@Test public void userDTOsToUsersMapWithNullAuthoritiesStringShouldReturnUserWithEmptyAuthorities(){ userDto.setAuthorities(null); List<UserDTO> usersDto = new ArrayList<>(); usersDto.add(userDto); List<User> users = userMapper.userDTOsToUsers(usersDto); assertThat(users).isNotEmpty(); assertThat(users).size().isEqualTo(1); assertThat(users.get(0).getAuthorities()).isNotNull(); assertThat(users.get(0).getAuthorities()).isEmpty(); }
public List<User> userDTOsToUsers(List<UserDTO> userDTOs) { return userDTOs.stream() .filter(Objects::nonNull) .map(this::userDTOToUser) .collect(Collectors.toList()); }
UserMapper { public List<User> userDTOsToUsers(List<UserDTO> userDTOs) { return userDTOs.stream() .filter(Objects::nonNull) .map(this::userDTOToUser) .collect(Collectors.toList()); } }
UserMapper { public List<User> userDTOsToUsers(List<UserDTO> userDTOs) { return userDTOs.stream() .filter(Objects::nonNull) .map(this::userDTOToUser) .collect(Collectors.toList()); }  }
UserMapper { public List<User> userDTOsToUsers(List<UserDTO> userDTOs) { return userDTOs.stream() .filter(Objects::nonNull) .map(this::userDTOToUser) .collect(Collectors.toList()); }  List<UserDTO> usersToUserDTOs(List<User> users); UserDTO userToUserDTO(User user); List<User> userDTOsToUsers(List<UserDTO> userDTOs); User userDTOToUser(UserDTO userDTO); User userFromId(String id); }
UserMapper { public List<User> userDTOsToUsers(List<UserDTO> userDTOs) { return userDTOs.stream() .filter(Objects::nonNull) .map(this::userDTOToUser) .collect(Collectors.toList()); }  List<UserDTO> usersToUserDTOs(List<User> users); UserDTO userToUserDTO(User user); List<User> userDTOsToUsers(List<UserDTO> userDTOs); User userDTOToUser(UserDTO userDTO); User userFromId(String id);  }