| // 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 abrupt from ToInteger(fromIndex) - using symbol |
| 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, Symbol, TypedArray] |
| ---*/ |
| |
| var fromIndex = Symbol("1"); |
| |
| testWithBigIntTypedArrayConstructors(function(TA) { |
| var sample = new TA(1); |
| |
| assert.throws(TypeError, function() { |
| sample.lastIndexOf(7n, fromIndex); |
| }); |
| }); |