@Test
public void countTest() throws IOException {

  FileSystemTestUtils.createByteFile(fs, "/testRoot/testFileA",
          WriteType.CACHE_THROUGH, 10, 10);
  FileSystemTestUtils.createByteFile(fs, "/testRoot/testDir/testFileB",
          WriteType.CACHE_THROUGH, 20, 20);
  FileSystemTestUtils.createByteFile(fs, "/testRoot/testFileB",
          WriteType.CACHE_THROUGH, 30, 30);
  InterpreterResult output = alluxioInterpreter.interpret("count /testRoot", null);
  String expected = "";
  String format = "%-25s%-25s%-15s\n";
  expected += String.format(format, "File Count", "Folder Count", "Total Bytes");
  expected += String.format(format, 3, 2, 60);
  expected += "\n";
  Assert.assertEquals(expected, output.message());
}