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// 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.findindex
description: >
Return index if predicate return a boolean true value.
info: |
22.2.3.11 %TypedArray%.prototype.findIndex ( predicate [ , thisArg ] )
%TypedArray%.prototype.findIndex is a distinct function that implements the
same algorithm as Array.prototype.findIndex as defined in 22.1.3.9 except that
the this object's [[ArrayLength]] internal slot is accessed in place of
performing a [[Get]] of "length".
...
22.1.3.9 Array.prototype.findIndex ( predicate[ , thisArg ] )
...
5. Let k be 0.
6. Repeat, while k < len
...
c. Let testResult be ToBoolean(? Call(predicate, T, « kValue, k, O »)).
d. If testResult is true, return k.
...
includes: [testBigIntTypedArray.js]
features: [BigInt, Symbol, TypedArray]
---*/
testWithBigIntTypedArrayConstructors(function(TA) {
var sample = new TA([39n, 3n, 9n]);
var called = 0;
var result = sample.findIndex(function() {
called++;
return true;
});
assert.sameValue(result, 0, "returned true on sample[0]");
assert.sameValue(called, 1, "predicate was called once");
called = 0;
result = sample.findIndex(function(val) {
called++;
return val === 9n;
});
assert.sameValue(called, 3, "predicate was called three times");
assert.sameValue(result, 2, "returned true on sample[3]");
result = sample.findIndex(function() { return "string"; });
assert.sameValue(result, 0, "ToBoolean(string)");
result = sample.findIndex(function() { return {}; });
assert.sameValue(result, 0, "ToBoolean(object)");
result = sample.findIndex(function() { return Symbol(""); });
assert.sameValue(result, 0, "ToBoolean(symbol)");
result = sample.findIndex(function() { return 1; });
assert.sameValue(result, 0, "ToBoolean(number)");
result = sample.findIndex(function() { return -1; });
assert.sameValue(result, 0, "ToBoolean(negative number)");
});
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