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// Copyright (C) 2017 Mozilla Corporation. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-iteratorclose
description: >
If <iterator>.return is an object emulating `undefined` (e.g. `document.all`
in browsers), it shouldn't be treated as if it were actually `undefined`.
features: [generators, IsHTMLDDA]
---*/
var IsHTMLDDA = $262.IsHTMLDDA;
var iter = {
[Symbol.iterator]() { return this; },
next() { return {}; },
return: IsHTMLDDA,
};
assert.throws(TypeError, function() {
// `IsHTMLDDA` is called here with `iter` as `this` and no arguments, and it's
// specified to return `null` under these conditions. Then the iteration
// protocol throws a `TypeError` because `null` isn't an object.
for (var x of iter)
break;
});
reportCompare(0, 0);
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