String message = "";
        GsaConfigException exception = new GsaConfigException(message);

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

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

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.codelibs.core.lang.StringUtil;
import org.codelibs.fess.Constants;
import org.codelibs.fess.exception.GsaConfigException;
import org.codelibs.fess.opensearch.config.exentity.FileConfig;
import org.codelibs.fess.opensearch.config.exentity.LabelType;
import org.codelibs.fess.opensearch.config.exentity.WebConfig;