assertNull(exception.getMessage());
        assertNull(exception.getCause());
    }

    @Test
    public void test_constructor_withEmptyMessage() {
        // Test constructor with empty message
        String message = "";
        SearchEngineClientException exception = new SearchEngineClientException(message);

        assertNotNull(exception);
        assertEquals(message, exception.getMessage());

        assertNull(exception.getCause());
        assertNull(exception.getComponentName());
    }

    @Test
    public void test_constructor_withEmptyComponentName() {
        // Test constructor with empty component name
        String componentName = "";
        ContainerNotAvailableException exception = new ContainerNotAvailableException(componentName);

        assertEquals(" is not available.", exception.getMessage());

        assertTrue(mockConfig.getApiPingEsFieldSet().contains("status"));
    }

    @Test
    public void test_emptyFieldSet() {
        // Test with empty field set
        FessConfig mockConfig = new FessConfig.SimpleImpl() {
            private static final long serialVersionUID = 1L;

            @Override
            public Set<String> getApiPingEsFieldSet() {

        // Test with null
        result = crawlJob.webConfigIds(null);
        assertNull(crawlJob.webConfigIds);
        assertSame(crawlJob, result);

        // Test with empty array
        result = crawlJob.webConfigIds(new String[0]);
        assertEquals(0, crawlJob.webConfigIds.length);
        assertSame(crawlJob, result);
    }

    // Test fileConfigIds setter
    @Test

    #  You can drop additional other schemas.
    #  Elements of this map are as below:
    #   o url: (NotRequired - Default same as main schema)
    #   o schema: (Required: if empty schema means valid schema, not required)
    #   o user: (NotRequired - Default same as main schema)
    #   o password: (NotRequired - Default same as main schema)
    #   o propertiesMap: (NotRequired - Default map:{})

        assertEquals(wildcardHandler, result);
    }

    @Test
    public void test_add_emptyOrigin() {
        // Setup
        String emptyOrigin = "";
        TestCorsHandler handler = new TestCorsHandler("empty-origin-handler");

        // Execute
        corsHandlerFactory.add(emptyOrigin, handler);
        CorsHandler result = corsHandlerFactory.get(emptyOrigin);

        // Verify
        assertNotNull(result);

            if (id == ProtwordsItem.getId()) {
                return OptionalEntity.of(ProtwordsItem);
            }
        }
        return OptionalEntity.empty();
    }

    @Override
    public synchronized PagingList<ProtwordsItem> selectList(final int offset, final int size) {
        if (protwordsItemList == null) {
            reload(null);
        }

        // The provider's toString might not contain the exact class name
        // Just verify it's not null and contains some meaningful info
        assertTrue("toString should not be empty", toString.length() > 0);
    }

    @Test
    public void test_hook_withNullAssistantDirector() {
        // When & Then - Should not throw exception
        try {
            curtainBeforeHook.hook(null);

        assertNull(exception.getMessage());
        assertNull(exception.getCause());
    }

    @Test
    public void test_constructor_withEmptyMessage() {
        // Test constructor with empty message
        String message = "";
        ScriptEngineException exception = new ScriptEngineException(message);

        assertEquals("", exception.getMessage());
        assertNull(exception.getCause());
    }

        assertTrue(exception.getStackTrace().length > 0);
        assertNull(exception.getCause());
    }

    @Test
    public void test_constructor_withEmptyMessage() {
        // Test with empty message
        String message = "";
        ResultOffsetExceededException exception = new ResultOffsetExceededException(message);

        assertEquals(message, exception.getMessage());