// Do nothing
            }
        }, "activityHelper");

        String[] groupNames = ldapUser.getGroupNames();
        assertNotNull(groupNames);
        assertEquals(2, groupNames.length);
        assertEquals("group1", groupNames[0]);
        assertEquals("group2", groupNames[1]);
    }

    @Test
    public void test_getGroupNames_empty() {

        private final String[] roleNames;
        private final String[] groupNames;
        private final String[] permissions;

        public TestFessUser(String name, String[] roleNames, String[] groupNames, String[] permissions) {
            this.name = name;
            this.roleNames = roleNames;
            this.groupNames = groupNames;
            this.permissions = permissions;
        }

        @Override

							</sources>
						</mapping>
						<mapping>
							<directory>${packaging.fess.var.dir}</directory>
							<filemode>755</filemode>
							<username>${packaging.fess.user}</username>
							<groupname>${packaging.fess.group}</groupname>
						</mapping>
						<!-- bin -->
						<mapping>
							<directory>${packaging.fess.bin.dir}</directory>
							<filemode>755</filemode>
							<sources>
								<source>

                                                     property="doc.role" styleClass="form-control"
                                                     data-validation-help="1(username) | 2(groupname) | R(rolename)  e.g. Rguest"/>
                                    </div>
                                </div>
                                <div class="form-group row">