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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.forEach
description: >
Gets the next method from the iterator only once
info: |
%Iterator.prototype%.forEach ( fn )
features: [iterator-helpers]
flags: []
---*/
let nextGets = 0;
class TestIterator extends Iterator {
get next() {
++nextGets;
let counter = 5;
return function () {
if (counter < 0) {
return { done: true, value: undefined };
} else {
return { done: false, value: --counter };
}
};
}
}
let iterator = new TestIterator();
assert.sameValue(nextGets, 0);
assert.sameValue(
iterator.forEach(() => {}),
undefined
);
assert.sameValue(nextGets, 1);
reportCompare(0, 0);
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