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// |reftest| shell-option(--enable-iterator-helpers) skip-if(!this.hasOwnProperty('Iterator')||!xulRuntime.shell) -- iterator-helpers is not enabled unconditionally, requires shell-options
// Copyright (C) 2023 Michael Ficarra. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-iteratorprototype.filter
description: >
Iterator.prototype.filter coerces predicate return value to boolean
info: |
%Iterator.prototype%.filter ( predicate )
3.b.vi. If ToBoolean(selected) is true, then
features: [iterator-helpers]
flags: []
---*/
function* g() {
yield 0;
yield 0;
yield 0;
yield 1;
}
let iter = g();
let predicateCalls = 0;
iter = iter.filter(v => {
++predicateCalls;
return v;
});
assert.sameValue(predicateCalls, 0);
iter.next();
assert.sameValue(predicateCalls, 4);
iter.next();
assert.sameValue(predicateCalls, 4);
reportCompare(0, 0);
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