String text = "";
        String field = "content";

        List<String> results = converter.convert(text, field, "en");

        assertNotNull(results);
        assertTrue(results.isEmpty() || (results.size() == 1 && results.get(0).isEmpty()));
    }

    @Test
    public void testConvertWithNullText() throws IOException {
        // Test convert with null text - this might throw exception
        String text = null;

        if (now - lastLoadedTime > 60000L) {
            final List<String> nameList = loadDataStoreNameList();
            dataStoreNames = nameList.toArray(n -> new String[nameList.size()]);
            lastLoadedTime = now;
        }
        return dataStoreNames;
    }

    /**
     * Loads the list of available data store names by scanning plugin JAR files.

        final List<FilterFunctionBuilder> list = new ArrayList<>();
        functionScoreQuery.accept(list);
        queryBuilder = QueryBuilders.functionScoreQuery(queryBuilder, list.toArray(new FilterFunctionBuilder[list.size()]));
    }

    /**
     * Adds additional query clauses using a boolean query builder.
     * @param boolQuery Consumer that configures the boolean query.
     */

  @Synchronized private fun logEvents() {
    // Will be ineffective if test overrides the listener
    synchronized(clientEventsList) {
      println("$testName Events (${clientEventsList.size})")

      for (e in clientEventsList) {
        println(e)
      }
    }
  }

  fun recordedConnectionEventTypes(): List<String> = connectionListener.recordedEventTypes()

  companion object {

                stream(roles).of(stream -> stream.forEach(s -> permissionSet.add(systemHelper.getSearchRoleByRole(s))));
                permissions = permissionSet.toArray(new String[permissionSet.size()]);
            }
            return permissions;
        }

        /**
         * Gets the session index.
         * @return The session index.
         */
        public String getSessionIndex() {

        queryRescorer = new QueryRescorer() {
            @Override
            public RescorerBuilder<?> evaluate(Map<String, Object> params) {
                if (params != null && params.size() > 100) {
                    return createMockRescorerBuilder();
                }
                return null;
            }
        };

        // Test with large number of parameters

    if (generate != null) {
      ImmutableList<Parameter> params = Invokable.from(generate).getParameters();
      List<Object> args = Lists.newArrayListWithCapacity(params.size());
      TypeVariable<?>[] typeVars = rawType.getTypeParameters();
      for (int i = 0; i < params.size(); i++) {
        TypeToken<?> paramType = type.resolveType(typeVars[i]);
        // We require all @Generates methods to either be parameter-less or accept non-null

        /* expected= */ BigIntegerMath.sqrt(BigInteger.ZERO.setBit(2 * Long.SIZE - 1), FLOOR)
            .longValue(),
        /* actual= */ LongMath.MAX_POWER_OF_SQRT2_UNSIGNED);
  }

  @GwtIncompatible // BigIntegerMath // TODO(cpovirk): GWT-enable BigIntegerMath
  public void testMaxLog10ForLeadingZeros() {
    for (int i = 0; i < Long.SIZE; i++) {
      assertEquals(

  @SuppressWarnings({"CollectionSizeTruth", "CollectionContainsTruth"})
  private static void containsExactlySanityCheck(Collection<?> collection, Object... varargs) {
    assertThat(collection.size()).isEqualTo(varargs.length);
    for (Object obj : varargs) {
      assertThat(collection.contains(obj)).isTrue();
    }
    assertThat(ImmutableList.copyOf(collection.iterator())).containsExactlyElementsIn(varargs);
  }

    }
  }

  private static void checkResults(List<Future<String>> futures)
      throws InterruptedException, ExecutionException {
    for (int i = 0; i < futures.size(); i++) {
      assertThat(futures.get(i).get()).isEqualTo(RESULT_VALUE + i);
    }
  }

  private static List<Callable<String>> createTasks(int n) {
    List<Callable<String>> callables = new ArrayList<>();