EDIT

package eu.etaxonomy.cdm.api.service;

import static org.junit.Assert.assertNotNull;

import static org.junit.Assert.assertNull;

import static org.junit.Assert.assertTrue;

import java.io.FileNotFoundException;

import java.util.ArrayList;

import java.util.List;

import java.util.UUID;

import org.apache.log4j.Logger;

import org.junit.Test;

import org.unitils.spring.annotation.SpringBeanByType;

import eu.etaxonomy.cdm.model.permission.GrantedAuthorityImpl;

import eu.etaxonomy.cdm.model.permission.Group;

import eu.etaxonomy.cdm.model.permission.User;

import eu.etaxonomy.cdm.test.integration.CdmTransactionalIntegrationTest;

public class GroupServiceImplTest extends CdmTransactionalIntegrationTest {

    @SuppressWarnings("unused")

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

    @SpringBeanByType

    IGroupService groupService;

    @SpringBeanByType

    IUserService userService;

    @Test

    public void testDeleteGroup(){

        String admin_all = "ADMIN_ALL";

    	GrantedAuthorityImpl testAuthority = GrantedAuthorityImpl.NewInstance(admin_all);

    	Group group = Group.NewInstance("TestGroup");

    	group.addGrantedAuthority(testAuthority);

    	UUID groupUUID =  groupService.saveGroup(group);

    	User user1 = User.NewInstance("TestUser1", "pwd");

    	UUID UserUUID =  userService.save(user1).getUuid();

		groupService.delete(group);

    	group = groupService.find(groupUUID);

    	assertNull(group);

    	user1 = userService.find(UserUUID);

    	assertNotNull(user1);

    }

    @Test

    public void testAddMemberToGroup(){

        String admin_all = "ADMIN_ALL";

        GrantedAuthorityImpl testAuthority = GrantedAuthorityImpl.NewInstance(admin_all);

        Group group = Group.NewInstance("TestGroup");

        group.addGrantedAuthority(testAuthority);

        UUID groupUUID =  groupService.saveGroup(group);

        User user1 = User.NewInstance("TestUser1", "pwd");

        UUID UserUUID =  userService.save(user1).getUuid();

        group.addMember(user1);

        List<Group> groups = new ArrayList<>();

        groups.add(group);

        groupService.merge(groups, true);

        commitAndStartNewTransaction();

        group = groupService.find(groupUUID);

        assertNotNull(group);

        assertNotNull(group.getMembers());

        user1 = userService.find(UserUUID);

        assertTrue(group.getMembers().iterator().next().equals(user1));

    }

    @Override

    public void createTestDataSet() throws FileNotFoundException {}

}