HDFS-4046. Adding the missed file in revision 1406011

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1406012 13f79535-47bb-0310-9956-ffa450edef68

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/protocol/TestHdfsProtoUtil.java

@@ -0,0 +1,42 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.hadoop.hdfs.protocol;
+
+import org.apache.hadoop.hdfs.protocol.proto.HdfsProtos;
+import org.apache.hadoop.util.DataChecksum;
+import org.junit.Test;
+
+import static org.junit.Assert.assertEquals;
+
+public class TestHdfsProtoUtil {
+  @Test
+  public void testChecksumTypeProto() {
+    assertEquals(DataChecksum.Type.NULL,
+        HdfsProtoUtil.fromProto(HdfsProtos.ChecksumTypeProto.CHECKSUM_NULL));
+    assertEquals(DataChecksum.Type.CRC32,
+        HdfsProtoUtil.fromProto(HdfsProtos.ChecksumTypeProto.CHECKSUM_CRC32));
+    assertEquals(DataChecksum.Type.CRC32C,
+        HdfsProtoUtil.fromProto(HdfsProtos.ChecksumTypeProto.CHECKSUM_CRC32C));
+    assertEquals(HdfsProtoUtil.toProto(DataChecksum.Type.NULL),
+        HdfsProtos.ChecksumTypeProto.CHECKSUM_NULL);
+    assertEquals(HdfsProtoUtil.toProto(DataChecksum.Type.CRC32),
+        HdfsProtos.ChecksumTypeProto.CHECKSUM_CRC32);
+    assertEquals(HdfsProtoUtil.toProto(DataChecksum.Type.CRC32C),
+        HdfsProtos.ChecksumTypeProto.CHECKSUM_CRC32C);
+  }
+}