diff -r 000000000000 -r 6474c204b198 js/src/tests/test262/ch11/11.5/11.5.1/S11.5.1_A4_T5.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/tests/test262/ch11/11.5/11.5.1/S11.5.1_A4_T5.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,50 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The result of a floating-point multiplication is governed by the rules of IEEE 754 double-precision arithmetics
+ *
+ * @path ch11/11.5/11.5.1/S11.5.1_A4_T5.js
+ * @description Multiplication of an infinity by a finite non-zero value results in a signed infinity
+ */
+
+//CHECK#1
+if (Number.NEGATIVE_INFINITY * -1 !== Number.POSITIVE_INFINITY) {
+  $ERROR('#1: -Infinity * -1 === Infinity. Actual: ' + (-Infinity * -1));
+}
+
+//CHECK#2
+if (-1 * Number.NEGATIVE_INFINITY !== Number.POSITIVE_INFINITY) {
+  $ERROR('#2: -1 * -Infinity === Infinity. Actual: ' + (-1 * -Infinity));
+}
+
+//CHECK#3
+if (Number.POSITIVE_INFINITY * -1 !== Number.NEGATIVE_INFINITY) {
+  $ERROR('#3: Infinity * -1 === -Infinity. Actual: ' + (Infinity * -1));
+}
+
+//CHECK#4
+if (-1 * Number.POSITIVE_INFINITY !== Number.NEGATIVE_INFINITY) {
+  $ERROR('#4: -1 * Infinity === -Infinity. Actual: ' + (-1 * Infinity));
+}  
+
+//CHECK#5
+if (Number.POSITIVE_INFINITY * Number.MAX_VALUE !== Number.POSITIVE_INFINITY) {
+  $ERROR('#5: Infinity * Number.MAX_VALUE === Infinity. Actual: ' + (Infinity * Number.MAX_VALUE));
+}
+
+//CHECK#6
+if (Number.POSITIVE_INFINITY * Number.MAX_VALUE !== Number.MAX_VALUE * Number.POSITIVE_INFINITY) {
+  $ERROR('#6: Infinity * Number.MAX_VALUE === Number.MAX_VALUE * Infinity. Actual: ' + (Infinity * Number.MAX_VALUE));
+}
+
+//CHECK#7
+if (Number.NEGATIVE_INFINITY * Number.MIN_VALUE !== Number.NEGATIVE_INFINITY) {
+  $ERROR('#7: -Infinity * Number.MIN_VALUE === -Infinity. Actual: ' + (-Infinity * Number.MIN_VALUE));
+}
+
+//CHECK#8
+if (Number.NEGATIVE_INFINITY * Number.MIN_VALUE !== Number.MIN_VALUE * Number.NEGATIVE_INFINITY) {
+  $ERROR('#8: -Infinity * Number.MIN_VALUE === Number.MIN_VALUE * -Infinity. Actual: ' + (-Infinity * Number.MIN_VALUE));
+}  
+