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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.take
description: >
Underlying iterator next returns object with throwing value getter, but is already done
info: |
%Iterator.prototype%.take ( limit )
features: [iterator-helpers]
flags: []
---*/
class ReturnCalledError extends Error {}
class ValueGetterError extends Error {}
class ThrowingIterator extends Iterator {
next() {
return {
done: true,
get value() {
throw new ValueGetterError();
},
};
}
return() {
throw new ReturnCalledError();
}
}
let iterator = new ThrowingIterator().take(0);
assert.throws(ReturnCalledError, function () {
iterator.next();
});
iterator = new ThrowingIterator().take(1);
iterator.next();
reportCompare(0, 0);
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