1 files changed, 24 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/prototype/concat/S15.4.4.4_A1_T4.js b/js/src/tests/test262/built-ins/Array/prototype/concat/S15.4.4.4_A1_T4.js
new file mode 100644
index 0000000000..be7c04c42e
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Array/prototype/concat/S15.4.4.4_A1_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.
+
+/*---
+esid: sec-array.prototype.concat
+info: |
+    When the concat method is called with zero or more arguments item1, item2,
+    etc., it returns an array containing the array elements of the object followed by
+    the array elements of each argument in order
+es5id: 15.4.4.4_A1_T4
+description: Checking this algorithm, items are [], [,]
+---*/
+
+var x = [, 1];
+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], undefined, 'The value of arr[0] is expected to equal undefined');
+assert.sameValue(arr[1], 1, 'The value of arr[1] is expected to be 1');
+assert.sameValue(arr[2], undefined, 'The value of arr[2] is expected to equal undefined');
+assert.sameValue(arr.length, 3, 'The value of arr.length is expected to be 3');
+
+reportCompare(0, 0);