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bf31d3c3b1
Fixes: https://github.com/nodejs/node/issues/36246 PR-URL: https://github.com/nodejs/node/pull/36248 Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com> Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com> Reviewed-By: Luigi Pinca <luigipinca@gmail.com> Reviewed-By: Yongsheng Zhang <zyszys98@gmail.com> Reviewed-By: Rich Trott <rtrott@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com>
96 lines
2.2 KiB
JavaScript
96 lines
2.2 KiB
JavaScript
// Flags: --expose-gc --expose-internals
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'use strict';
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require('../common');
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const { deepStrictEqual, strictEqual } = require('assert');
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const { IterableWeakMap } = require('internal/util/iterable_weak_map');
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// It drops entry if a reference is no longer held.
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{
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const wm = new IterableWeakMap();
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const _cache = {
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moduleA: {},
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moduleB: {},
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moduleC: {},
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};
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wm.set(_cache.moduleA, 'hello');
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wm.set(_cache.moduleB, 'discard');
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wm.set(_cache.moduleC, 'goodbye');
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delete _cache.moduleB;
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setImmediate(() => {
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_cache; // eslint-disable-line no-unused-expressions
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globalThis.gc();
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const values = [...wm];
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deepStrictEqual(values, ['hello', 'goodbye']);
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});
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}
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// It updates an existing entry, if the same key is provided twice.
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{
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const wm = new IterableWeakMap();
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const _cache = {
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moduleA: {},
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moduleB: {},
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};
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wm.set(_cache.moduleA, 'hello');
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wm.set(_cache.moduleB, 'goodbye');
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wm.set(_cache.moduleB, 'goodnight');
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const values = [...wm];
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deepStrictEqual(values, ['hello', 'goodnight']);
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}
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// It allows entry to be deleted by key.
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{
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const wm = new IterableWeakMap();
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const _cache = {
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moduleA: {},
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moduleB: {},
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moduleC: {},
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};
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wm.set(_cache.moduleA, 'hello');
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wm.set(_cache.moduleB, 'discard');
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wm.set(_cache.moduleC, 'goodbye');
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wm.delete(_cache.moduleB);
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const values = [...wm];
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deepStrictEqual(values, ['hello', 'goodbye']);
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}
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// It handles delete for key that does not exist.
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{
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const wm = new IterableWeakMap();
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const _cache = {
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moduleA: {},
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moduleB: {},
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moduleC: {},
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};
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wm.set(_cache.moduleA, 'hello');
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wm.set(_cache.moduleC, 'goodbye');
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wm.delete(_cache.moduleB);
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const values = [...wm];
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deepStrictEqual(values, ['hello', 'goodbye']);
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}
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// It allows an entry to be fetched by key.
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{
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const wm = new IterableWeakMap();
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const _cache = {
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moduleA: {},
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moduleB: {},
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moduleC: {},
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};
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wm.set(_cache.moduleA, 'hello');
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wm.set(_cache.moduleB, 'discard');
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wm.set(_cache.moduleC, 'goodbye');
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strictEqual(wm.get(_cache.moduleB), 'discard');
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}
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// It returns true for has() if key exists.
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{
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const wm = new IterableWeakMap();
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const _cache = {
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moduleA: {},
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};
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wm.set(_cache.moduleA, 'hello');
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strictEqual(wm.has(_cache.moduleA), true);
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}
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