@Before
  public void setUpTestData() {
    persistedDto = ChannelDTO.builder().id(CHANNEL_ID).name(CHANNEL_NAME).build();

    emptyPostedDto = ChannelDTO.builder().name(StringUtils.EMPTY).build();

    correctPostedDto = ChannelDTO.builder().name(CHANNEL_NAME).build();
  }
  @Before
  public void init() {
    this.channelService = new ChannelServiceImpl(channelRepository, converterService);

    facebookDto =
        ChannelDTO.builder()
            .id(CHANNEL_ID_FACEBOOK)
            .name(CHANNEL_NAME_FACEBOOK)
            .deleted(false)
            .build();
    facebookEntity =
        ChannelEntity.builder()
            .id(CHANNEL_ID_FACEBOOK)
            .name(CHANNEL_NAME_FACEBOOK)
            .deleted(false)
            .build();
    deletedFacebookDto =
        ChannelDTO.builder()
            .id(CHANNEL_ID_FACEBOOK)
            .name(CHANNEL_NAME_FACEBOOK)
            .deleted(true)
            .build();
    deletedFacebookEntity =
        ChannelEntity.builder()
            .id(CHANNEL_ID_FACEBOOK)
            .name(CHANNEL_NAME_FACEBOOK)
            .deleted(true)
            .build();
    dtkDto = ChannelDTO.builder().id(CHANNEL_ID_DTK).name(CHANNEL_NAME_DTK).deleted(false).build();
    dtkEntity =
        ChannelEntity.builder().id(CHANNEL_ID_DTK).name(CHANNEL_NAME_DTK).deleted(false).build();
    linkedinDto =
        ChannelDTO.builder()
            .id(CHANNEL_ID_LINKEDIN)
            .name(CHANNEL_NAME_LINKEDIN)
            .deleted(false)
            .build();
    linkedinEntity =
        ChannelEntity.builder()
            .id(CHANNEL_ID_LINKEDIN)
            .name(CHANNEL_NAME_LINKEDIN)
            .deleted(false)
            .build();
    expectedChannelDTOList = Arrays.asList(facebookDto, dtkDto, linkedinDto);
    expectedChannelEntityList = Arrays.asList(facebookEntity, dtkEntity, linkedinEntity);
  }
  @Test(expected = IllegalArgumentException.class)
  public void saveOrUpdateShouldThrowIllegalArgumentExceptionWhenChannelNameIsNull() {
    // Given
    ChannelDTO channelDTO = ChannelDTO.builder().name(null).build();

    // When
    this.channelService.saveOrUpdate(channelDTO);

    // Then
  }