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// Copyright (C) 2015 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
es6id: 23.4.1.1
esid: sec-weakset-iterable
description: >
Return IteratorClose(iter, status) if fail on adding value on constructing.
info: |
WeakSet ( [ iterable ] )
...
9. Repeat
f. Let status be Call(adder, set, «nextValue»).
g. If status is an abrupt completion, return IteratorClose(iter, status).
features: [Symbol.iterator]
---*/
var count = 0;
var iterable = {};
iterable[Symbol.iterator] = function() {
return {
next: function() {
return {
value: null,
done: false
};
},
return: function() {
count += 1;
}
};
};
WeakSet.prototype.add = function() {
throw new Test262Error();
};
assert.throws(Test262Error, function() {
new WeakSet(iterable);
});
assert.sameValue(
count, 1,
'The iterator is closed when `WeakSet.prototype.add` throws an error.'
);
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