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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.map
description: >
Underlying iterator return is not called when result iterator is exhausted
info: |
%Iterator.prototype%.map ( mapper )
features: [iterator-helpers]
flags: []
---*/
function* g() {
yield 0;
yield 1;
yield 2;
}
class TestIterator extends Iterator {
get next() {
let n = g();
return function() {
return n.next();
};
}
return() {
throw new Test262Error();
}
}
let iterator = new TestIterator().map(() => 0);
iterator.next();
iterator.next();
iterator.next();
reportCompare(0, 0);
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