Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 62 insertions, 0 deletions

diff --git a/js/src/tests/test262/language/expressions/yield/star-rhs-iter-nrml-res-done-no-value.js b/js/src/tests/test262/language/expressions/yield/star-rhs-iter-nrml-res-done-no-value.js
new file mode 100644
index 0000000000..2450ad2884
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/yield/star-rhs-iter-nrml-res-done-no-value.js
@@ -0,0 +1,62 @@
+// 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: >
+  `value` property is not accessed when iteration is incomplete
+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]]).
+        ii. Let done be ? IteratorComplete(innerResult).
+        iii. If done is true, then
+             1. Return ? IteratorValue(innerResult).
+features: [generators, Symbol.iterator]
+---*/
+
+var badIter = {};
+var callCount = 0;
+var spyValue = Object.defineProperty({ done: false }, 'value', {
+  get: function() {
+    callCount += 1;
+  }
+});
+badIter[Symbol.iterator] = function() {
+  return {
+    next: function() {
+      return spyValue;
+    }
+  };
+};
+var delegationComplete = false;
+function* g() {
+  yield * badIter;
+  delegationComplete = true;
+}
+var iter = g();
+
+iter.next();
+assert.sameValue(callCount, 0, 'access count (first iteration)');
+assert.sameValue(
+  delegationComplete, false, 'delegation ongoing (first iteration)'
+);
+
+iter.next();
+assert.sameValue(callCount, 0, 'access count (second iteration)');
+assert.sameValue(
+  delegationComplete, false, 'delegation ongoing (second iteration)'
+);
+
+spyValue.done = true;
+iter.next();
+assert.sameValue(callCount, 1, 'access count (final iteration)');
+assert.sameValue(delegationComplete, true, 'delegation complete');
+
+reportCompare(0, 0);