Junit Test case Initialize a class getting Error

I am writing a Junit test case for StandardAlone java class. I am getting nullPointerException while initialize the Class object. here is my code. Any help much appreciated

Here is my class

@RunWith(MockitoJUnitRunner.class) public class ABCGeneratorApplicationTest extends TestCase {

@Autowired
MyFileReader myFileReader;

@Before
public void setUp() throws Exception {


}

@Test
public void instrumentRead()
{
    String[] args = {"20180518","0002"};
    Stream<Employee> empList= myFileReader.read(args);
    Assert.assertNotNull(instrumentStream);
}