1 files changed, 27 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/String/prototype/toUpperCase/S15.5.4.18_A1_T10.js b/js/src/tests/test262/built-ins/String/prototype/toUpperCase/S15.5.4.18_A1_T10.js
new file mode 100644
index 0000000000..d978fb60b2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/String/prototype/toUpperCase/S15.5.4.18_A1_T10.js
@@ -0,0 +1,27 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: String.prototype.toUpperCase()
+es5id: 15.5.4.18_A1_T10
+description: >
+    Call toUpperCase() function of object with overrode toString
+    function
+---*/
+
+var __obj = {
+  toString: function() {
+    return "\u0041b";
+  }
+}
+__obj.toUpperCase = String.prototype.toUpperCase;
+
+//////////////////////////////////////////////////////////////////////////////
+//CHECK#1
+if (__obj.toUpperCase() !== "AB") {
+  throw new Test262Error('#1: var __obj = {toString:function(){return "\u0041b";}}; __obj.toUpperCase = String.prototype.toUpperCase; __obj.toUpperCase() ==="AB". Actual: ' + __obj.toUpperCase());
+}
+//
+//////////////////////////////////////////////////////////////////////////////
+
+reportCompare(0, 0);