@Test
 public void deleteFileTest() throws Exception {
   long fileId = mFsMaster.createFile(new AlluxioURI("/testFile"), CreateFileOptions.defaults());
   Assert.assertEquals(fileId, mFsMaster.getFileId(new AlluxioURI("/testFile")));
   mFsMaster.delete(new AlluxioURI("/testFile"), true);
   Assert.assertEquals(IdUtils.INVALID_FILE_ID, mFsMaster.getFileId(new AlluxioURI("/testFile")));
 }
 @Test
 public void deleteDirectoryWithDirectoriesTest2() throws Exception {
   mFsMaster.createDirectory(new AlluxioURI("/testFolder"), CreateDirectoryOptions.defaults());
   mFsMaster.createDirectory(
       new AlluxioURI("/testFolder/testFolder2"), CreateDirectoryOptions.defaults());
   long fileId =
       mFsMaster.createFile(new AlluxioURI("/testFolder/testFile"), CreateFileOptions.defaults());
   long fileId2 =
       mFsMaster.createFile(
           new AlluxioURI("/testFolder/testFolder2/testFile2"), CreateFileOptions.defaults());
   Assert.assertEquals(1, mFsMaster.getFileId(new AlluxioURI("/testFolder")));
   Assert.assertEquals(2, mFsMaster.getFileId(new AlluxioURI("/testFolder/testFolder2")));
   Assert.assertEquals(fileId, mFsMaster.getFileId(new AlluxioURI("/testFolder/testFile")));
   Assert.assertEquals(
       fileId2, mFsMaster.getFileId(new AlluxioURI("/testFolder/testFolder2/testFile2")));
   try {
     mFsMaster.delete(new AlluxioURI("/testFolder/testFolder2"), false);
     Assert.fail("Deleting a nonempty directory nonrecursively should fail");
   } catch (DirectoryNotEmptyException e) {
     Assert.assertEquals(
         ExceptionMessage.DELETE_NONEMPTY_DIRECTORY_NONRECURSIVE.getMessage("testFolder2"),
         e.getMessage());
   }
   Assert.assertEquals(1, mFsMaster.getFileId(new AlluxioURI("/testFolder")));
   Assert.assertEquals(2, mFsMaster.getFileId(new AlluxioURI("/testFolder/testFolder2")));
   Assert.assertEquals(fileId, mFsMaster.getFileId(new AlluxioURI("/testFolder/testFile")));
   Assert.assertEquals(
       fileId2, mFsMaster.getFileId(new AlluxioURI("/testFolder/testFolder2/testFile2")));
 }
 @Test
 public void deleteEmptyDirectoryTest() throws Exception {
   mFsMaster.createDirectory(new AlluxioURI("/testFolder"), CreateDirectoryOptions.defaults());
   Assert.assertEquals(1, mFsMaster.getFileId(new AlluxioURI("/testFolder")));
   mFsMaster.delete(new AlluxioURI("/testFolder"), true);
   Assert.assertEquals(
       IdUtils.INVALID_FILE_ID, mFsMaster.getFileId(new AlluxioURI("/testFolder")));
 }
 /** Tests that deleting a file from a folder updates the folder's last modification time. */
 @Test
 public void lastModificationTimeDeleteTest() throws Exception {
   mFsMaster.createDirectory(new AlluxioURI("/testFolder"), CreateDirectoryOptions.defaults());
   mFsMaster.createFile(new AlluxioURI("/testFolder/testFile"), CreateFileOptions.defaults());
   long folderId = mFsMaster.getFileId(new AlluxioURI("/testFolder"));
   long modificationTimeBeforeDelete = mFsMaster.getFileInfo(folderId).getLastModificationTimeMs();
   CommonUtils.sleepMs(2);
   mFsMaster.delete(new AlluxioURI("/testFolder/testFile"), true);
   long modificationTimeAfterDelete = mFsMaster.getFileInfo(folderId).getLastModificationTimeMs();
   Assert.assertTrue(modificationTimeBeforeDelete < modificationTimeAfterDelete);
 }
 @Test
 public void deleteDirectoryWithDirectoriesTest() throws Exception {
   mFsMaster.createDirectory(new AlluxioURI("/testFolder"), CreateDirectoryOptions.defaults());
   mFsMaster.createDirectory(
       new AlluxioURI("/testFolder/testFolder2"), CreateDirectoryOptions.defaults());
   long fileId =
       mFsMaster.createFile(new AlluxioURI("/testFolder/testFile"), CreateFileOptions.defaults());
   long fileId2 =
       mFsMaster.createFile(
           new AlluxioURI("/testFolder/testFolder2/testFile2"), CreateFileOptions.defaults());
   Assert.assertEquals(1, mFsMaster.getFileId(new AlluxioURI("/testFolder")));
   Assert.assertEquals(2, mFsMaster.getFileId(new AlluxioURI("/testFolder/testFolder2")));
   Assert.assertEquals(fileId, mFsMaster.getFileId(new AlluxioURI("/testFolder/testFile")));
   Assert.assertEquals(
       fileId2, mFsMaster.getFileId(new AlluxioURI("/testFolder/testFolder2/testFile2")));
   mFsMaster.delete(new AlluxioURI("/testFolder"), true);
   Assert.assertEquals(
       IdUtils.INVALID_FILE_ID,
       mFsMaster.getFileId(new AlluxioURI("/testFolder/testFolder2/testFile2")));
 }
 @Test
 public void deleteRootTest() throws Exception {
   mThrown.expect(InvalidPathException.class);
   mThrown.expectMessage(ExceptionMessage.DELETE_ROOT_DIRECTORY.getMessage());
   mFsMaster.delete(new AlluxioURI("/"), true);
 }