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// 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: TypeError thrown when @@iterator method returns a non-object value
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).
7.4.1 GetIterator
1. If method was not passed, then
a. Let method be ? GetMethod(obj, @@iterator).
2. Let iterator be ? Call(method, obj).
3. If Type(iterator) is not Object, throw a TypeError exception.
features: [generators, Symbol.iterator]
---*/
var badIter = {};
badIter[Symbol.iterator] = function() {
return 7;
};
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(typeof caught, 'object');
assert.sameValue(caught.constructor, TypeError);
reportCompare(0, 0);