We assert for the response status, the response message, and the location header:

assertTrue(mockResponse.status == 201)
assertTrue(mockResponse.entity.toString() == Constants.IDENTITY_CREATED)
assertNotNull(mockResponse.metadata["location"])

The unit test appears as follows:

@RunWith(MockitoJUnitRunner::class)
class CreatePersonTest {
    @InjectMocks
    private lateiit var controller: PersonController

    @Mock
    private lateinit var serviceImpl: PersonServiceImpl

    private var builder = mock(Response.ResponseBuilder::class.java)

    @Test
    fun createPersonTest() {
        val createPersonRequest = mock(Person::class.java)
        createPersonRequest.name = "test user"
        createPersonRequest.loginId = "[email protected]"
        createPersonRequest.orgId = "123"
        val uuid = UUID.randomUUID().toString()

        val response = TestUtil.getResponseForIdentityCreation(uuid)

        `when`(serviceImpl.createPerson(createPersonRequest))
                .thenReturn(uuid)
        `when`(builder.build())
                .thenReturn(response)

        controller.createPerson(createPersonRequest)

        assertTrue(response.status == 201)
        assertTrue(response.entity.toString() == Constants.IDENTITY_CREATED)
        assertNotNull(response.metadata["location"])
    }
}

Let's run this unit test:

As we can see, this unit test case has executed successfully.