1 files changed, 24 insertions, 0 deletions
diff --git a/js/src/tests/test262/ch11/11.4/11.4.5/S11.4.5_A3_T4.js b/js/src/tests/test262/ch11/11.4/11.4.5/S11.4.5_A3_T4.js
new file mode 100644
index 000000000..ed0d7798b
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.4/11.4.5/S11.4.5_A3_T4.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator --x returns x = ToNumber(x) - 1
+ *
+ * @path ch11/11.4/11.4.5/S11.4.5_A3_T4.js
+ * @description Type(x) is undefined or null
+ */
+
+//CHECK#1
+var x; 
+--x;
+if (isNaN(x) !== true) {
+  $ERROR('#1: var x; --x; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#2
+var x = null; 
+--x;
+if (x !== -1) {
+  $ERROR('#2: var x = null; --x; x === -1. Actual: ' + (x));
+}
+