HADOOP-6825. FileStatus needs unit tests. Contributed by Rodrigo Schmidt.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@963587 13f79535-47bb-0310-9956-ffa450edef68

src/test/core/org/apache/hadoop/fs/TestFileStatus.java

@@ -0,0 +1,71 @@
+/**
+ * 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.fs;
+
+import static org.junit.Assert.*;
+
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.DataInput;
+import java.io.DataInputStream;
+import java.io.DataOutput;
+import java.io.DataOutputStream;
+
+import org.junit.Test;
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+import org.apache.hadoop.fs.FileStatus;
+import org.apache.hadoop.fs.Path;
+
+public class TestFileStatus {
+
+  private static final Log LOG =
+    LogFactory.getLog(TestFileStatus.class);
+
+  @Test
+  public void testFileStatusWritable() throws Exception {
+    FileStatus[] tests = {
+        new FileStatus(1,false,5,3,4,5,null,"","",new Path("/a/b")),
+        new FileStatus(0,false,1,2,3,new Path("/")),
+        new FileStatus(1,false,5,3,4,5,null,"","",new Path("/a/b"))
+      };
+
+    LOG.info("Writing FileStatuses to a ByteArrayOutputStream");
+    // Writing input list to ByteArrayOutputStream
+    ByteArrayOutputStream baos = new ByteArrayOutputStream();
+    DataOutput out = new DataOutputStream(baos);
+    for (FileStatus fs : tests) {
+      fs.write(out);
+    }
+
+    LOG.info("Creating ByteArrayInputStream object");
+    DataInput in =
+      new DataInputStream(new ByteArrayInputStream(baos.toByteArray()));
+
+
+    LOG.info("Testing if read objects are equal to written ones");
+    FileStatus dest = new FileStatus();
+    int iterator = 0;
+    for (FileStatus fs : tests) {
+      dest.readFields(in);
+      assertEquals("Different FileStatuses in iteration " + iterator,
+          dest, fs);
+      iterator++;
+    }
+  }
+}