Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

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

1 files changed, 53 insertions, 0 deletions

diff --git a/js/src/tests/test262/language/statements/for-of/body-dstr-assign-error.js b/js/src/tests/test262/language/statements/for-of/body-dstr-assign-error.js
new file mode 100644
index 0000000000..f9a4dfd242
--- /dev/null
+++ b/js/src/tests/test262/language/statements/for-of/body-dstr-assign-error.js
@@ -0,0 +1,53 @@
+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-runtime-semantics-forin-div-ofheadevaluation-tdznames-expr-iterationkind
+description: >
+    If the left-hand side requires a DestructuringAssignment operation and that
+    operation produces an error, the iterator should be closed and the error
+    forwarded to the runtime.
+info: |
+  ...
+  Else,
+    If lhsKind is assignment, then
+      Let status be the result of performing DestructuringAssignmentEvaluation of
+      assignmentPattern using nextValue as the argument.
+  ...
+  If status is an abrupt completion, then
+    Set the running execution context's LexicalEnvironment to oldEnv.
+    If iterationKind is enumerate, then
+      Return status.
+
+features: [destructuring-assignment, for-of, Symbol.iterator]
+---*/
+
+var callCount = 0;
+var iterationCount = 0;
+var iterable = {};
+var x = {
+  set attr(_) {
+    throw new Test262Error();
+  }
+};
+
+iterable[Symbol.iterator] = function() {
+  return {
+    next: function() {
+      return { done: false, value: [0] };
+    },
+    return: function() {
+      callCount += 1;
+    }
+  }
+};
+
+assert.throws(Test262Error, function() {
+  for ([x.attr] of iterable) {
+    iterationCount += 1;
+  }
+});
+
+assert.sameValue(iterationCount, 0, 'The loop body is not evaluated');
+assert.sameValue(callCount, 1, 'Iterator is closed');
+
+reportCompare(0, 0);