@Test
public void should_return_tracing_by_uniqueId() {

    String uniqueId = "uniqueId";
    Tracing tracing = mock(Tracing.class);
    when(tracingDao.getTracingByUniqueId(uniqueId)).thenReturn(tracing);
    assertThat(tracingService.getByUniqueId(uniqueId), is(tracing));
    verify(tracingDao, times(1)).getTracingByUniqueId(uniqueId);
}