| // 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.lastindexof |
| description: Return -1 if fromIndex >= ArrayLength - converted values |
| info: | |
| 22.2.3.17 %TypedArray%.prototype.lastIndexOf ( searchElement [ , fromIndex ] ) |
| |
| %TypedArray%.prototype.lastIndexOf is a distinct function that implements the |
| same algorithm as Array.prototype.lastIndexOf as defined in 22.1.3.15 except |
| that the this object's [[ArrayLength]] internal slot is accessed in place of |
| performing a [[Get]] of "length". |
| |
| 22.1.3.15 Array.prototype.lastIndexOf ( searchElement [ , fromIndex ] ) |
| |
| ... |
| 4. If argument fromIndex was passed, let n be ? ToInteger(fromIndex); else let |
| n be len-1. |
| ... |
| includes: [testBigIntTypedArray.js] |
| features: [BigInt, TypedArray] |
| ---*/ |
| |
| var obj = { |
| valueOf: function() { |
| return 1; |
| } |
| }; |
| |
| testWithBigIntTypedArrayConstructors(function(TA) { |
| var sample; |
| |
| sample = new TA([42n, 43n]); |
| assert.sameValue(sample.lastIndexOf(42n, "1"), 0, "string [0]"); |
| assert.sameValue(sample.lastIndexOf(43n, "1"), 1, "string [1]"); |
| |
| assert.sameValue(sample.lastIndexOf(42n, true), 0, "true [0]"); |
| assert.sameValue(sample.lastIndexOf(43n, true), 1, "true [1]"); |
| |
| assert.sameValue(sample.lastIndexOf(42n, false), 0, "false [0]"); |
| assert.sameValue(sample.lastIndexOf(43n, false), -1, "false [1]"); |
| |
| assert.sameValue(sample.lastIndexOf(42n, NaN), 0, "NaN [0]"); |
| assert.sameValue(sample.lastIndexOf(43n, NaN), -1, "NaN [1]"); |
| |
| assert.sameValue(sample.lastIndexOf(42n, null), 0, "null [0]"); |
| assert.sameValue(sample.lastIndexOf(43n, null), -1, "null [1]"); |
| |
| assert.sameValue(sample.lastIndexOf(42n, undefined), 0, "undefined [0]"); |
| assert.sameValue(sample.lastIndexOf(43n, undefined), -1, "undefined [1]"); |
| |
| assert.sameValue(sample.lastIndexOf(42n, null), 0, "null [0]"); |
| assert.sameValue(sample.lastIndexOf(43n, null), -1, "null [1]"); |
| |
| assert.sameValue(sample.lastIndexOf(42n, obj), 0, "object [0]"); |
| assert.sameValue(sample.lastIndexOf(43n, obj), 1, "object [1]"); |
| }); |