| // 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%.prototype.foreach |
| description: > |
| Integer indexed values changed during iteration |
| info: | |
| 22.2.3.12 %TypedArray%.prototype.forEach ( callbackfn [ , thisArg ] ) |
| |
| %TypedArray%.prototype.forEach is a distinct function that implements the same |
| algorithm as Array.prototype.forEach as defined in 22.1.3.10 except that the |
| this object's [[ArrayLength]] internal slot is accessed in place of performing |
| a [[Get]] of "length" |
| includes: [testTypedArray.js] |
| features: [Reflect.set, TypedArray] |
| ---*/ |
| |
| testWithTypedArrayConstructors(function(TA) { |
| var sample = new TA([42, 43, 44]); |
| var newVal = 0; |
| |
| sample.forEach(function(val, i) { |
| if (i > 0) { |
| assert.sameValue( |
| sample[i - 1], newVal - 1, |
| "get the changed value during the loop" |
| ); |
| assert.sameValue( |
| Reflect.set(sample, 0, 7), |
| true, |
| "re-set a value for sample[0]" |
| ); |
| } |
| assert.sameValue( |
| Reflect.set(sample, i, newVal), |
| true, |
| "set value during iteration" |
| ); |
| |
| newVal++; |
| }); |
| |
| assert.sameValue(sample[0], 7, "changed values after iteration [0] == 7"); |
| assert.sameValue(sample[1], 1, "changed values after iteration [1] == 1"); |
| assert.sameValue(sample[2], 2, "changed values after iteration [2] == 2"); |
| }); |