QueryParseException queryParseException = new QueryParseException(parseException);

        assertEquals(parseException, queryParseException.getCause());
        assertEquals(rootCause, queryParseException.getCause().getCause());
    }

    public void test_toString() {
        // Test toString method
        String errorMessage = "ToString test error";

        // Check first level cause
        assertNotNull(exception.getCause());
        assertEquals("Intermediate problem", exception.getCause().getMessage());

        // Check second level cause
        assertNotNull(exception.getCause().getCause());
        assertEquals("Root problem", exception.getCause().getCause().getMessage());
    }

    public void test_messageWithSpecialCharacters() {

        assertEquals("Top level error", exception.getMessage());
        assertEquals(middleCause, exception.getCause());
        assertEquals("Middle cause", exception.getCause().getMessage());
        assertEquals(rootCause, exception.getCause().getCause());
        assertEquals("Root cause", exception.getCause().getCause().getMessage());
    }

    public void test_throwAndCatch() {

        assertEquals(message, exception.getMessage());
        assertEquals(middleCause, exception.getCause());
        assertEquals("Middle cause", exception.getCause().getMessage());
        assertEquals(rootCause, exception.getCause().getCause());
        assertEquals("Root cause", exception.getCause().getCause().getMessage());
    }

    public void test_serialVersionUID() {

        assertNotNull(exception);
        assertEquals("Top level error", exception.getMessage());
        assertEquals(middleCause, exception.getCause());
        assertEquals(rootCause, exception.getCause().getCause());
    }

    public void test_stackTrace() {
        // Test that stack trace is properly set
        DataStoreException exception = new DataStoreException("Test error");

        assertEquals("Thumbnail generation error", exception.getMessage());
        assertEquals(middleCause, exception.getCause());
        assertEquals("Processing failed", exception.getCause().getMessage());
        assertEquals(innerCause, exception.getCause().getCause());
        assertEquals("Invalid image format", exception.getCause().getCause().getMessage());
    }

    public void test_serialization() {

        assertEquals("Final message", exception.getMessage());
        assertSame(intermediateCause, exception.getCause());
        assertSame(rootCause, exception.getCause().getCause());
    }

    @Test
    public void testToString() {
        String message = "Test error message";
        CurlException exception = new CurlException(message);

            fail("Should throw IORuntimeException");
        } catch (IORuntimeException e) {
            assertTrue(e.getCause() instanceof IOException);
            assertEquals("Test exception", e.getCause().getMessage());
        }
    }

    public void test_getXContentString_withEmptyContent() {
        ToXContent xContent = new ToXContent() {
            @Override

        final JobProcessingException exception = new JobProcessingException(middleCause);

        assertNotNull(exception);
        assertEquals(middleCause, exception.getCause());
        assertEquals(rootCause, exception.getCause().getCause());
    }

    public void test_inheritance() {
        // Test that JobProcessingException is a FessSystemException

        assertNull(exception.getCause());
    }

    public void test_constructorWithString_null() {
        // Test with null message
        JobNotFoundException exception = new JobNotFoundException((String) null);

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

    public void test_constructorWithString_empty() {