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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: >
Predicate is not called on an empty instance
info: |
%TypedArray%.prototype.findLastIndex ( predicate [ , thisArg ] )
...
6. Repeat, while k ≥ 0
...
c. Let testResult be ! ToBoolean(? Call(predicate, thisArg, « kValue, 𝔽(k), O »)).
...
7. Return -1.
includes: [testTypedArray.js]
features: [TypedArray, array-find-from-last]
---*/
testWithTypedArrayConstructors(function(TA) {
var sample = new TA();
var called = false;
var predicate = function() {
called = true;
return true;
};
var result = sample.findLastIndex(predicate);
assert.sameValue(
called, false,
"does not call predicate"
);
assert.sameValue(
result, -1,
"returns -1 on an empty instance"
);
});
reportCompare(0, 0);
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