assertTrue("All threads should complete", doneLatch.await(10, TimeUnit.SECONDS));

        Thread.sleep(100); // Wait for callback to execute

        assertEquals("Only one resolve should succeed", 1, callbackCount.get());
    }

    @Test
    public void test_registerCallbackWhileResolving() throws Exception {
        final Deferred<SuggestResponse> deferred = new Deferred<>();

        QueryLog queryLog = new QueryLog(field + ":", null);

        try {
            SuggestIndexResponse response = suggester.indexer().indexFromQueryLog(queryLog);
            // May succeed with empty result or fail depending on implementation
            assertNotNull(response);
        } catch (SuggestIndexException e) {
            // Expected for invalid query
            assertNotNull(e.getMessage());

        // The code returns true on line 281 when signatures DON'T match
        boolean result = verifyDigest.verify(data, 0, data.length, 0, mockRequest);

        // The verification should succeed (return false) since we're using the same key
        assertFalse(result);
    }

    @Test
    @DisplayName("Test verify method with unsigned response")
    void testVerifyWithUnsignedResponse() {

            // Arrange
            doReturn(true).when(smbFile).exists();
            doReturn(true).when(smbFile).isDirectory();
            doNothing().when(smbFile).mkdir();

            // Act & Assert - mkdir should succeed silently if directory already exists
            smbFile.mkdir();
        }

        @Test
        void testRenameToSameFile() throws MalformedURLException, SmbException {
            // Arrange

        executor.shutdown();

        // Then - Verify results
        assertEquals(threadCount * operationsPerThread, successCount.get(), "All encryption operations should succeed");
        assertEquals(threadCount * operationsPerThread, encrypted.size(), "Should have encrypted results for each message");

  ASSERT_EQ(TF_OK, TF_GetCode(status)) << TF_Message(status);

  // The device of var_handle0 is local device which is the same before and
  // after cluster update. Remove resource with valid device should succeed.
  TFE_Op* op = TFE_NewOp(ctx, "DestroyResourceOp", status);
  ASSERT_EQ(TF_OK, TF_GetCode(status)) << TF_Message(status);
  TFE_OpAddInput(op, var_handle0, status);
  TFE_OpSetDevice(op, dev0_name, status);

        updateItem2.setNewInputs(new String[] { "p", "q" });
        updateItem2.setNewOutput("r");

        // First update should succeed
        charMappingFile.update(updateItem1);

        // Second update should fail due to mismatch
        try {
            charMappingFile.update(updateItem2);
            fail("Should throw DictionaryException");

        // The loadBulkData=true path triggers getResourcePath + ResourceUtil.isExist checks.
        // In test environment resource files don't exist, so insertBulkData won't be called,
        // but the overall flow should still succeed.
        assertTrue(testClient.calledMethods.contains("addMapping"));
        assertTrue(testClient.calledMethods.contains("createAlias"));
    }

    @Test

                List.class);
        method.setAccessible(true);

        // Call should not throw - task is scheduled asynchronously
        // Will fail when executed due to null user, but scheduling should succeed
        try {
            method.invoke(authenticator, null, initialGroups, initialRoles, groupIds);
            // Small wait to allow scheduled task to start
            Thread.sleep(100);

        .getInputStream()
      fail<Any>()
    } catch (expected: IOException) {
    }
    server
      .url("/b")
      .toUrl()
      .openConnection()
      .getInputStream() // Should succeed.
  }

  /**
   * Throttle the request body by sleeping 500ms after every 3 bytes. With a 6-byte request, this
   * should yield one sleep for a total delay of 500ms.
   */
  @Test
  fun throttleRequest() {