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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: 23.2.1.1
description: >
Set ( [ iterable ] )
When the Set function is called with optional argument iterable the following steps are taken:
...
9. Repeat
a. Let next be IteratorStep(iter).
b. ReturnIfAbrupt(next).
c. If next is false, return set.
d. Let nextValue be IteratorValue(next).
e. ReturnIfAbrupt(nextValue).
f. Let status be Call(adder, set, «nextValue.[[value]]»).
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;
}
};
};
Set.prototype.add = function() {
throw new Error();
}
assert.throws(Error, function() {
new Set(iterable);
});
assert.sameValue(
count, 1, "The iterator is closed when `Set.prototype.add` throws an error."
);
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