1 files changed, 36 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Number/S8.12.8_A4.js b/js/src/tests/test262/built-ins/Number/S8.12.8_A4.js
new file mode 100644
index 0000000000..368cccc2af
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Number/S8.12.8_A4.js
@@ -0,0 +1,36 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    We overload valueOf method so it return non Primitive value and toString method so it return non Primitive value too
+    Thus [[DefaultValue]] must generate TypeError error
+es5id: 8.12.8_A4
+description: >
+    Try to overload toString and valueOf methods, they returned new
+    Objects
+---*/
+
+try
+{
+  var __obj = {
+    valueOf: function() {
+      return new Object;
+    },
+    toString: function() {
+      return new Object();
+    }
+  }
+  Number(__obj);
+  throw new Test262Error('#1.1: var __obj = {valueOf:function(){return new Object;},toNumber: function() {return new Object();}}; Number(__obj) throw TypeError. Actual: ' + (Number(__obj)));
+}
+catch (e)
+{
+  assert.sameValue(
+    e instanceof TypeError,
+    true,
+    'The result of evaluating (e instanceof TypeError) is expected to be true'
+  );
+}
+
+reportCompare(0, 0);