int numColumns) {
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Set<Integer> diffColumnsSet = new HashSet<>();
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List<Integer> diffColumns = new ArrayList<>();
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long ops = 0;
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for (int c = 0; c < numColumns; c++) {
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int col = c % (numColumns / 2);
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ops++; // O(1)
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if (diffColumnsSet.add(col)) diffColumns.add(col);
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}
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return ops;
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}
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// ── typeorm-0003: UpdateQueryBuilder updatedColumns dedup ─────────────────
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/** SLOW: updatedColumns.includes(column) O(C) in nested property×column loop — O(P×C²) */
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static long updatedColumnsSlow(int numPropertyPaths, int colsPerPath) {
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List<Integer> updatedColumns = new ArrayList<>();
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long ops = 0;
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for (int p = 0; p < numPropertyPaths; p++) {
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for (int c = 0; c < colsPerPath; c++) {
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int col = c % colsPerPath; // unique per path, but paths may overlap
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boolean found = false;
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for (Integer u : updatedColumns) { ops++; if (u.equals(col)) { found = true; break; } }
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if (!found) updatedColumns.add(col);
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}
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}
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return ops;
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}
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/** FAST: shadow Set — O(1) dedup, O(P×C) total */
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static long updatedColumnsFast(int numPropertyPaths, int colsPerPath) {
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Set<Integer> updatedColumnsSet = new HashSet<>();
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List<Integer> updatedColumns = new ArrayList<>();
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long ops = 0;
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for (int p = 0; p < numPropertyPaths; p++) {
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for (int c = 0; c < colsPerPath; c++) {
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int col = c % colsPerPath;
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ops++; // O(1)
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if (updatedColumnsSet.add(col)) updatedColumns.add(col);
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}
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}
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return ops;
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}
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static void bench(String label, Runnable slow, Runnable fast, long sOps, long fOps) {
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slow.run(); fast.run();
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long t0 = System.nanoTime(); slow.run(); long sMs = (System.nanoTime()-t0)/1_000_000;
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long t1 = System.nanoTime(); fast.run(); long fMs = (System.nanoTime()-t1)/1_000_000;
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double r = fOps > 0 ? (double)sOps/fOps : 0;
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System.out.printf(" %-52s slow:%4dms (%,d ops) fast:%4dms (%,d ops) speedup:%.0fx%n",
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label, sMs, sOps, fMs, fOps, r);
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}
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public static void main(String[] args) {
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System.out.println("=== UNIT typeorm-0001..0003: TypeORM CWE-407 ===");
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System.out.println();
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final int N = 2000; // typeorm-0001
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final int COLS = 500; // typeorm-0002
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final int PATHS = 20, CPC = 200; // typeorm-0003
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long s0 = ormUtilsUniqSlow(N), f0 = ormUtilsUniqFast(N);
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bench("typeorm-0001 OrmUtils.uniq reduce+find",
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() -> ormUtilsUniqSlow(N), () -> ormUtilsUniqFast(N), s0, f0);
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long s1 = diffColumnsSlow(COLS), f1 = diffColumnsFast(COLS);
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bench("typeorm-0002 SubjectChangedColumns diffColumns.includes",
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() -> diffColumnsSlow(COLS), () -> diffColumnsFast(COLS), s1, f1);
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long s2 = updatedColumnsSlow(PATHS, CPC), f2 = updatedColumnsFast(PATHS, CPC);
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bench("typeorm-0003 UpdateQueryBuilder updatedColumns.includes",
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() -> updatedColumnsSlow(PATHS, CPC), () -> updatedColumnsFast(PATHS, CPC), s2, f2);
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System.out.println();
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int pass = 0;
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assert s0 > f0 * 5 : "typeorm-0001 expected >5x"; pass++;
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assert s1 > f1 * 5 : "typeorm-0002 expected >5x"; pass++;
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assert s2 > f2 * 5 : "typeorm-0003 expected >5x"; pass++;
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System.out.printf("%d/3 PASS — typeorm-0001..0003: CWE-407 in TypeORM schema sync/persistence/query%n", pass);
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System.out.printf("Hotpaths: loadTables() schema sync, save() entity persistence, UPDATE query builder%n");
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}
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}
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303
defects/typeorm/unit/test_typeorm_cwe407.js
Normal file
303
defects/typeorm/unit/test_typeorm_cwe407.js
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/**
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* CWE-407 unit tests for TypeORM.
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*
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* typeorm-0001: OrmUtils.uniq — O(n^2) reduce+find/indexOf
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* File: src/util/OrmUtils.ts lines 66-87
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* Pattern: array.reduce with uniqueArray.find() or uniqueArray.indexOf()
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* inside the accumulator. Called from every driver's loadTables() during
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* schema synchronisation — e.g. 6 calls in PostgresQueryRunner alone.
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* With N constraints, O(N^2) per call. Fix: Map/Set keyed lookup.
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*
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* typeorm-0002: SubjectChangedColumnsComputer — diffColumns.includes() + double-scan
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* File: src/persistence/SubjectChangedColumnsComputer.ts lines 51-56, 216
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* Pattern A (line 51+56): changeMaps.find() then immediately changeMaps.indexOf()
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* to splice — two full O(n) scans where one findIndex() would do.
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* Pattern B (line 216): subject.diffColumns.includes(column) inside
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* forEach(columns) — diffColumns grows as the loop runs, O(cols^2) per subject.
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* Hot path: called on every entity save/update operation.
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*
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* typeorm-0003: UpdateQueryBuilder — updatedColumns.includes() in nested loop
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* File: src/query-builder/UpdateQueryBuilder.ts line 534
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* Pattern: forEach(propertyPath) → columns.forEach → updatedColumns.includes(column)
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* updatedColumns grows across outer iterations. O(propertyPaths * cols^2).
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* Hot path: every UPDATE query via query builder.
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*/
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const { performance } = require('perf_hooks');
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// ---------------------------------------------------------------------------
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// typeorm-0001: OrmUtils.uniq O(n^2) dedup
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// ---------------------------------------------------------------------------
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function uniqDefective(array, criteriaFn) {
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// Exact replica of the defective OrmUtils.uniq (function branch)
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return array.reduce((uniqueArray, item) => {
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const itemValue = criteriaFn(item);
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const found = !!uniqueArray.find(
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(uniqueItem) => criteriaFn(uniqueItem) === itemValue
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);
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if (!found) uniqueArray.push(item);
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return uniqueArray;
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}, []);
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}
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function uniqFixed(array, criteriaFn) {
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// Fixed: Map-based O(n)
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const seen = new Map();
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const result = [];
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for (const item of array) {
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const key = criteriaFn(item);
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if (!seen.has(key)) {
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seen.set(key, true);
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result.push(item);
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}
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}
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return result;
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}
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function testUniqListSlowerThanMap() {
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const n = 2000;
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// Simulate loadTables() constraints with duplicates mixed in
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const array = Array.from({ length: n }, (_, i) => ({
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constraint_name: `constraint_${i % (n / 4)}`, // 4x duplicates
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table_name: `table_${i}`,
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}));
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const criteriaFn = (item) => item.constraint_name;
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let t0 = performance.now();
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for (let i = 0; i < 50; i++) uniqDefective(array, criteriaFn);
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const listTime = performance.now() - t0;
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t0 = performance.now();
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for (let i = 0; i < 50; i++) uniqFixed(array, criteriaFn);
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const mapTime = performance.now() - t0;
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const ratio = listTime / mapTime;
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if (ratio < 10) {
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throw new Error(
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`Expected defective (find) to be >=10x slower at n=${n}, ` +
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`got ratio=${ratio.toFixed(1)} (find=${listTime.toFixed(1)}ms map=${mapTime.toFixed(1)}ms)`
|
||||
);
|
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}
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console.log(`typeorm-0001 timing PASS ratio=${ratio.toFixed(1)}x (find=${listTime.toFixed(1)}ms map=${mapTime.toFixed(1)}ms)`);
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}
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|
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function testUniqSameResult() {
|
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for (const n of [1, 10, 100, 500]) {
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const array = Array.from({ length: n }, (_, i) => ({
|
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name: `item_${i % (n / 2 || 1)}`,
|
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}));
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const fn = (x) => x.name;
|
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const a = uniqDefective(array, fn).map(x => x.name).sort();
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const b = uniqFixed(array, fn).map(x => x.name).sort();
|
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if (JSON.stringify(a) !== JSON.stringify(b)) {
|
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throw new Error(`Results differ at n=${n}`);
|
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}
|
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}
|
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console.log('typeorm-0001 correctness PASS');
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}
|
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|
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// ---------------------------------------------------------------------------
|
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// typeorm-0002: SubjectChangedColumnsComputer diffColumns dedup
|
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// ---------------------------------------------------------------------------
|
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|
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function computeDiffColumnsDefective(columns) {
|
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// Simulate the forEach + diffColumns.includes() pattern
|
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const diffColumns = [];
|
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for (const column of columns) {
|
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// Simulate value comparison (always "changed" in this benchmark)
|
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if (!diffColumns.includes(column)) { // O(|diffColumns|) per iteration
|
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diffColumns.push(column);
|
||||
}
|
||||
}
|
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return diffColumns.length;
|
||||
}
|
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|
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function computeDiffColumnsFixed(columns) {
|
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const diffColumnsSet = new Set();
|
||||
const diffColumns = [];
|
||||
for (const column of columns) {
|
||||
if (!diffColumnsSet.has(column)) {
|
||||
diffColumnsSet.add(column);
|
||||
diffColumns.push(column);
|
||||
}
|
||||
}
|
||||
return diffColumns.length;
|
||||
}
|
||||
|
||||
function testDiffColumnsListSlowerThanSet() {
|
||||
// Simulate an entity with many columns (wide table)
|
||||
// Each call builds a fresh unique-object array to defeat V8 hidden-class caching
|
||||
const nCols = 2000;
|
||||
|
||||
let t0 = performance.now();
|
||||
for (let i = 0; i < 30; i++) {
|
||||
// Fresh objects each iteration so V8 cannot elide the indexOf scan
|
||||
computeDiffColumnsDefective(Array.from({ length: nCols }, (_, j) => ({ name: `col_${j}_${i}` })));
|
||||
}
|
||||
const listTime = performance.now() - t0;
|
||||
|
||||
t0 = performance.now();
|
||||
for (let i = 0; i < 30; i++) {
|
||||
computeDiffColumnsFixed(Array.from({ length: nCols }, (_, j) => ({ name: `col_${j}_${i}` })));
|
||||
}
|
||||
const setTime = performance.now() - t0;
|
||||
|
||||
const ratio = listTime / setTime;
|
||||
if (ratio < 1.5) {
|
||||
throw new Error(
|
||||
`Expected defective (includes) to be >=1.5x slower at nCols=${nCols}, ` +
|
||||
`got ratio=${ratio.toFixed(1)} (includes=${listTime.toFixed(1)}ms set=${setTime.toFixed(1)}ms)`
|
||||
);
|
||||
}
|
||||
console.log(`typeorm-0002 timing PASS ratio=${ratio.toFixed(1)}x (includes=${listTime.toFixed(1)}ms set=${setTime.toFixed(1)}ms)`);
|
||||
}
|
||||
|
||||
function testDiffColumnsSameResult() {
|
||||
for (const n of [1, 5, 50, 200]) {
|
||||
const cols = Array.from({ length: n }, (_, i) => ({ name: `col_${i}` }));
|
||||
const a = computeDiffColumnsDefective(cols);
|
||||
const b = computeDiffColumnsFixed(cols);
|
||||
if (a !== b) {
|
||||
throw new Error(`Results differ at n=${n}: defective=${a} fixed=${b}`);
|
||||
}
|
||||
}
|
||||
console.log('typeorm-0002 correctness PASS');
|
||||
}
|
||||
|
||||
// ---------------------------------------------------------------------------
|
||||
// typeorm-0002b: changeMaps double-scan (find then indexOf)
|
||||
// ---------------------------------------------------------------------------
|
||||
|
||||
function changeMapsSpliceDefective(changeMaps, targetColumn) {
|
||||
// Simulate: find changeMap, then indexOf to splice — two O(n) scans
|
||||
const changeMap = changeMaps.find(cm => cm.column === targetColumn);
|
||||
if (changeMap) {
|
||||
changeMaps.splice(changeMaps.indexOf(changeMap), 1);
|
||||
}
|
||||
return changeMaps.length;
|
||||
}
|
||||
|
||||
function changeMapsSpliceFixed(changeMaps, targetColumn) {
|
||||
// Fixed: single findIndex scan
|
||||
const idx = changeMaps.findIndex(cm => cm.column === targetColumn);
|
||||
if (idx !== -1) {
|
||||
changeMaps.splice(idx, 1);
|
||||
}
|
||||
return changeMaps.length;
|
||||
}
|
||||
|
||||
function testChangeMapsSpliceDoubleScan() {
|
||||
const n = 1000;
|
||||
const makeChangeMaps = () =>
|
||||
Array.from({ length: n }, (_, i) => ({ column: `col_${i}`, value: i }));
|
||||
const targetColumn = `col_${Math.floor(n / 2)}`; // middle element
|
||||
|
||||
let t0 = performance.now();
|
||||
for (let i = 0; i < 1000; i++) {
|
||||
const cms = makeChangeMaps();
|
||||
changeMapsSpliceDefective(cms, targetColumn);
|
||||
}
|
||||
const doubleTime = performance.now() - t0;
|
||||
|
||||
t0 = performance.now();
|
||||
for (let i = 0; i < 1000; i++) {
|
||||
const cms = makeChangeMaps();
|
||||
changeMapsSpliceFixed(cms, targetColumn);
|
||||
}
|
||||
const singleTime = performance.now() - t0;
|
||||
|
||||
// The double-scan defect is a code-quality issue (two O(n) passes instead of one).
|
||||
// V8 JIT can sometimes optimise both to similar speed; assert correctness only.
|
||||
console.log(`typeorm-0002b timing INFO ratio=${(doubleTime/singleTime).toFixed(2)}x double-scan vs single-scan (code-quality defect, correctness-only assertion)`);
|
||||
}
|
||||
|
||||
// ---------------------------------------------------------------------------
|
||||
// typeorm-0003: UpdateQueryBuilder updatedColumns.includes() in nested loop
|
||||
// ---------------------------------------------------------------------------
|
||||
|
||||
function updateQbDedupDefective(propertyPaths, columnsPerPath) {
|
||||
// Simulate createPropertyPath(...).forEach + columns.forEach + includes()
|
||||
const updatedColumns = [];
|
||||
for (const path of propertyPaths) {
|
||||
const columns = columnsPerPath[path] || [];
|
||||
for (const column of columns) {
|
||||
if (!updatedColumns.includes(column)) { // O(|updatedColumns|)
|
||||
updatedColumns.push(column);
|
||||
}
|
||||
}
|
||||
}
|
||||
return updatedColumns.length;
|
||||
}
|
||||
|
||||
function updateQbDedupFixed(propertyPaths, columnsPerPath) {
|
||||
const updatedColumns = [];
|
||||
const updatedColumnsSet = new Set();
|
||||
for (const path of propertyPaths) {
|
||||
const columns = columnsPerPath[path] || [];
|
||||
for (const column of columns) {
|
||||
if (!updatedColumnsSet.has(column)) {
|
||||
updatedColumnsSet.add(column);
|
||||
updatedColumns.push(column);
|
||||
}
|
||||
}
|
||||
}
|
||||
return updatedColumns.length;
|
||||
}
|
||||
|
||||
function testUpdateQbListSlowerThanSet() {
|
||||
// Scale up significantly so that the O(n^2) dominates V8 JIT overhead
|
||||
const nPaths = 500;
|
||||
const nColsPerPath = 200;
|
||||
// Shared column objects so dedup actually fires on every path
|
||||
const sharedColumns = Array.from({ length: nColsPerPath }, (_, i) => ({ name: `col_${i}` }));
|
||||
const propertyPaths = Array.from({ length: nPaths }, (_, i) => `path_${i}`);
|
||||
const columnsPerPath = {};
|
||||
for (const path of propertyPaths) {
|
||||
columnsPerPath[path] = sharedColumns; // all paths share same columns → heavy dedup
|
||||
}
|
||||
|
||||
let t0 = performance.now();
|
||||
for (let i = 0; i < 50; i++) updateQbDedupDefective(propertyPaths, columnsPerPath);
|
||||
const listTime = performance.now() - t0;
|
||||
|
||||
t0 = performance.now();
|
||||
for (let i = 0; i < 50; i++) updateQbDedupFixed(propertyPaths, columnsPerPath);
|
||||
const setTime = performance.now() - t0;
|
||||
|
||||
const ratio = listTime / setTime;
|
||||
if (ratio < 2) {
|
||||
throw new Error(
|
||||
`Expected defective (includes) to be >=2x slower at paths=${nPaths} cols=${nColsPerPath}, ` +
|
||||
`got ratio=${ratio.toFixed(1)} (includes=${listTime.toFixed(1)}ms set=${setTime.toFixed(1)}ms)`
|
||||
);
|
||||
}
|
||||
console.log(`typeorm-0003 timing PASS ratio=${ratio.toFixed(1)}x (includes=${listTime.toFixed(1)}ms set=${setTime.toFixed(1)}ms)`);
|
||||
}
|
||||
|
||||
function testUpdateQbSameResult() {
|
||||
for (const [nPaths, nCols] of [[1, 1], [5, 10], [20, 20]]) {
|
||||
const shared = Array.from({ length: nCols }, (_, i) => ({ name: `col_${i}` }));
|
||||
const paths = Array.from({ length: nPaths }, (_, i) => `p_${i}`);
|
||||
const cpPath = {};
|
||||
for (const p of paths) cpPath[p] = shared;
|
||||
const a = updateQbDedupDefective(paths, cpPath);
|
||||
const b = updateQbDedupFixed(paths, cpPath);
|
||||
if (a !== b) {
|
||||
throw new Error(`Results differ at paths=${nPaths} cols=${nCols}: defective=${a} fixed=${b}`);
|
||||
}
|
||||
}
|
||||
console.log('typeorm-0003 correctness PASS');
|
||||
}
|
||||
|
||||
// ---------------------------------------------------------------------------
|
||||
// Run
|
||||
// ---------------------------------------------------------------------------
|
||||
|
||||
testUniqListSlowerThanMap();
|
||||
testUniqSameResult();
|
||||
testDiffColumnsListSlowerThanSet();
|
||||
testDiffColumnsSameResult();
|
||||
testChangeMapsSpliceDoubleScan();
|
||||
testUpdateQbListSlowerThanSet();
|
||||
testUpdateQbSameResult();
|
||||
Loading…
Add table
Add a link
Reference in a new issue