@Test
  public void testDeleteInstrumentByProjectId() throws Exception {
    // Arrange
    DataAcquisitionProject project = UnitTestCreateDomainObjectUtils.buildDataAcquisitionProject();
    this.dataAcquisitionProjectRepository.save(project);

    Instrument instrument =
        UnitTestCreateDomainObjectUtils.buildInstrument(project.getId(), "SurveyId");

    // create the instrument with the given id
    mockMvc
        .perform(
            put(API_INSTRUMENTS_URI + "/" + instrument.getId())
                .content(TestUtil.convertObjectToJsonBytes(instrument)))
        .andExpect(status().isCreated());

    // delete the instrument
    mockMvc
        .perform(post("/api/instruments/delete?dataAcquisitionProjectId=" + project.getId()))
        .andExpect(status().is2xxSuccessful());

    // check that the instrument has been deleted as well
    mockMvc
        .perform(get(API_INSTRUMENTS_URI + "/" + instrument.getId()))
        .andExpect(status().isNotFound());
  }
  @Test
  public void testCreateWithWrongTitle() throws Exception {
    // Arrange
    DataAcquisitionProject project = UnitTestCreateDomainObjectUtils.buildDataAcquisitionProject();
    this.dataAcquisitionProjectRepository.save(project);

    Instrument instrument =
        UnitTestCreateDomainObjectUtils.buildInstrument(project.getId(), "SurveyId");

    // Act and Assert
    // set inconsistent title
    instrument.getTitle().setDe("");
    ;

    // create the instrument with the given id
    mockMvc
        .perform(
            put(API_INSTRUMENTS_URI + "/" + instrument.getId())
                .content(TestUtil.convertObjectToJsonBytes(instrument)))
        .andExpect(status().isBadRequest())
        .andExpect(
            jsonPath(
                "$.errors[0].message",
                is("instrument-management.error.instrument.title.i18n-string-size")));
  }
  @Test
  public void testCreateInstrument() throws Exception {

    // Arrange
    DataAcquisitionProject project = UnitTestCreateDomainObjectUtils.buildDataAcquisitionProject();
    this.dataAcquisitionProjectRepository.save(project);

    Instrument instrument =
        UnitTestCreateDomainObjectUtils.buildInstrument(project.getId(), "SurveyId");

    // Act and Assert
    // create the instrument with the given id
    mockMvc
        .perform(
            put(API_INSTRUMENTS_URI + "/" + instrument.getId())
                .content(TestUtil.convertObjectToJsonBytes(instrument)))
        .andExpect(status().isCreated());

    elasticsearchUpdateQueueService.processQueue();

    // check that there are two instrument documents
    elasticsearchAdminService.refreshAllIndices();
    assertThat(elasticsearchAdminService.countAllDocuments(), equalTo(2.0));

    // check that auditing attributes have been set
    mockMvc
        .perform(get(API_INSTRUMENTS_URI + "/" + instrument.getId()))
        .andExpect(status().isOk())
        .andExpect(jsonPath("$.createdDate", not(isEmptyOrNullString())))
        .andExpect(jsonPath("$.lastModifiedDate", not(isEmptyOrNullString())))
        .andExpect(jsonPath("$.createdBy", is("system")))
        .andExpect(jsonPath("$.lastModifiedBy", is("system")));

    // call toString for test coverage :-|
    instrument.toString();
  }
  @Test
  public void testUpdateInstrument() throws Exception {
    // Arrange
    DataAcquisitionProject project = UnitTestCreateDomainObjectUtils.buildDataAcquisitionProject();
    this.dataAcquisitionProjectRepository.save(project);

    Instrument instrument =
        UnitTestCreateDomainObjectUtils.buildInstrument(project.getId(), "SurveyId");

    // Act and Assert
    // create the instrument with the given id
    mockMvc
        .perform(
            put(API_INSTRUMENTS_URI + "/" + instrument.getId())
                .content(TestUtil.convertObjectToJsonBytes(instrument)))
        .andExpect(status().isCreated());

    instrument.setTitle(new I18nString("Hurz2", "Hurz2"));

    // update the instrument with the given id
    mockMvc
        .perform(
            put(API_INSTRUMENTS_URI + "/" + instrument.getId())
                .content(TestUtil.convertObjectToJsonBytes(instrument)))
        .andExpect(status().is2xxSuccessful());

    // read the updated instrument and check the version
    mockMvc
        .perform(get(API_INSTRUMENTS_URI + "/" + instrument.getId() + "?projection=complete"))
        .andExpect(status().isOk())
        .andExpect(jsonPath("$.id", is(instrument.getId())))
        .andExpect(jsonPath("$.version", is(1)))
        .andExpect(jsonPath("$.title.de", is("Hurz2")));

    elasticsearchUpdateQueueService.processQueue();

    // check that there are two instrument documents
    elasticsearchAdminService.refreshAllIndices();
    assertThat(elasticsearchAdminService.countAllDocuments(), equalTo(2.0));
  }