public String[] getRoleNames() {
            return roleNames;
        }

        public void setGroupNames(String[] groupNames) {
            this.groupNames = groupNames;
        }

        @Override
        public String[] getGroupNames() {
            return groupNames;
        }

        public void setPermissions(String[] permissions) {
            this.permissions = permissions;
        }

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

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

    public void test_getGroupNames_empty() {
        // Test when no groups match the prefix

        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

                                                     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">