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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: >
Iteration protocol is not initiated for non-delegating YieldExpression
info: |
YieldExpression:yieldAssignmentExpression
1. Let exprRef be the result of evaluating AssignmentExpression.
2. Let value be ? GetValue(exprRef).
3. Return ? GeneratorYield(CreateIterResultObject(value, false)).
features: [generators, Symbol.iterator]
---*/
var callCount = 0;
var iterSpy = Object.defineProperty({}, Symbol.iterator, {
get: function() {
callCount += 1;
}
});
function* g() {
yield iterSpy;
}
var iter = g();
var result;
result = iter.next();
assert.sameValue(result.value, iterSpy);
assert.sameValue(result.done, false);
assert.sameValue(callCount, 0);
result = iter.next();
assert.sameValue(result.value, undefined);
assert.sameValue(result.done, true);
assert.sameValue(callCount, 0);
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