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// |reftest| skip-if(!this.hasOwnProperty('FinalizationRegistry')) async -- FinalizationRegistry is not enabled unconditionally
// Copyright (C) 2019 Leo Balter. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-finalization-registry.prototype.cleanupSome
description: Cleanup might be prevented with a reference usage;
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.
features: [FinalizationRegistry.prototype.cleanupSome, FinalizationRegistry, host-gc-required]
includes: [async-gc.js]
flags: [async, non-deterministic]
---*/
var holdingsList = [];
function cb(holding) {
holdingsList.push(holding);
};
var finalizationRegistry = new FinalizationRegistry(function() {});
var referenced = {};
function emptyCells() {
var target = {};
finalizationRegistry.register(target, 'target!');
finalizationRegistry.register(referenced, 'referenced');
var prom = asyncGC(target);
target = null;
return prom;
}
emptyCells().then(function() {
finalizationRegistry.cleanupSome(cb);
assert.sameValue(holdingsList.length, 1);
assert.sameValue(holdingsList[0], 'target!');
assert.sameValue(typeof referenced, 'object', 'referenced preserved');
}).then($DONE, resolveAsyncGC);
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