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added coverage for built-in Map spec to ensure that a TypeError is thrown when Symbol.iterator is undefined (#1444)

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Amal Hussein 2018-02-13 11:36:10 -05:00 committed by Leo Balter
parent 2fb8eca677
commit 66eaf57f88
1 changed files with 19 additions and 0 deletions
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test/built-ins/Map/iterator-is-undefined-throws.js Normal file
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// Copyright (C) 2018 Amal Hussein. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-map-objects
description: >
Throws a TypeError if the iterator of the iterable is undefined.
info: |
Map ( [ iterable ] )
...
9. Let iteratorRecord be ? GetIterator(iterable).
features: [Symbol.iterator]
---*/
var iterable = { [Symbol.iterator]: undefined };
assert.throws(TypeError,
function () {
new Map(iterable);
});