How to call tests from another test?

How can I call tests from another test?

I have a class in the jar that I have added as dependency into my project:

public class Tests{

private MockMvc mockMvc;


@Test
public void test1() throws Exception {
.....
mockMvc.perform(get(myRequest)
        .content(dataFromDB)
.......
    }
}
@Test
public void test2() throws Exception {
.....
mockMvc.perform(get(myRequest)
        .content(dataFromDB)
.......
    }
}
.......

And in my project I have:

@RunWith(SpringJUnit4ClassRunner.class)
@SpringBootTest(classes = MyApp.class)
public class MyTests {
private MockMvc mockMvc;

@Autowired
private WebApplicationContext context;

@Before
public void init() throws Exception {
    MockitoAnnotations.initMocks(this);
    mockMvc = MockMvcBuilders.webAppContextSetup(context).apply(springSecurity()).build();
}

@Test
public void test() throws Exception {
   CALL SOMEHOW TESTS FROM THE JAR HERE
}

I want those tests from the jar to test my project's database (for example: dataFromDB should be some data from the project where this dependency has been added).

I have already added this jar and I can call class Tests inside my project,so I have access to it. I am just not sure how to run those tests inside it.

What should I change so it works well? Thanks