1 files changed, 30 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/String/prototype/S15.5.4_A3.js b/js/src/tests/test262/built-ins/String/prototype/S15.5.4_A3.js
new file mode 100644
index 0000000000..33540be3a4
--- /dev/null
+++ b/js/src/tests/test262/built-ins/String/prototype/S15.5.4_A3.js
@@ -0,0 +1,30 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The value of the internal [[Prototype]] property of the String prototype
+    object is the Object prototype object (15.2.3.1)
+es5id: 15.5.4_A3
+description: Checking Object.prototype.isPrototypeOf(String.prototype)
+---*/
+
+//////////////////////////////////////////////////////////////////////////////
+//CHECK#1
+if (!(Object.prototype.isPrototypeOf(String.prototype))) {
+  throw new Test262Error('#1: Object.prototype.isPrototypeOf(String.prototype) return true. Actual: ' + Object.prototype.isPrototypeOf(String.prototype));
+}
+//
+//////////////////////////////////////////////////////////////////////////////
+
+delete String.prototype.toString;
+
+//////////////////////////////////////////////////////////////////////////////
+//CHECK#2
+if (String.prototype.toString() != "[object " + "String" + "]") {
+  throw new Test262Error('#2: delete String.prototype.toString; String.prototype.toString() == "[object "+"String"+"]". Actual: String.prototype.toString() ==' + String.prototype.toString());
+}
+//
+//////////////////////////////////////////////////////////////////////////////
+
+reportCompare(0, 0);