| // 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-typedarray-object |
| description: > |
| Return typedArray from object argument |
| info: | |
| 22.2.4.4 TypedArray ( object ) |
| |
| This description applies only if the TypedArray function is called with at |
| least one argument and the Type of the first argument is Object and that |
| object does not have either a [[TypedArrayName]] or an [[ArrayBufferData]] |
| internal slot. |
| |
| includes: [testTypedArray.js] |
| features: [Symbol, TypedArray] |
| ---*/ |
| |
| var obj = { |
| "0": null, |
| "2": 42, |
| "3": "7", |
| "4": NaN, |
| "5": Symbol("1"), |
| length: 5 |
| }; |
| |
| testWithTypedArrayConstructors(function(TA) { |
| var typedArray = new TA(obj); |
| assert.sameValue(typedArray.length, 5); |
| assert.sameValue(typedArray[0], 0); |
| assert.sameValue(typedArray[2], 42); |
| assert.sameValue(typedArray[3], 7); |
| assert.sameValue(typedArray[5], undefined); |
| assert.sameValue(typedArray.constructor, TA); |
| assert.sameValue(Object.getPrototypeOf(typedArray), TA.prototype); |
| |
| if (TA === Float32Array || TA === Float64Array) { |
| assert.sameValue(typedArray[1], NaN); |
| assert.sameValue(typedArray[4], NaN); |
| } else { |
| assert.sameValue(typedArray[1], 0); |
| assert.sameValue(typedArray[4], 0); |
| } |
| }); |