/**
 * Exception for plugin-related errors.
 */
public class PluginException extends FessSystemException {

    private static final long serialVersionUID = 1L;

    /**
     * Creates a plugin exception with message and cause.
     *
     * @param message the error message
     * @param cause the cause
     */
    public PluginException(final String message, final Throwable cause) {
        super(message, cause);

        PluginException exception = new PluginException(message, cause);

        assertNotNull(exception);
        assertEquals(message, exception.getMessage());
        assertEquals(cause, exception.getCause());
    }

    @Test
    public void test_constructor_withNullMessage() {
        // Test constructor with null message
        PluginException exception = new PluginException(null);