1 files changed, 25 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/String/prototype/substring/S15.5.4.15_A1_T15.js b/js/src/tests/test262/built-ins/String/prototype/substring/S15.5.4.15_A1_T15.js
new file mode 100644
index 0000000000..9055b4be17
--- /dev/null
+++ b/js/src/tests/test262/built-ins/String/prototype/substring/S15.5.4.15_A1_T15.js
@@ -0,0 +1,25 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: String.prototype.substring (start, end)
+es5id: 15.5.4.15_A1_T15
+description: >
+    Call substring without arguments. Instance is Number with
+    prototype.substring = String.prototype.substring
+---*/
+
+var __num = 11.001002;
+
+Number.prototype.substring = String.prototype.substring;
+
+
+//////////////////////////////////////////////////////////////////////////////
+//CHECK#1
+if (__num.substring() !== "11.001002") {
+  throw new Test262Error('#1: var __num = 11.001002; Number.prototype.substring = String.prototype.substring; __num.substring()==="11.001002". Actual: ' + __num.substring());
+}
+//
+//////////////////////////////////////////////////////////////////////////////
+
+reportCompare(0, 0);