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|
// META: script=/common/gc.js
// META: script=resources/maybe-garbage-collect.js
// ├──> maybeGarbageCollectAndCleanupAsync
// └──> resolveGarbageCollection
/*---
esid: sec-finalization-registry.prototype.cleanupSome
info: |
FinalizationRegistry.prototype.cleanupSome ( [ callback ] )
1. Let finalizationRegistry be the this value.
2. If Type(finalizationRegistry) is not Object, throw a TypeError exception.
3. If finalizationRegistry does not have a [[Cells]] internal slot, throw a TypeError exception.
4. If callback is not undefined and IsCallable(callback) is false, throw a TypeError exception.
5. Perform ? CleanupFinalizationRegistry(finalizationRegistry, callback).
6. Return undefined.
---*/
let called;
let fn = function() {
called += 1;
return 39;
};
let cb = function() {
called += 1;
return 42;
};
let finalizationRegistry = new FinalizationRegistry(fn);
function emptyCells() {
let target = {};
finalizationRegistry.register(target);
let prom = maybeGarbageCollectAndCleanupAsync(target);
target = null;
return prom;
}
promise_test(() => {
return (async () => {
assert_implements(
typeof FinalizationRegistry.prototype.cleanupSome === 'function',
'FinalizationRegistry.prototype.cleanupSome is not implemented.'
);
await emptyCells();
called = 0;
assert_equals(finalizationRegistry.cleanupSome(cb), undefined, 'regular callback');
assert_equals(called, 1);
await emptyCells();
called = 0;
assert_equals(finalizationRegistry.cleanupSome(fn), undefined, 'regular callback, same FG cleanup function');
assert_equals(called, 1);
await emptyCells();
called = 0;
assert_equals(finalizationRegistry.cleanupSome(), undefined, 'undefined (implicit) callback, defer to FB callback');
assert_equals(called, 1);
await emptyCells();
called = 0;
assert_equals(finalizationRegistry.cleanupSome(undefined), undefined, 'undefined (explicit) callback, defer to FB callback');
assert_equals(called, 1);
await emptyCells();
assert_equals(finalizationRegistry.cleanupSome(() => 1), undefined, 'arrow function');
await emptyCells();
assert_equals(finalizationRegistry.cleanupSome(async function() {}), undefined, 'async function');
await emptyCells();
assert_equals(finalizationRegistry.cleanupSome(function *() {}), undefined, 'generator');
await emptyCells();
assert_equals(finalizationRegistry.cleanupSome(async function *() {}), undefined, 'async generator');
})().catch(resolveGarbageCollection);
}, 'Return undefined regardless the result of CleanupFinalizationRegistry');
|
