@BeforeEach
    void setup() {
        this.mockMvc = MockMvcBuilders.standaloneSetup(ownerController).build();

        george = new Owner();
        george.setId(TEST_OWNER_ID);
        george.setFirstName("George");
        george.setLastName("Franklin");
        george.setAddress("110 W. Liberty St.");
        george.setCity("Madison");
        george.setTelephone("6085551023");
        given(this.clinicService.findOwnerById(TEST_OWNER_ID)).willReturn(george);

    }
Test class for {@link OwnerController}

@author Colin But
src/test/java/org/springframework/samples/petclinic/web/OwnerControllerTests.java