| // 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.includes |
| description: get the integer value from fromIndex |
| info: | |
| 22.2.3.13 %TypedArray%.prototype.includes ( searchElement [ , fromIndex ] ) |
| |
| %TypedArray%.prototype.includes is a distinct function that implements the |
| same algorithm as Array.prototype.includes as defined in 22.1.3.11 except that |
| the this object's [[ArrayLength]] internal slot is accessed in place of |
| performing a [[Get]] of "length". |
| |
| 22.1.3.11 Array.prototype.includes ( searchElement [ , fromIndex ] ) |
| |
| ... |
| 4. Let n be ? ToInteger(fromIndex). (If fromIndex is undefined, this step |
| produces the value 0.) |
| 5. If n ≥ 0, then |
| a. Let k be n. |
| ... |
| 7. Repeat, while k < len |
| a. Let elementK be the result of ? Get(O, ! ToString(k)). |
| b. If SameValueZero(searchElement, elementK) is true, return true. |
| c. Increase k by 1. |
| 8. Return false. |
| includes: [testTypedArray.js] |
| features: [TypedArray] |
| ---*/ |
| |
| var obj = { |
| valueOf: function() { |
| return 1; |
| } |
| }; |
| |
| testWithTypedArrayConstructors(function(TA) { |
| var sample; |
| |
| sample = new TA([42, 43]); |
| assert.sameValue(sample.includes(42, "1"), false, "string [0]"); |
| assert.sameValue(sample.includes(43, "1"), true, "string [1]"); |
| |
| assert.sameValue(sample.includes(42, true), false, "true [0]"); |
| assert.sameValue(sample.includes(43, true), true, "true [1]"); |
| |
| assert.sameValue(sample.includes(42, false), true, "false [0]"); |
| assert.sameValue(sample.includes(43, false), true, "false [1]"); |
| |
| assert.sameValue(sample.includes(42, NaN), true, "NaN [0]"); |
| assert.sameValue(sample.includes(43, NaN), true, "NaN [1]"); |
| |
| assert.sameValue(sample.includes(42, null), true, "null [0]"); |
| assert.sameValue(sample.includes(43, null), true, "null [1]"); |
| |
| assert.sameValue(sample.includes(42, undefined), true, "undefined [0]"); |
| assert.sameValue(sample.includes(43, undefined), true, "undefined [1]"); |
| |
| assert.sameValue(sample.includes(42, null), true, "null [0]"); |
| assert.sameValue(sample.includes(43, null), true, "null [1]"); |
| |
| assert.sameValue(sample.includes(42, obj), false, "object [0]"); |
| assert.sameValue(sample.includes(43, obj), true, "object [1]"); |
| }); |