1 files changed, 22 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/prototype/concat/S15.4.4.4_A2_T2.js b/js/src/tests/test262/built-ins/Array/prototype/concat/S15.4.4.4_A2_T2.js
new file mode 100644
index 0000000000..8d0efd6b2f
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Array/prototype/concat/S15.4.4.4_A2_T2.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-array.prototype.concat
+info: |
+    The concat function is intentionally generic.
+    It does not require that its this value be an Array object
+es5id: 15.4.4.4_A2_T2
+description: Checking this for Object object with no items
+---*/
+
+var x = {};
+x.concat = Array.prototype.concat;
+var arr = x.concat();
+
+arr.getClass = Object.prototype.toString;
+assert.sameValue(arr.getClass(), "[object Array]", 'arr.getClass() must return "[object Array]"');
+assert.sameValue(arr[0], x, 'The value of arr[0] is expected to equal the value of x');
+assert.sameValue(arr.length, 1, 'The value of arr.length is expected to be 1');
+
+reportCompare(0, 0);