assertNotSame(exception1, exception2);
        assertNotSame(exception2, exception3);
        assertNotSame(exception1, exception3);

        assertEquals("Error 1", exception1.getMessage());
        assertEquals("Error 2", exception2.getMessage());
        assertEquals("Error 3", exception3.getMessage());
    }

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

    public void test_constructor_withNullMessage() {
        // Test with null message
        LdapConfigurationException exception = new LdapConfigurationException(null);

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

        assertTrue(exception instanceof RuntimeException);
        assertTrue(exception instanceof Exception);
        assertTrue(exception instanceof Throwable);
    }

    public void test_serializable() {
        // Test that the exception has serialVersionUID
        WebApiException exception = new WebApiException(404, "Not Found");

    }

    public void test_inheritanceFromFessSystemException() {
        // Test that StorageException extends FessSystemException
        StorageException exception = new StorageException("Test");

        assertTrue(exception instanceof FessSystemException);
        assertTrue(exception instanceof RuntimeException);
        assertTrue(exception instanceof Exception);
        assertTrue(exception instanceof Throwable);

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

    public void test_constructor_withNullMessage() {
        // Test with null message
        ResultOffsetExceededException exception = new ResultOffsetExceededException(null);

        assertNull(exception.getMessage());

        UnsupportedSearchException exception = new UnsupportedSearchException("test");

        assertTrue(exception instanceof UnsupportedSearchException);
        assertTrue(exception instanceof FessSystemException);
        assertTrue(exception instanceof RuntimeException);
        assertTrue(exception instanceof Exception);
        assertTrue(exception instanceof Throwable);
    }

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

    public void test_getCause_withNestedExceptions() {
        // Test deeply nested exception causes
        Exception level3 = new Exception("Level 3: Database connection failed");
        Exception level2 = new Exception("Level 2: User lookup failed", level3);

        SearchQueryException exception1 = new SearchQueryException("Exception 1");
        SearchQueryException exception2 = new SearchQueryException("Exception 2", new Exception("Cause 2"));
        SearchQueryException exception3 = new SearchQueryException(new Exception("Cause 3"));

        assertNotSame(exception1, exception2);
        assertNotSame(exception2, exception3);
        assertNotSame(exception1, exception3);

        assertTrue(exception instanceof RuntimeException);
        assertTrue(exception instanceof Exception);
        assertTrue(exception instanceof Throwable);
    }

    public void test_serialVersionUID() {
        // Test that the exception has a serialVersionUID field
        FessUserNotFoundException exception1 = new FessUserNotFoundException("user1");
        FessUserNotFoundException exception2 = new FessUserNotFoundException("user2");

# Exceptions - `HTTPException` and `WebSocketException`

These are the exceptions that you can raise to show errors to the client.

When you raise an exception, as would happen with normal Python, the rest of the execution is aborted. This way you can raise these exceptions from anywhere in the code to abort a request and show the error to the client.

You can use:

* `HTTPException`
* `WebSocketException`