### Question:
AdminUserMapper implements DataMapper<AdminUser, AdminUserDto> { @Override public AdminUser mapDtoToEntity(AdminUserDto input) { AdminUser output = new AdminUser(); output.setId(input.getId()); logger.info("Mapped AdminUserDto (id: {}) to AdminUser.", input.getId()); return output; }  @Override AdminUser mapDtoToEntity(AdminUserDto input); @Override AdminUserDto mapEntityToDto(AdminUser input); @Override Collection<AdminUser> mapDtosToEntities(Collection<AdminUserDto> input); @Override Collection<AdminUserDto> mapEntitiesToDtos(Collection<AdminUser> input);  }### Answer:
@Test public void mapDtoToEntity_expectAllMapped() { adminUserDto.setId(UUID.randomUUID()); adminUser = adminUserMapper.mapDtoToEntity(adminUserDto); assertMapped(adminUserDto, adminUser); }