assertArrayEquals(groups, user.getGroupNames());

        // Test with single group
        groups = new String[] { "users" };
        user = new TestFessUser("testuser", new String[] {}, groups, new String[] {});
        assertArrayEquals(groups, user.getGroupNames());

        // Test with empty groups
        groups = new String[] {};

    }

    @Override
    public String[] getRoleNames() {
        return stream(getRoles()).get(stream -> stream.map(this::decode).toArray(n -> new String[n]));
    }

    @Override
    public String[] getGroupNames() {
        return stream(getGroups()).get(stream -> stream.map(this::decode).toArray(n -> new String[n]));
    }

    private String decode(final String value) {

                .map(s -> s.substring(1))
                .toArray(n -> new String[n]));
    }

    @Override
    public String[] getGroupNames() {
        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        return stream(getPermissions()).get(stream -> stream.filter(s -> s.startsWith(fessConfig.getRoleSearchGroupPrefix()))

     * @return Array of role names.
     */
    String[] getRoleNames();

    /**
     * Gets the user's assigned group names.
     * @return Array of group names.
     */
    String[] getGroupNames();

    /**
     * Gets the user's permissions.
     * @return Array of permission strings.
     */
    String[] getPermissions();

    /**
     * Determines if the user's information can be edited.

            return nameId;
        }

        @Override
        public String[] getRoleNames() {
            return roles;
        }

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

        @Override
        public String[] getPermissions() {
            if (permissions == null) {

            return name;
        }

        @Override
        public String[] getRoleNames() {
            return roles;
        }

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

        @Override
        public String[] getPermissions() {
            if (permissions == null) {

        }

        @Override
        public String[] getRoleNames() {
            return roles;
        }

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

        @Override
        public String[] getPermissions() {
            if (permissions == null) {

            return roleNames;
        }

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

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

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

        @Override

            return name;
        }

        @Override
        public String[] getRoleNames() {
            return new String[0];
        }

        @Override
        public String[] getGroupNames() {
            return new String[0];
        }

        @Override
        public String[] getPermissions() {
            return permissions;
        }
    }

            return name;
        }

        @Override
        public String[] getRoleNames() {
            return new String[0];
        }

        @Override
        public String[] getGroupNames() {
            return new String[0];
        }

        @Override
        public String[] getPermissions() {
            return permissions;
        }

    }

    @Test