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Diffstat (limited to 'js/src/tests/test262/built-ins/FinalizationRegistry/prototype/register/custom-this.js')
-rw-r--r-- | js/src/tests/test262/built-ins/FinalizationRegistry/prototype/register/custom-this.js | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/FinalizationRegistry/prototype/register/custom-this.js b/js/src/tests/test262/built-ins/FinalizationRegistry/prototype/register/custom-this.js new file mode 100644 index 0000000000..fa1df025da --- /dev/null +++ b/js/src/tests/test262/built-ins/FinalizationRegistry/prototype/register/custom-this.js @@ -0,0 +1,31 @@ +// |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.register +description: Return undefined (applying custom this) +info: | + FinalizationRegistry.prototype.register ( target , holdings [, unregisterToken ] ) + + 1. Let finalizationRegistry be the this value. + 2. If Type(finalizationRegistry) is not Object, throw a TypeError exception. + 3. If Type(target) is not Object, throw a TypeError exception. + 4. If finalizationRegistry does not have a [[Cells]] internal slot, throw a TypeError exception. + 5. If Type(unregisterToken) is not Object, + a. If unregisterToken is not undefined, throw a TypeError exception. + b. Set unregisterToken to empty. + 6. Let cell be the Record { [[Target]] : target, [[Holdings]]: holdings, [[UnregisterToken]]: unregisterToken }. + 7. Append cell to finalizationRegistry.[[Cells]]. + 8. Return undefined. +features: [FinalizationRegistry] +---*/ + +var fn = function() {}; +var register = FinalizationRegistry.prototype.register; +var finalizationRegistry = new FinalizationRegistry(fn); + +var target = {}; +assert.sameValue(register.call(finalizationRegistry, target), undefined); + +reportCompare(0, 0); |