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Diffstat (limited to 'js/src/tests/test262/built-ins/TypedArrayConstructors/internals/DefineOwnProperty/BigInt/tonumber-value-detached-buffer.js')
-rw-r--r-- | js/src/tests/test262/built-ins/TypedArrayConstructors/internals/DefineOwnProperty/BigInt/tonumber-value-detached-buffer.js | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/internals/DefineOwnProperty/BigInt/tonumber-value-detached-buffer.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/internals/DefineOwnProperty/BigInt/tonumber-value-detached-buffer.js new file mode 100644 index 0000000000..c10b7a5579 --- /dev/null +++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/internals/DefineOwnProperty/BigInt/tonumber-value-detached-buffer.js @@ -0,0 +1,61 @@ +// Copyright (C) 2017 Mozilla Corporation. All rights reserved. +// This code is governed by the BSD license found in the LICENSE file. +/*--- +esid: sec-integer-indexed-exotic-objects-defineownproperty-p-desc +description: > + Defining a typed array element to a value that, when converted to the typed + array element type, detaches the typed array's underlying buffer, should return + true and not modify the typed array. +info: | + 9.4.5.3 [[DefineOwnProperty]] ( P, Desc ) + + ... + 3. If Type(P) is String, then + a. Let numericIndex be ! CanonicalNumericIndexString(P). + b. If numericIndex is not undefined, then + ... + x. If Desc has a [[Value]] field, then + 1. Let value be Desc.[[Value]]. + 2. Return ? IntegerIndexedElementSet(O, numericIndex, value). + ... + + IntegerIndexedElementSet ( O, index, value ) + + Assert: O is an Integer-Indexed exotic object. + If O.[[ContentType]] is BigInt, let numValue be ? ToBigInt(value). + Otherwise, let numValue be ? ToNumber(value). + Let buffer be O.[[ViewedArrayBuffer]]. + If IsDetachedBuffer(buffer) is false and ! IsValidIntegerIndex(O, index) is true, then + Let offset be O.[[ByteOffset]]. + Let arrayTypeName be the String value of O.[[TypedArrayName]]. + Let elementSize be the Element Size value specified in Table 62 for arrayTypeName. + Let indexedPosition be (ℝ(index) × elementSize) + offset. + Let elementType be the Element Type value in Table 62 for arrayTypeName. + Perform SetValueInBuffer(buffer, indexedPosition, elementType, numValue, true, Unordered). + Return NormalCompletion(undefined). + +includes: [testBigIntTypedArray.js, detachArrayBuffer.js] +features: [align-detached-buffer-semantics-with-web-reality, BigInt, Reflect, TypedArray] +---*/ +testWithBigIntTypedArrayConstructors(function(TA) { + var ta = new TA([17n]); + + var desc = { + value: { + valueOf() { + $DETACHBUFFER(ta.buffer); + return 42n; + } + } + }; + + assert.sameValue( + Reflect.defineProperty(ta, 0, desc), + true, + 'Reflect.defineProperty(ta, 0, {value: {valueOf() {$DETACHBUFFER(ta.buffer); return 42n;}}}) must return true' + ); + + assert.sameValue(ta[0], undefined, 'The value of ta[0] is expected to equal `undefined`'); +}); + +reportCompare(0, 0); |