| // Copyright (C) 2016 the V8 project authors. 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: > |
| Returns true after setting a valid numeric index key |
| 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 [[Writable]] field and if Desc.[[Writable]] is false, |
| return false. |
| ... |
| includes: [testTypedArray.js, propertyHelper.js] |
| features: [Reflect, TypedArray] |
| ---*/ |
| |
| testWithTypedArrayConstructors(function(TA) { |
| var sample = new TA([42, 42]); |
| |
| assert.sameValue( |
| Reflect.defineProperty(sample, "0", { |
| value: 8, |
| configurable: false, |
| enumerable: true, |
| writable: true |
| }), |
| true |
| ); |
| |
| assert.sameValue(sample[0], 8, "property value was set"); |
| var desc = Object.getOwnPropertyDescriptor(sample, "0"); |
| |
| assert.sameValue(desc.value, 8, "desc.value"); |
| assert.sameValue(desc.writable, true, "property is writable"); |
| |
| verifyEnumerable(sample, "0"); |
| verifyNotConfigurable(sample, "0"); |
| }); |