--- /dev/null	2013-07-03 08:19:57.063357762 -0700
+++ new/test/java/util/stream/test/org/openjdk/tests/java/util/stream/ConcatOpTest.java	2013-07-04 00:24:34.326329352 -0700
@@ -0,0 +1,49 @@
+/*
+ * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+package org.openjdk.tests.java.util.stream;
+
+import java.util.stream.OpTestCase;
+import java.util.stream.StreamTestDataProvider;
+
+import org.testng.annotations.Test;
+
+import java.util.stream.Stream;
+import java.util.stream.IntStream;
+import java.util.stream.LongStream;
+import java.util.stream.DoubleStream;
+import java.util.stream.TestData;
+
+import static java.util.stream.LambdaTestHelpers.*;
+
+public class ConcatOpTest extends OpTestCase {
+
+    // Sanity to make sure all type of stream source works
+    @Test(dataProvider = "StreamTestData<Integer>", dataProviderClass = StreamTestDataProvider.class)
+    public void testOpsSequential(String name, TestData.OfRef<Integer> data) {
+        exerciseOpsInt(data,
+                       s -> Stream.concat(s, data.stream()),
+                       s -> IntStream.concat(s, data.stream().mapToInt(Integer::intValue)),
+                       s -> LongStream.concat(s, data.stream().mapToLong(Integer::longValue)),
+                       s -> DoubleStream.concat(s, data.stream().mapToDouble(Integer::doubleValue)));
+    }
+}