@Test
void register() {

	BDDMockito.given(petRepository.save(Mockito.any(Pet.class)))
			  .willAnswer(invocation -> invocation.getArgument(0));
	var pet = new Pet();
	pet.setPetType(PET_TYPE);
	pet.setName(PET_NAME);
	pet.setStatus(PetStatus.AVAILABLE);
	var petRegistered = petRegister.register(pet);
	Assertions.assertNotNull(petRegistered);
	Assertions.assertEquals(PET_ID, petRegistered.getPetId());
	Assertions.assertEquals(pet.getPetType(), petRegistered.getPetType());
	Assertions.assertEquals(pet.getName(), petRegistered.getName());
	Assertions.assertEquals(pet.getStatus(), petRegistered.getStatus());
	BDDMockito.then(petRepository).should().save(Mockito.any(Pet.class));
}