diff -r 000000000000 -r 6474c204b198 js/src/tests/test262/ch11/11.4/11.4.7/S11.4.7_A2.2_T1.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/tests/test262/ch11/11.4/11.4.7/S11.4.7_A2.2_T1.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,79 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator -x uses [[Default Value]]
+ *
+ * @path ch11/11.4/11.4.7/S11.4.7_A2.2_T1.js
+ * @description If Type(value) is Object, evaluate ToPrimitive(value, Number)
+ */
+
+//CHECK#1
+var object = {valueOf: function() {return -1}};
+if (-object !== 1) {
+  $ERROR('#1: var object = {valueOf: function() {return -1}}; -object === 1. Actual: ' + (-object));
+}
+
+//CHECK#2
+var object = {valueOf: function() {return -1}, toString: function() {return 0}};
+if (-object !== 1) {
+  $ERROR('#2: var object = {valueOf: function() {return -1}, toString: function() {return 0}}; -object === 1. Actual: ' + (-object));
+} 
+
+//CHECK#3
+var object = {valueOf: function() {return -1}, toString: function() {return {}}};
+if (-object !== 1) {
+  $ERROR('#3: var object = {valueOf: function() {return -1}, toString: function() {return {}}}; -object === 1. Actual: ' + (-object));
+}
+
+//CHECK#4
+try {
+  var object = {valueOf: function() {return -1}, toString: function() {throw "error"}};
+  if (-object !== 1) {
+    $ERROR('#4.1: var object = {valueOf: function() {return -1}, toString: function() {throw "error"}}; -object === 1. Actual: ' + (-object));
+  }
+}
+catch (e) {
+  if (e === "error") {
+    $ERROR('#4.2: var object = {valueOf: function() {return -1}, toString: function() {throw "error"}}; -object not throw "error"');
+  } else {
+    $ERROR('#4.3: var object = {valueOf: function() {return -1}, toString: function() {throw "error"}}; -object not throw Error. Actual: ' + (e));
+  }
+}
+
+//CHECK#5
+var object = {toString: function() {return -1}};
+if (-object !== 1) {
+  $ERROR('#5.1: var object = {toString: function() {return -1}}; -object === 1. Actual: ' + (-object));
+}
+
+//CHECK#6
+var object = {valueOf: function() {return {}}, toString: function() {return -1}}
+if (-object !== 1) {
+  $ERROR('#6: var object = {valueOf: function() {return {}}, toString: function() {return -1}}; -object === 1. Actual: ' + (-object));
+}
+
+//CHECK#7
+try {
+  var object = {valueOf: function() {throw "error"}, toString: function() {return -1}};
+  -object;
+  $ERROR('#7.1: var object = {valueOf: function() {throw "error"}, toString: function() {return -1}}; -object throw "error". Actual: ' + (-object));
+}  
+catch (e) {
+  if (e !== "error") {
+    $ERROR('#7.2: var object = {valueOf: function() {throw "error"}, toString: function() {return -1}}; -object throw "error". Actual: ' + (e));
+  } 
+}
+
+//CHECK#8
+try {
+  var object = {valueOf: function() {return {}}, toString: function() {return {}}};
+  -object;
+  $ERROR('#8.1: var object = {valueOf: function() {return {}}, toString: function() {return {}}}; -object throw TypeError. Actual: ' + (-object));
+}  
+catch (e) {
+  if ((e instanceof TypeError) !== true) {
+    $ERROR('#8.2: var object = {valueOf: function() {return {}}, toString: function() {return {}}}; -object throw TypeError. Actual: ' + (e));
+  } 
+}
+