EDIT

    private SecurityContext securityContext;

    public static CdmApplicationState getInstance() {

        if(cdmApplicationState == null) {

            cdmApplicationState = new CdmApplicationState();

        }

        return cdmApplicationState;

    }

        getInstance().setCurrentDataChangeService(null);

        getInstance().setAppConfig(null);

        getInstance().setSecurityContext(null);

    }

    }

}

import org.junit.Assert;

import org.junit.Test;

import eu.etaxonomy.cdm.api.cache.CdmServiceCacher;

import eu.etaxonomy.cdm.model.common.Language;

import eu.etaxonomy.taxeditor.httpinvoker.RemotingSessionAwareTest;

	private static final Logger logger = Logger.getLogger(CdmServiceCacherTest.class);

	@Test

	public void testLanguageCache() {

import org.junit.Assert;

import org.junit.Test;

import eu.etaxonomy.cdm.api.cache.CdmServiceCacher;

import eu.etaxonomy.cdm.api.service.ITermService;

import eu.etaxonomy.cdm.model.common.DefinedTermBase;

	 private static final Logger logger = Logger.getLogger(ServiceInterceptorTest.class);

	 private final ITermService termService = getRemoteApplicationController().getTermService();

	    @Test