assertEquals(expectedCause, e.getCause());
            assertEquals(componentName, e.getComponentName());
        }
    }

    @Test
    public void test_instanceOfFessSystemException() {
        // Test that ContainerNotAvailableException is an instance of FessSystemException
        ContainerNotAvailableException exception = new ContainerNotAvailableException("test");

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

    @Test
    public void test_instanceOfFessSystemException() {
        // Test that ThumbnailGenerationException is an instance of FessSystemException
        ThumbnailGenerationException exception = new ThumbnailGenerationException("Test");