1 files changed, 34 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/RegExp/lastIndex.js b/js/src/tests/test262/built-ins/RegExp/lastIndex.js
new file mode 100644
index 0000000000..77df89e5ab
--- /dev/null
+++ b/js/src/tests/test262/built-ins/RegExp/lastIndex.js
@@ -0,0 +1,34 @@
+// 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-regexp-pattern-flags
+description: Initial state of the `lastIndex` property
+info: |
+  [...]
+  7. Let O be ? RegExpAlloc(newTarget).
+  8. Return ? RegExpInitialize(O, P, F).
+
+  21.2.3.2.2 Runtime Semantics: RegExpInitialize
+
+  [...]
+  12. Perform ? Set(obj, "lastIndex", 0, true).
+  [...]
+
+  21.2.3.2.1 Runtime Semantics: RegExpAlloc
+
+  [...]
+  2. Perform ! DefinePropertyOrThrow(obj, "lastIndex", PropertyDescriptor
+     {[[Writable]]: true, [[Enumerable]]: false, [[Configurable]]: false}).
+  [...]
+includes: [propertyHelper.js]
+---*/
+
+var re = new RegExp('');
+
+assert.sameValue(re.lastIndex, 0);
+
+verifyNotEnumerable(re, 'lastIndex');
+verifyWritable(re, 'lastIndex');
+verifyNotConfigurable(re, 'lastIndex');
+
+reportCompare(0, 0);