1 files changed, 21 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/String/prototype/lastIndexOf/S15.5.4.8_A1_T7.js b/js/src/tests/test262/built-ins/String/prototype/lastIndexOf/S15.5.4.8_A1_T7.js
new file mode 100644
index 0000000000..c8f5af9551
--- /dev/null
+++ b/js/src/tests/test262/built-ins/String/prototype/lastIndexOf/S15.5.4.8_A1_T7.js
@@ -0,0 +1,21 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: String.prototype.lastIndexOf(searchString, position)
+es5id: 15.5.4.8_A1_T7
+description: >
+    Call lastIndexOf(searchString, position) function with undefined
+    argument of string object
+---*/
+
+//////////////////////////////////////////////////////////////////////////////
+//CHECK#1
+//since ToString(undefined) evaluates to "undefined" lastIndexOf(undefined) evaluates to lastIndexOf("undefined",0)
+if (String("undefined").lastIndexOf(undefined) !== 0) {
+  throw new Test262Error('#1: String("undefined").lastIndexOf(undefined) === 0. Actual: ' + String("undefined").lastIndexOf(undefined));
+}
+//
+//////////////////////////////////////////////////////////////////////////////
+
+reportCompare(0, 0);