@Test
public void catTest() throws IOException {

  FileSystemTestUtils.createByteFile(fs, "/testFile", WriteType.MUST_CACHE,
          10, 10);
  InterpreterResult output = alluxioInterpreter.interpret("cat /testFile", null);
  byte[] expected = BufferUtils.getIncreasingByteArray(10);
  Assert.assertEquals(Code.SUCCESS, output.code());
  Assert.assertArrayEquals(expected,
          output.message().substring(0, output.message().length() - 1).getBytes());
}