js/src/tests/test262/built-ins/Iterator/prototype/some/predicate-returns-falsey.js


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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.some
description: >
  Iterator.prototype.some returns false when the predicate returns falsey for all iterated values
info: |
  %Iterator.prototype%.some ( predicate )

features: [iterator-helpers]
flags: []
---*/
function* g() {
  yield 0;
  yield 1;
  yield 2;
  yield 3;
}

let result = g().some(() => false);
assert.sameValue(result, false);

reportCompare(0, 0);