Strict mode Passingnon-Strict mode Passing
Features:
- align-detached-buffer-semantics-with-web-reality
- BigInt
- TypedArray
// Copyright (C) 2020 Rick Waldron. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-%typedarray%.prototype.indexof
description: Throws a TypeError if this has a detached buffer
info: |
%TypedArray%.prototype.indexOf ( searchElement [ , fromIndex ] )
The interpretation and use of the arguments of %TypedArray%.prototype.indexOf are the same as for Array.prototype.indexOf as defined in 22.1.3.14.
When the indexOf method is called with one or two arguments, the following steps are taken:
Let O be the this value.
Perform ? ValidateTypedArray(O).
Let len be O.[[ArrayLength]].
If len is 0, return -1F.
Let n be ? ToIntegerOrInfinity(fromIndex).
Assert: If fromIndex is undefined, then n is 0.
If n is +∞, return -1F.
Else if n is -∞, set n to 0.
If n ≥ 0, then
Let k be n.
Else,
Let k be len + n.
If k < 0, set k to 0.
Repeat, while k < len,
Let kPresent be ! HasProperty(O, ! ToString(F(k))).
If kPresent is true, then
Let elementK be ! Get(O, ! ToString(F(k))).
Let same be the result of performing Strict Equality Comparison searchElement === elementK.
If same is true, return F(k).
Set k to k + 1.
Return -1F.
includes: [testBigIntTypedArray.js, detachArrayBuffer.js]
features: [align-detached-buffer-semantics-with-web-reality, BigInt, TypedArray]
---*/
testWithBigIntTypedArrayConstructors(function(TA) {
const sample = new TA(1);
const fromIndex = {
valueOf() {
$DETACHBUFFER(sample.buffer);
return 0;
}
};
assert.sameValue(sample.indexOf(undefined, fromIndex), -1);
});