TrustedListenableFutureTask.create(
            new Callable<Integer>() {
              @Override
              public Integer call() throws Exception {
                enterLatch.countDown();
                try {
                  new CountDownLatch(1).await(); // wait forever
                  throw new AssertionError();
                } catch (InterruptedException e) {
                  interruptedExceptionThrown.set(true);

    // Basic generate tests that work without component dependencies
    public void test_generate_outputFile_exists() throws Exception {
        final File outputFile = File.createTempFile("command_generator", ".out");
        try {
            assertTrue(outputFile.exists());
            generator.setCommandList(Collections.singletonList("invalid_command_for_test"));
            assertTrue(generator.generate("test_id", outputFile));
        } finally {

    }

    @Override
    public synchronized void insert(final SynonymItem item) {
        try (SynonymUpdater updater = new SynonymUpdater(item)) {
            reload(updater);
        }
    }

    @Override
    public synchronized void update(final SynonymItem item) {
        try (SynonymUpdater updater = new SynonymUpdater(item)) {
            reload(updater);
        }
    }

  static void verifyGetOnPendingFuture(Future<?> future) {
    try {
      future.get();
      fail();
    } catch (Exception e) {
      assertThat(e).isInstanceOf(IllegalStateException.class);
      assertThat(e).hasMessageThat().isEqualTo("Cannot get() on a pending future.");
    }
  }

  static void verifyTimedGetOnPendingFuture(Future<?> future) {
    try {
      future.get(0, SECONDS);
      fail();

  private static void joinUninterruptibly(Thread thread, long timeout, TimeUnit unit) {
    boolean interrupted = false;
    try {
      long remainingNanos = unit.toNanos(timeout);
      long end = System.nanoTime() + remainingNanos;

      while (true) {
        try {
          // TimeUnit.timedJoin() treats negative timeouts just like zero.
          NANOSECONDS.timedJoin(thread, remainingNanos);

    public void test_validation() {
        try {
            settings.badword().add("aaaa");
            assertTrue(true);
        } catch (IllegalArgumentException e) {
            fail();
        }

        try {
            settings.badword().add("");
            fail();
        } catch (IllegalArgumentException e) {
            assertTrue(true);
        }

        try {
            settings.badword().add("aaaa bbb");

        }
    }

    // Helper method to get TimeZoneProvider from DBFluteSystem using reflection
    private DfFinalTimeZoneProvider getDBFluteSystemTimeZoneProvider() {
        try {
            // Try to access the field, handling potential security restrictions
            Field field = DBFluteSystem.class.getDeclaredField("finalTimeZoneProvider");
            field.setAccessible(true);

    public void test_rethrowWithWrapping() {
        // Test rethrowing with wrapping
        String originalMessage = "Original theme error";
        String wrapperMessage = "Failed to process theme";

        try {
            try {
                throw new ThemeException(originalMessage);
            } catch (ThemeException e) {
                throw new ThemeException(wrapperMessage, e);
            }

                executorService.shutdownNow();
            }
        }
    }

    private void processTask(final ExecutorService executorService, final TimeoutTask task) {
        try {
            executorService.execute(() -> {
                try {
                    task.expired();
                } catch (final Exception e) {
                    if (e instanceof InterruptedException) {

                // sleep for 10ms just in case this is windows holding a file lock
                try {
                    Thread.sleep(10);
                } catch (InterruptedException e) {
                    // ignore
                }
                metadataFile.delete(); // if this fails, forget about it, we'll try to overwrite it anyway so no need
                // to delete on exit
            }