1 files changed, 20 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/RegExp/S15.10.4.1_A8_T12.js b/js/src/tests/test262/built-ins/RegExp/S15.10.4.1_A8_T12.js
new file mode 100644
index 0000000000..a180108d15
--- /dev/null
+++ b/js/src/tests/test262/built-ins/RegExp/S15.10.4.1_A8_T12.js
@@ -0,0 +1,20 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: let P be ToString(pattern) and let F be ToString(flags)
+es5id: 15.10.4.1_A8_T12
+description: >
+    Pattern is "\u0042" and flags is {toString:void 0,
+    valueOf:function(){throw "invalof";} }
+---*/
+
+try {
+    throw new Test262Error('#1.1: new RegExp("\\u0042", {toString:void 0, valueOf:function(){throw "invalof";}}) throw "invalof". Actual: ' + (new RegExp("\u0042", {toString:void 0, valueOf:function(){throw "invalof";}})));
+} catch (e) {
+  assert.sameValue(e, "invalof", 'The value of e is expected to be "invalof"');
+}
+
+// TODO: Convert to assert.throws() format.
+
+reportCompare(0, 0);