| // 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.findindex |
| description: > |
| Predicate called as F.call( thisArg, kValue, k, O ) for each array entry. |
| info: | |
| 22.2.3.11 %TypedArray%.prototype.findIndex ( predicate [ , thisArg ] ) |
| |
| %TypedArray%.prototype.findIndex is a distinct function that implements the |
| same algorithm as Array.prototype.findIndex as defined in 22.1.3.9 except that |
| the this object's [[ArrayLength]] internal slot is accessed in place of |
| performing a [[Get]] of "length". |
| |
| ... |
| |
| 22.1.3.9 Array.prototype.findIndex ( predicate[ , thisArg ] ) |
| |
| ... |
| 4. If thisArg was supplied, let T be thisArg; else let T be undefined. |
| 5. Let k be 0. |
| 6. Repeat, while k < len |
| ... |
| c. Let testResult be ToBoolean(? Call(predicate, T, « kValue, k, O »)). |
| ... |
| includes: [testTypedArray.js] |
| features: [TypedArray] |
| ---*/ |
| |
| testWithTypedArrayConstructors(function(TA) { |
| var sample = new TA([39, 2, 62]); |
| var results = []; |
| var result; |
| |
| sample.foo = "bar"; // Ignores non integer index properties |
| |
| sample.findIndex(function() { |
| results.push(arguments); |
| }); |
| |
| assert.sameValue(results.length, 3, "predicate is called for each index"); |
| |
| result = results[0]; |
| assert.sameValue(result[0], 39, "results[0][0] === 39, value"); |
| assert.sameValue(result[1], 0, "results[0][1] === 0, index"); |
| assert.sameValue(result[2], sample, "results[0][2] === sample, instance"); |
| assert.sameValue(result.length, 3, "results[0].length === 3, arguments"); |
| |
| result = results[1]; |
| assert.sameValue(result[0], 2, "results[1][0] === 2, value"); |
| assert.sameValue(result[1], 1, "results[1][1] === 1, index"); |
| assert.sameValue(result[2], sample, "results[1][2] === sample, instance"); |
| assert.sameValue(result.length, 3, "results[1].length === 3, arguments"); |
| |
| result = results[2]; |
| assert.sameValue(result[0], 62, "results[2][0] === 62, value"); |
| assert.sameValue(result[1], 2, "results[2][1] === 2, index"); |
| assert.sameValue(result[2], sample, "results[2][2] === sample, instance"); |
| assert.sameValue(result.length, 3, "results[2].length === 3, arguments"); |
| }); |