addtestcase

Author: GuoPhilipse

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestFSImage.java

@@ -86,6 +86,7 @@
 import org.junit.Test;
 
 import static org.junit.Assert.assertArrayEquals;
+import static org.junit.Assert.fail;
 
 public class TestFSImage {
 
@@ -275,6 +276,31 @@ public void testSaveAndLoadStripedINodeFile() throws IOException{
     }
   }
 
+  @Test
+  public void testImportCheckpoint() throws IOException{
+    Configuration conf = new Configuration();
+    conf.set(DFSConfigKeys.DFS_NAMENODE_CHECKPOINT_EDITS_DIR_KEY,"");
+    MiniDFSCluster cluster = null;
+    try {
+      cluster = new MiniDFSCluster.Builder(conf).build();
+      cluster.waitActive();
+      FSNamesystem fsn = cluster.getNamesystem();
+      FSImage fsImage= new FSImage(conf);
+      try {
+        fsImage.doImportCheckpoint(fsn);
+        fail("Expect to throw IOException.");
+      } catch (IOException e) {
+        GenericTestUtils.assertExceptionContains(
+                "Cannot import image from a checkpoint. "
+        + "\"dfs.namenode.checkpoint.edits.dir\" is not set.", e);
+      }
+    } finally {
+      if (cluster != null) {
+        cluster.shutdown();
+      }
+    }
+  }
+
   /**
    * Test if a INodeFileUnderConstruction with BlockInfoStriped can be
    * saved and loaded by FSImageSerialization