@Test
    public void test_Error_PayrollGroupUniqueness() throws Exception {
        addPayrollGroup(2, "Surabaya");

        WorkplacePojo workplacePojo = WorkplacePojo.fromEntity(workplace);
        workplacePojo.code = "SBY";
        workplacePojo.name = "Surabaya";

        CompleteWorkplacePojo pojo = new CompleteWorkplacePojo();
        pojo.workplace = workplacePojo;
        pojo.isWorkplaceAsPayrollGroup = true;
        pojo.isWorkplaceAsAttendanceGroup = true;

        performTestError(pojo)
            .andExpect(jsonPath("$.errors", hasSize(1)))
            .andExpect(jsonPath("$.errors[0]").exists())
            .andExpect(jsonPath("$.errors[0].code", is("payrollGroup.bk")))
            .andExpect(jsonPath("$.errors[0].desc").isNotEmpty());

        List<Workplace> workplaces = repo.findAll();
        assertEquals(1, workplaces.size());

        List<PayrollGroup> payrollGroups = payrollGroupRepo.findAll();
        assertEquals(2, payrollGroups.size());

        List<AttendanceGroup> attendanceGroups = attendanceGroupRepo.findAll();
        assertEquals(1, attendanceGroups.size());
    }