| // 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.find |
| description: > |
| Verify predicate this on non-strict mode |
| info: | |
| 22.2.3.10 %TypedArray%.prototype.find (predicate [ , thisArg ] ) |
| |
| %TypedArray%.prototype.find is a distinct function that implements the same |
| algorithm as Array.prototype.find as defined in 22.1.3.8 except that the this |
| object's [[ArrayLength]] internal slot is accessed in place of performing a |
| [[Get]] of "length". The implementation of the algorithm may be optimized with |
| the knowledge that the this value is an object that has a fixed length and |
| whose integer indexed properties are not sparse. |
| |
| ... |
| |
| 22.1.3.8 Array.prototype.find ( predicate[ , thisArg ] ) |
| |
| ... |
| 4. If thisArg was supplied, let T be thisArg; else let T be undefined. |
| ... |
| 6. Repeat, while k < len |
| ... |
| c. Let testResult be ToBoolean(? Call(predicate, T, « kValue, k, O »)). |
| ... |
| flags: [noStrict] |
| includes: [testTypedArray.js] |
| features: [TypedArray] |
| ---*/ |
| |
| var T = this; |
| |
| testWithTypedArrayConstructors(function(TA) { |
| var sample = new TA(1); |
| var result; |
| |
| sample.find(function() { |
| result = this; |
| }); |
| |
| assert.sameValue(result, T, "without thisArg, predicate this is the global"); |
| |
| result = null; |
| sample.find(function() { |
| result = this; |
| }, undefined); |
| |
| assert.sameValue(result, T, "predicate this is the global when thisArg is undefined"); |
| |
| var o = {}; |
| result = null; |
| sample.find(function() { |
| result = this; |
| }, o); |
| |
| assert.sameValue(result, o, "thisArg becomes the predicate this"); |
| }); |