1 files changed, 17 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/prototype/lastIndexOf/15.4.4.15-5-14.js b/js/src/tests/test262/built-ins/Array/prototype/lastIndexOf/15.4.4.15-5-14.js
new file mode 100644
index 0000000000..719c88cd1b
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Array/prototype/lastIndexOf/15.4.4.15-5-14.js
@@ -0,0 +1,17 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-array.prototype.lastindexof
+description: >
+    Array.prototype.lastIndexOf - value of 'fromIndex' is a number
+    (value is NaN)
+---*/
+
+// from Index will be convert to +0
+assert.sameValue([0, true].lastIndexOf(true, NaN), -1, '[0, true].lastIndexOf(true, NaN)');
+assert.sameValue([true, 0].lastIndexOf(true, NaN), 0, '[true, 0].lastIndexOf(true, NaN)');
+assert.sameValue([0, true].lastIndexOf(true, -NaN), -1, '[0, true].lastIndexOf(true, -NaN)');
+assert.sameValue([true, 0].lastIndexOf(true, -NaN), 0, '[true, 0].lastIndexOf(true, -NaN)');
+
+reportCompare(0, 0);