1 files changed, 34 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/expressions/addition/S11.6.1_A3.1_T2.3.js b/js/src/tests/test262/language/expressions/addition/S11.6.1_A3.1_T2.3.js
new file mode 100644
index 0000000000..2e28d0e87d
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/addition/S11.6.1_A3.1_T2.3.js
@@ -0,0 +1,34 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    If Type(Primitive(x)) is not String and Type(Primitive(y)) is not String,
+    then operator x + y returns ToNumber(x) + ToNumber(y)
+es5id: 11.6.1_A3.1_T2.3
+description: >
+    Type(Primitive(x)) is different from Type(Primitive(y)) and both
+    types vary between Number (primitive or object) and Undefined
+---*/
+
+//CHECK#1
+if (isNaN(1 + undefined) !== true) {
+  throw new Test262Error('#1: 1 + undefined === Not-a-Number. Actual: ' + (1 + undefined));
+}
+
+//CHECK#2
+if (isNaN(undefined + 1) !== true) {
+  throw new Test262Error('#2: undefined + 1 === Not-a-Number. Actual: ' + (undefined + 1));
+}
+
+//CHECK#3
+if (isNaN(new Number(1) + undefined) !== true) {
+  throw new Test262Error('#3: new Number(1) + undefined === Not-a-Number. Actual: ' + (new Number(1) + undefined));
+}
+
+//CHECK#4
+if (isNaN(undefined + new Number(1)) !== true) {
+  throw new Test262Error('#4: undefined + new Number(1) === Not-a-Number. Actual: ' + (undefined + new Number(1)));
+}
+
+reportCompare(0, 0);