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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: 23.3.1.1
esid: sec-weakmap-iterable
description: >
Closes the iterator object after not object error on next item.
info: |
WeakMap ( [ iterable ] )
...
9. Repeat
...
d. Let nextItem be IteratorValue(next).
e. ReturnIfAbrupt(nextItem).
f. If Type(nextItem) is not Object,
i. Let error be Completion{[[type]]: throw, [[value]]: a newly created
TypeError object, [[target]]:empty}.
ii. Return IteratorClose(iter, error).
features:
- Symbol
- Symbol.iterator
---*/
var count = 0;
var nextItem;
var iterable = {};
iterable[Symbol.iterator] = function() {
return {
next: function() {
return {
value: nextItem,
done: false
};
},
return: function() {
count += 1;
}
};
};
nextItem = 1;
assert.throws(TypeError, function() {
new WeakMap(iterable);
});
assert.sameValue(count, 1);
nextItem = true;
assert.throws(TypeError, function() {
new WeakMap(iterable);
});
assert.sameValue(count, 2);
nextItem = '';
assert.throws(TypeError, function() {
new WeakMap(iterable);
});
assert.sameValue(count, 3);
nextItem = null;
assert.throws(TypeError, function() {
new WeakMap(iterable);
});
assert.sameValue(count, 4);
nextItem = undefined;
assert.throws(TypeError, function() {
new WeakMap(iterable);
});
assert.sameValue(count, 5);
nextItem = Symbol('a');
assert.throws(TypeError, function() {
new WeakMap(iterable);
});
assert.sameValue(count, 6);
|
