| // Copyright (C) 2019 Leo Balter. All rights reserved. |
| // This code is governed by the BSD license found in the LICENSE file. |
| |
| /*--- |
| esid: sec-properties-of-the-finalization-group-constructor |
| description: > |
| Throws a TypeError if [[IsFinalizationGroupCleanupJobActive]] is false |
| info: | |
| FinalizationGroup.prototype.cleanupSome ( [ callback ] ) |
| |
| 1. Let finalizationGroup be the this value. |
| ... |
| 5. Perform ! CleanupFinalizationGroup(finalizationGroup, callback). |
| ... |
| |
| CleanupFinalizationGroup ( finalizationGroup [ , callback ] ) |
| |
| ... |
| 3. Let iterator be ! CreateFinalizationGroupCleanupIterator(finalizationGroup). |
| ... |
| 5. Set finalizationGroup.[[IsFinalizationGroupCleanupJobActive]] to true. |
| 6. Let result be Call(callback, undefined, « iterator »). |
| 7. Set finalizationGroup.[[IsFinalizationGroupCleanupJobActive]] to false. |
| ... |
| |
| %FinalizationGroupCleanupIteratorPrototype%.next ( ) |
| |
| 1. Let iterator be the this value. |
| 2. If Type(iterator) is not Object, throw a TypeError exception. |
| 3. If iterator does not have a [[FinalizationGroup]] internal slot, throw a TypeError exception. |
| features: [FinalizationGroup, WeakRef, host-gc-required, Symbol] |
| includes: [async-gc.js] |
| flags: [async, non-deterministic] |
| ---*/ |
| |
| var iter; |
| var FinalizationGroupCleanupIteratorPrototype; |
| var called = 0; |
| var fg = new FinalizationGroup(function() {}); |
| |
| function callback(iterator) { |
| called += 1; |
| iter = iterator; |
| FinalizationGroupCleanupIteratorPrototype = Object.getPrototypeOf(iterator); |
| } |
| |
| function emptyCells() { |
| var target = {}; |
| fg.register(target, 'target'); |
| |
| var prom = asyncGC(target); |
| target = null; |
| |
| return prom; |
| } |
| |
| emptyCells().then(function() { |
| fg.cleanupSome(callback); |
| |
| // Make sure everything is set |
| assert.sameValue(called, 1, 'cleanup successful'); |
| assert.sameValue(typeof iter, 'object'); |
| assert.sameValue(Object.getPrototypeOf(iter), FinalizationGroupCleanupIteratorPrototype); |
| |
| // To the actual assertion |
| assert.throws(TypeError, function() { |
| iter.next(); |
| }, 'Iter should fail if not called during the cleanupSome call'); |
| }).then($DONE, resolveAsyncGC); |