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Diffstat (limited to 'js/src/tests/test262/built-ins/FinalizationRegistry/prototype/unregister/custom-this.js')
-rw-r--r-- | js/src/tests/test262/built-ins/FinalizationRegistry/prototype/unregister/custom-this.js | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/FinalizationRegistry/prototype/unregister/custom-this.js b/js/src/tests/test262/built-ins/FinalizationRegistry/prototype/unregister/custom-this.js new file mode 100644 index 0000000000..ac7157940e --- /dev/null +++ b/js/src/tests/test262/built-ins/FinalizationRegistry/prototype/unregister/custom-this.js @@ -0,0 +1,50 @@ +// |reftest| skip-if(!this.hasOwnProperty('FinalizationRegistry')) -- 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.unregister +description: Return values applying custom this +info: | + FinalizationRegistry.prototype.unregister ( unregisterToken ) + + 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 Type(unregisterToken) is not Object, throw a TypeError exception. + 5. Let removed be false. + 6. For each Record { [[Target]], [[Holdings]], [[UnregisterToken]] } cell that is an element of finalizationRegistry.[[Cells]], do + a. If SameValue(cell.[[UnregisterToken]], unregisterToken) is true, then + i. Remove cell from finalizationRegistry.[[Cells]]. + ii. Set removed to true. + 7. Return removed. +features: [FinalizationRegistry] +---*/ + +var fn = function() {}; +var unregister = FinalizationRegistry.prototype.unregister; +var finalizationRegistry = new FinalizationRegistry(fn); + +var target1 = {}; +var target2 = {}; +var target3 = {}; +var token1 = {}; +var token2 = {}; + +assert.sameValue(unregister.call(finalizationRegistry, token1), false, 'unregistering token1 from empty finalizationRegistry'); +assert.sameValue(unregister.call(finalizationRegistry, token2), false, 'unregistering token2 from empty finalizationRegistry'); + +finalizationRegistry.register(target1, undefined, token1); +finalizationRegistry.register(target2, undefined, token2); +finalizationRegistry.register(target3, undefined, token2); + +assert.sameValue(unregister.call(finalizationRegistry, target1), false, 'own target does not work on unregister, #1'); +assert.sameValue(unregister.call(finalizationRegistry, target2), false, 'own target does not work on unregister, #2'); +assert.sameValue(unregister.call(finalizationRegistry, target3), false, 'own target does not work on unregister, #3'); + +assert.sameValue(unregister.call(finalizationRegistry, token1), true, 'unregistering token1 from finalizationRegistry'); +assert.sameValue(unregister.call(finalizationRegistry, token1), false, 'unregistering token1 again from finalizationRegistry'); +assert.sameValue(unregister.call(finalizationRegistry, token2), true, 'unregistering token2 to remove target2 and target3'); +assert.sameValue(unregister.call(finalizationRegistry, token2), false, 'unregistering token2 from empty finalizationRegistry'); + +reportCompare(0, 0); |