// Copyright (C) 2021 Microsoft. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-%typedarray%.prototype.findlastindex
description: >
Predicate may detach the buffer
info: |
%TypedArray%.prototype.findLastIndex ( predicate [ , thisArg ] )
...
6. Repeat, while k ≥ 0,
a. Let Pk be ! ToString(𝔽(k)).
b. Let kValue be ! Get(O, Pk).
c. Let testResult be ! ToBoolean(? Call(predicate, thisArg, « kValue, 𝔽(k), O »)).
...
IntegerIndexedElementGet ( O, index )
Let buffer be the value of O's [[ViewedArrayBuffer]] internal slot.
If IsDetachedBuffer(buffer) is true, return undefined.
includes: [testBigIntTypedArray.js, detachArrayBuffer.js]
features: [BigInt, TypedArray, array-find-from-last]
---*/
testWithBigIntTypedArrayConstructors(function(TA) {
var sample = new TA(2);
var loops = 0;
sample.findLastIndex(function() {
if (loops === 0) {
$DETACHBUFFER(sample.buffer);
}
loops++;
});
assert.sameValue(loops, 2, "predicate is called once");
});