gradeimporter/libs/testlib.php

<?php
// This file is part of
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.

// This cannot go to production

function reset_submissions($contextid) {

    global $DB;
    // Remove data from gradeimporter_submission and gradeimporter_feedback tables
    $DB->delete_records('gradeimporter_submission');
    $DB->delete_records('gradeimporter_feedback');
    // Delete feedbackfiles
    $fs = get_file_storage();
    $fs->delete_area_files($contextid, 'mod_gradeimporter', 'submissionfiles');
}