HADOOP-12368. Mark ViewFileSystemBaseTest and ViewFsBaseTest as abstract.

(cherry picked from commit 7ad3556ed3)

hadoop-common-project/hadoop-common/CHANGES.txt

@@ -246,6 +246,9 @@ Release 2.8.0 - UNRELEASED
     HADOOP-12325. RPC Metrics : Add the ability track and log slow RPCs.
     (Anu Engineer via xyao)
 
+    HADOOP-12368. Mark ViewFileSystemBaseTest and ViewFsBaseTest as abstract.
+    (wang)
+
  OPTIMIZATIONS
 
     HADOOP-11785. Reduce the number of listStatus operation in distcp

hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/fs/viewfs/ViewFileSystemBaseTest.java

@@ -77,7 +77,7 @@ import org.junit.Test;
  * </p>
  */
 
-public class ViewFileSystemBaseTest {
+abstract public class ViewFileSystemBaseTest {
   FileSystem fsView;  // the view file system - the mounts are here
   FileSystem fsTarget;  // the target file system - the mount will point here
   Path targetTestRoot;

hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/fs/viewfs/ViewFsBaseTest.java

@@ -76,7 +76,7 @@ import org.mockito.Mockito;
  *     @AfterClass    public static void ClusterShutdownAtEnd()
  * </p>
  */
-public class ViewFsBaseTest {
+abstract public class ViewFsBaseTest {
   FileContext fcView; // the view file system - the mounts are here
   FileContext fcTarget; // the target file system - the mount will point here
   Path targetTestRoot;