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// 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: >
Change values during predicate call
info: |
%TypedArray%.prototype.findLastIndex ( predicate [ , thisArg ] )
...
6. Repeat, while k ≥ 0
...
c. Let testResult be ! ToBoolean(? Call(predicate, thisArg, « kValue, 𝔽(k), O »)).
...
includes: [compareArray.js, testBigIntTypedArray.js]
features: [BigInt, TypedArray, array-find-from-last]
---*/
testWithBigIntTypedArrayConstructors(function(TA) {
var arr = [10n, 20n, 30n];
var sample;
var result;
sample = new TA(3);
sample.findLastIndex(function(val, i) {
sample[i] = arr[i];
assert.sameValue(val, 0n, "value is not mapped to instance");
});
assert(compareArray(sample, arr), "values set during each predicate call");
sample = new TA(arr);
result = sample.findLastIndex(function(val, i) {
if ( i === 2 ) {
sample[0] = 7n;
}
return val === 7n;
});
assert.sameValue(result, 0, "value found");
sample = new TA(arr);
result = sample.findLastIndex(function(val, i) {
if ( i === 2 ) {
sample[0] = 7n;
}
return val === 10n;
});
assert.sameValue(result, -1, "value not found");
sample = new TA(arr);
result = sample.findLastIndex(function(val, i) {
if ( i < 2 ) {
sample[2] = 7n;
}
return val === 7n;
});
assert.sameValue(result, -1, "value not found - changed after call");
});
reportCompare(0, 0);
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