blob: f301ab26aafbc940ed803829d58152ff7bfb5bdd [file] [log] [blame]
// Copyright (C) 2016 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-generator-function-definitions-runtime-semantics-evaluation
es6id: 14.4.14
description: Abrupt completion returned when invoking iterator `next` method
info: |
YieldExpression : yield * AssignmentExpression
1. Let exprRef be the result of evaluating AssignmentExpression.
2. Let value be ? GetValue(exprRef).
3. Let iterator be ? GetIterator(value).
4. Let received be NormalCompletion(undefined).
5. Repeat
a. If received.[[Type]] is normal, then
i. Let innerResult be ? IteratorNext(iterator, received.[[Value]]).
7.4.2 IteratorNext
1. If value was not passed, then
[...]
2. Else,
a. Let result be ? Invoke(iterator, "next", « value »).
features: [generators, Symbol.iterator]
---*/
var thrown = new Test262Error();
var badIter = {};
badIter[Symbol.iterator] = function() {
return {
next: function() {
throw thrown;
}
};
};
function* g() {
try {
yield * badIter;
} catch (err) {
caught = err;
}
}
var iter = g();
var result, caught;
result = iter.next();
assert.sameValue(result.value, undefined);
assert.sameValue(result.done, true);
assert.sameValue(caught, thrown);