Future<String> f = testExecutor.submit(doNothing(), RESULT_VALUE);
      mock.assertLastMethodCalled("submit");
      assertEquals(RESULT_VALUE, f.get());
    }
    {
      MockExecutor mock = new MockExecutor();
      TestExecutor testExecutor = new TestExecutor(mock);
      Callable<String> task = Callables.returning(RESULT_VALUE);
      Future<String> f = testExecutor.submit(task);

                }
                processAccessControlEntries(responseData, file);
                final Map<String, List<String>> headerFieldMap = file.getHeaderFields();
                if (headerFieldMap != null) {
                    for (final Map.Entry<String, List<String>> entry : headerFieldMap.entrySet()) {
                        responseData.addMetaData(entry.getKey(), entry.getValue());
                    }

    protected QueryBuilder convertWildcardQuery(final FessConfig fessConfig, final QueryContext context, final TermQuery termQuery,
            final float boost, final String field, final String text) {
        final String urlField = fessConfig.getIndexFieldUrl();
        final String queryString = "*" + text + "*";
        context.addFieldLog(urlField, queryString);
        context.addHighlightedQuery(text);

        }
    }

    /**
     * Validates a string is not null or empty
     *
     * @param value the string to validate
     * @param fieldName the field name for error reporting
     * @return the validated string
     * @throws IllegalArgumentException if string is null or empty
     */
    public static String requireNonEmpty(String value, String fieldName) {
        if (value == null) {

        });
    }

    @Test
    @DisplayName("Should get server")
    void testGetServer() {
        // Given
        String server = "testserver";
        when(mockReferralData.getServer()).thenReturn(server);

        // When
        String result = mockReferralData.getServer();

        // Then
        assertEquals(server, result);
        verify(mockReferralData).getServer();
    }

  }

  @Test
  public void edgeOrder_natural() {
    MutableNetwork<Integer, String> network =
        NetworkBuilder.directed().edgeOrder(ElementOrder.<String>natural()).build();

    addEdges(network);

    assertThat(network.edgeOrder()).isEqualTo(ElementOrder.sorted(Ordering.<String>natural()));
    assertThat(network.edges()).containsExactly("e", "i", "p").inOrder();

    @Resource
    private CrawlerContainer crawlerContainer;

    @Override
    protected String prepareConfigFile() {
        return "crawler.xml";
    }

    public void test_execute_web() throws Exception {
        final CrawlerWebServer server = new CrawlerWebServer(7070);
        server.start();

        final String url = "http://localhost:7070/";
        try {
            final int maxCount = 50;

            public String[] getQueryAdditionalCacheResponseFields(String... fields) {
                return baseConfig.getQueryAdditionalCacheResponseFields(fields);
            }

            @Override
            public String[] getQueryAdditionalHighlightedFields(String... fields) {
                return baseConfig.getQueryAdditionalHighlightedFields(fields);
            }

            @Override

                    final Map<String, Object> fields = searchHit.getSourceAsMap();
                    target.setParentUrl(getFieldValue(fields.get("parentUrl"), String.class));
                    target.setMethod(getFieldValue(fields.get("method"), String.class));
                    target.setMimeType(getFieldValue(fields.get("mimeType"), String.class));

            // build highlighting fields
            final String hlPrefix = ComponentUtil.getQueryHelper().getHighlightPrefix();
            for (final SearchHit searchHit : searchHits.getHits()) {
                final Map<String, Object> docMap = parseSearchHit(fessConfig, hlPrefix, searchHit);

                if (fessConfig.isResultCollapsed()) {
                    final Map<String, SearchHits> innerHits = searchHit.getInnerHits();