Proyectos de Subversion Moodle

<?php

// This file is part of Moodle - http://moodle.org/

//

// 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/>.

namespace core_backup;

use backup;

defined('MOODLE_INTERNAL') || die();

global $CFG;

require_once($CFG->dirroot . '/backup/util/includes/backup_includes.php');

require_once($CFG->dirroot . '/backup/util/includes/restore_includes.php');

require_once($CFG->libdir . '/completionlib.php');

/**

 * Course copy tests.

 *

 * @package    core_backup

 * @copyright  2020 onward The Moodle Users Association <https://moodleassociation.org/>

 * @author     Matt Porritt <mattp@catalyst-au.net>

 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later

 * @coversDefaultClass \copy_helper

 */

class copy_helper_test extends \advanced_testcase {

    /**

     *

     * @var \stdClass Course used for testing.

     */

    protected $course;

    /**

     *

     * @var int User used to perform backups.

     */

    protected $userid;

    /**

     *

     * @var array Ids of users in test course.

     */

    protected $courseusers;

    /**

     *

     * @var array Names of the created activities.

     */

    protected $activitynames;

    /**

     * Set up tasks for all tests.

     */

    protected function setUp(): void {

        global $DB, $CFG, $USER;

        $this->resetAfterTest(true);

        $CFG->enableavailability = true;

        $CFG->enablecompletion = true;

        // Create a course with some availability data set.

        $generator = $this->getDataGenerator();

        $course = $generator->create_course(

            array('format' => 'topics', 'numsections' => 3,

                'enablecompletion' => COMPLETION_ENABLED),

            array('createsections' => true));

        $forum = $generator->create_module('forum', array(

            'course' => $course->id));

        $forum2 = $generator->create_module('forum', array(

            'course' => $course->id, 'completion' => COMPLETION_TRACKING_MANUAL));

        // We need a grade, easiest is to add an assignment.

        $assignrow = $generator->create_module('assign', array(

            'course' => $course->id));

        $assign = new \assign(\context_module::instance($assignrow->cmid), false, false);

        $item = $assign->get_grade_item();

        // Make a test grouping as well.

        $grouping = $generator->create_grouping(array('courseid' => $course->id,

            'name' => 'Grouping!'));

        // Create some users.

        $user1 = $generator->create_user();

        $user2 = $generator->create_user();

        $user3 = $generator->create_user();

        $user4 = $generator->create_user();

        $this->courseusers = array(

            $user1->id, $user2->id, $user3->id, $user4->id

        );

        // Enrol users into the course.

        $generator->enrol_user($user1->id, $course->id, 'student');

        $generator->enrol_user($user2->id, $course->id, 'editingteacher');

        $generator->enrol_user($user3->id, $course->id, 'manager');

        $generator->enrol_user($user4->id, $course->id, 'editingteacher');

        $generator->enrol_user($user4->id, $course->id, 'manager');

        $availability = '{"op":"|","show":false,"c":[' .

            '{"type":"completion","cm":' . $forum2->cmid .',"e":1},' .

            '{"type":"grade","id":' . $item->id . ',"min":4,"max":94},' .

            '{"type":"grouping","id":' . $grouping->id . '}' .

            ']}';

        $DB->set_field('course_modules', 'availability', $availability, array(

            'id' => $forum->cmid));

        $DB->set_field('course_sections', 'availability', $availability, array(

            'course' => $course->id, 'section' => 1));

        // Add some user data to the course.

        $discussion = $generator->get_plugin_generator('mod_forum')->create_discussion(['course' => $course->id,

            'forum' => $forum->id, 'userid' => $user1->id, 'timemodified' => time(),

            'name' => 'Frog']);

        $generator->get_plugin_generator('mod_forum')->create_post(['discussion' => $discussion->id, 'userid' => $user1->id]);

        $this->course  = $course;

        $this->userid = $USER->id; // Admin.

        $this->activitynames = array(

            $forum->name,

            $forum2->name,

            $assignrow->name

        );

        // Set the user doing the backup to be a manager in the course.

        // By default Managers can restore courses AND users, teachers can only do users.

        $this->setUser($user3);

        // Disable all loggers.

        $CFG->backup_error_log_logger_level = backup::LOG_NONE;

        $CFG->backup_output_indented_logger_level = backup::LOG_NONE;

        $CFG->backup_file_logger_level = backup::LOG_NONE;

        $CFG->backup_database_logger_level = backup::LOG_NONE;

        $CFG->backup_file_logger_level_extra = backup::LOG_NONE;

    }

    /**

     * Test process form data with invalid data.

     *

     * @covers ::process_formdata

     */

    public function test_process_formdata_missing_fields(): void {

        $this->expectException(\moodle_exception::class);

        \copy_helper::process_formdata(new \stdClass);

    }

    /**

     * Test processing form data.

     *

     * @covers ::process_formdata

     */

    public function test_process_formdata(): void {

        $validformdata = [

            'courseid' => 1729,

            'fullname' => 'Taxicab Numbers',

            'shortname' => 'Taxi101',

            'category' => 2,

            'visible' => 1,

            'startdate' => 87539319,

            'enddate' => 6963472309248,

            'idnumber' => 1730,

            'userdata' => 1

        ];

        $roles = [

            'role_one' => 1,

            'role_two' => 2,

            'role_three' => 0

        ];

        $expected = (object)array_merge($validformdata, ['keptroles' => []]);

        $expected->keptroles = [1, 2];

        $processed = \copy_helper::process_formdata(

            (object)array_merge(

                $validformdata,

                $roles,

                ['extra' => 'stuff', 'remove' => 'this'])

        );

        $this->assertEquals($expected, $processed);

    }

    /**

     * Test orphaned controller cleanup.

     *

     * @covers ::cleanup_orphaned_copy_controllers

     */

    public function test_cleanup_orphaned_copy_controllers(): void {

        global $DB;

        // Mock up the form data.

        $formdata = new \stdClass;

        $formdata->courseid = $this->course->id;

        $formdata->fullname = 'foo';

        $formdata->shortname = 'data1';

        $formdata->category = 1;

        $formdata->visible = 1;

        $formdata->startdate = 1582376400;

        $formdata->enddate = 0;

        $formdata->idnumber = 123;

        $formdata->userdata = 1;

        $formdata->role_1 = 1;

        $formdata->role_3 = 3;

        $formdata->role_5 = 5;

        $copies = [];

        for ($i = 0; $i < 5; $i++) {

            $formdata->shortname = 'data' . $i;

            $copies[] = \copy_helper::create_copy($formdata);

        }

        // Delete one of the restore controllers. Simulates a situation where copy creation

        // interrupted and the restore controller never gets created.

        $DB->delete_records('backup_controllers', ['backupid' => $copies[0]['restoreid']]);

        // Set a backup/restore controller pair to be in an intermediate state.

        \backup_controller::load_controller($copies[2]['backupid'])->set_status(backup::STATUS_FINISHED_OK);

        // Set a backup/restore controller pair to completed.

        \backup_controller::load_controller($copies[3]['backupid'])->set_status(backup::STATUS_FINISHED_OK);

        \restore_controller::load_controller($copies[3]['restoreid'])->set_status(backup::STATUS_FINISHED_OK);

        // Set a backup/restore controller pair to have a failed backup.

        \backup_controller::load_controller($copies[4]['backupid'])->set_status(backup::STATUS_FINISHED_ERR);

        // Create some backup/restore controllers that are unrelated to course copies.

        $bc = new \backup_controller(backup::TYPE_1COURSE, 1, backup::FORMAT_MOODLE, backup::INTERACTIVE_NO, backup::MODE_ASYNC,

                2, backup::RELEASESESSION_YES);

        $rc = new \restore_controller('restore-test-1729', 1, backup::INTERACTIVE_NO, backup::MODE_ASYNC, 1, 2);

        $rc->save_controller();

        $unrelatedvanillacontrollers = ['backupid' => $bc->get_backupid(), 'restoreid' => $rc->get_restoreid()];

        $bc = new \backup_controller(backup::TYPE_1COURSE, 1, backup::FORMAT_MOODLE, backup::INTERACTIVE_NO, backup::MODE_ASYNC,

                2, backup::RELEASESESSION_YES);

        $rc = new \restore_controller('restore-test-1729', 1, backup::INTERACTIVE_NO, backup::MODE_ASYNC, 1, 2);

        $bc->set_status(backup::STATUS_FINISHED_OK);

        $rc->set_status(backup::STATUS_FINISHED_OK);

        $unrelatedfinishedcontrollers = ['backupid' => $bc->get_backupid(), 'restoreid' => $rc->get_restoreid()];

        $bc = new \backup_controller(backup::TYPE_1COURSE, 1, backup::FORMAT_MOODLE, backup::INTERACTIVE_NO, backup::MODE_ASYNC,

                2, backup::RELEASESESSION_YES);

        $rc = new \restore_controller('restore-test-1729', 1, backup::INTERACTIVE_NO, backup::MODE_ASYNC, 1, 2);

        $bc->set_status(backup::STATUS_FINISHED_ERR);

        $rc->set_status(backup::STATUS_FINISHED_ERR);

        $unrelatedfailedcontrollers = ['backupid' => $bc->get_backupid(), 'restoreid' => $rc->get_restoreid()];

        // Clean up the backup_controllers table.

        $records = $DB->get_records('backup_controllers', null, '', 'id, backupid, status, operation, purpose, timecreated');

        \copy_helper::cleanup_orphaned_copy_controllers($records, 0);

        // Retrieve them again and check.

        $records = $DB->get_records('backup_controllers', null, '', 'backupid, status');

        // Verify the backup associated with the deleted restore is marked as failed.

        $this->assertEquals(backup::STATUS_FINISHED_ERR, $records[$copies[0]['backupid']]->status);

        // Verify other controllers remain untouched.

        $this->assertEquals(backup::STATUS_AWAITING, $records[$copies[1]['backupid']]->status);

        $this->assertEquals(backup::STATUS_REQUIRE_CONV, $records[$copies[1]['restoreid']]->status);

        $this->assertEquals(backup::STATUS_FINISHED_OK, $records[$copies[2]['backupid']]->status);

        $this->assertEquals(backup::STATUS_REQUIRE_CONV, $records[$copies[2]['restoreid']]->status);

        $this->assertEquals(backup::STATUS_FINISHED_OK, $records[$copies[3]['restoreid']]->status);

        $this->assertEquals(backup::STATUS_FINISHED_OK, $records[$copies[3]['backupid']]->status);

        // Verify that the restore associated with the failed backup is also marked as failed.

        $this->assertEquals(backup::STATUS_FINISHED_ERR, $records[$copies[4]['restoreid']]->status);

        // Verify that the unrelated controllers remain unchanged.

        $this->assertEquals(backup::STATUS_AWAITING, $records[$unrelatedvanillacontrollers['backupid']]->status);

        $this->assertEquals(backup::STATUS_REQUIRE_CONV, $records[$unrelatedvanillacontrollers['restoreid']]->status);

        $this->assertEquals(backup::STATUS_FINISHED_OK, $records[$unrelatedfinishedcontrollers['backupid']]->status);

        $this->assertEquals(backup::STATUS_FINISHED_OK, $records[$unrelatedfinishedcontrollers['restoreid']]->status);

        $this->assertEquals(backup::STATUS_FINISHED_ERR, $records[$unrelatedfailedcontrollers['backupid']]->status);

        $this->assertEquals(backup::STATUS_FINISHED_ERR, $records[$unrelatedfailedcontrollers['restoreid']]->status);

    }

    /**

     * Test creating a course copy.

     *

     * @covers ::create_copy

     */

    public function test_create_copy(): void {

        // Mock up the form data.

        $formdata = new \stdClass;

        $formdata->courseid = $this->course->id;

        $formdata->fullname = 'foo';

        $formdata->shortname = 'bar';

        $formdata->category = 1;

        $formdata->visible = 1;

        $formdata->startdate = 1582376400;

        $formdata->enddate = 0;

        $formdata->idnumber = 123;

        $formdata->userdata = 1;

        $formdata->role_1 = 1;

        $formdata->role_3 = 3;

        $formdata->role_5 = 5;

        $copydata = \copy_helper::process_formdata($formdata);

        $result = \copy_helper::create_copy($copydata);

        // Load the controllers, to extract the data we need.

        $bc = \backup_controller::load_controller($result['backupid']);

        $rc = \restore_controller::load_controller($result['restoreid']);

        // Check the backup controller.

        $this->assertEquals(backup::MODE_COPY, $bc->get_mode());

        $this->assertEquals($this->course->id, $bc->get_courseid());

        $this->assertEquals(backup::TYPE_1COURSE, $bc->get_type());

        // Check the restore controller.

        $newcourseid = $rc->get_courseid();

        $newcourse = get_course($newcourseid);

        $this->assertEquals(get_string('copyingcourse', 'backup'), $newcourse->fullname);

        $this->assertEquals(get_string('copyingcourseshortname', 'backup'), $newcourse->shortname);

        $this->assertEquals(backup::MODE_COPY, $rc->get_mode());

        $this->assertEquals($newcourseid, $rc->get_courseid());

        // Check the created ad-hoc task.

        $now = time();

        $task = \core\task\manager::get_next_adhoc_task($now);

        $this->assertInstanceOf('\\core\\task\\asynchronous_copy_task', $task);

        $this->assertEquals($result, (array)$task->get_custom_data());

        \core\task\manager::adhoc_task_complete($task);

    }

    /**

     * Test getting the current copies.

     *

     * @covers ::get_copies

     */

    public function test_get_copies(): void {

        global $USER;

        // Mock up the form data.

        $formdata = new \stdClass;

        $formdata->courseid = $this->course->id;

        $formdata->fullname = 'foo';

        $formdata->shortname = 'bar';

        $formdata->category = 1;

        $formdata->visible = 1;

        $formdata->startdate = 1582376400;

        $formdata->enddate = 0;

        $formdata->idnumber = '';

        $formdata->userdata = 1;

        $formdata->role_1 = 1;

        $formdata->role_3 = 3;

        $formdata->role_5 = 5;

        $formdata2 = clone($formdata);

        $formdata2->shortname = 'tree';

        // Create some copies.

        $copydata = \copy_helper::process_formdata($formdata);

        $result = \copy_helper::create_copy($copydata);

        // Backup, awaiting.

        $copies = \copy_helper::get_copies($USER->id);

        $this->assertEquals($result['backupid'], $copies[0]->backupid);

        $this->assertEquals($result['restoreid'], $copies[0]->restoreid);

        $this->assertEquals(\backup::STATUS_AWAITING, $copies[0]->status);

        $this->assertEquals(\backup::OPERATION_BACKUP, $copies[0]->operation);

        $bc = \backup_controller::load_controller($result['backupid']);

        // Backup, in progress.

        $bc->set_status(\backup::STATUS_EXECUTING);

        $copies = \copy_helper::get_copies($USER->id);

        $this->assertEquals($result['backupid'], $copies[0]->backupid);

        $this->assertEquals($result['restoreid'], $copies[0]->restoreid);

        $this->assertEquals(\backup::STATUS_EXECUTING, $copies[0]->status);

        $this->assertEquals(\backup::OPERATION_BACKUP, $copies[0]->operation);

        // Restore, ready to process.

        $bc->set_status(\backup::STATUS_FINISHED_OK);

        $copies = \copy_helper::get_copies($USER->id);

        $this->assertEquals(null, $copies[0]->backupid);

        $this->assertEquals($result['restoreid'], $copies[0]->restoreid);

        $this->assertEquals(\backup::STATUS_REQUIRE_CONV, $copies[0]->status);

        $this->assertEquals(\backup::OPERATION_RESTORE, $copies[0]->operation);

        // No records.

        $bc->set_status(\backup::STATUS_FINISHED_ERR);

        $copies = \copy_helper::get_copies($USER->id);

        $this->assertEmpty($copies);

        $copydata2 = \copy_helper::process_formdata($formdata2);

        $result2 = \copy_helper::create_copy($copydata2);

        // Set the second copy to be complete.

        $bc = \backup_controller::load_controller($result2['backupid']);

        $bc->set_status(\backup::STATUS_FINISHED_OK);

        // Set the restore to be finished.

        $rc = \backup_controller::load_controller($result2['restoreid']);

        $rc->set_status(\backup::STATUS_FINISHED_OK);

        // No records.

        $copies = \copy_helper::get_copies($USER->id);

        $this->assertEmpty($copies);

    }

    /**

     * Test getting the current copies when they are in an invalid state.

     *

     * @covers ::get_copies

     */

    public function test_get_copies_invalid_state(): void {

        global $DB, $USER;

        // Mock up the form data.

        $formdata = new \stdClass;

        $formdata->courseid = $this->course->id;

        $formdata->fullname = 'foo';

        $formdata->shortname = 'bar';

        $formdata->category = 1;

        $formdata->visible = 1;

        $formdata->startdate = 1582376400;

        $formdata->enddate = 0;

        $formdata->idnumber = '';

        $formdata->userdata = 1;

        $formdata->role_1 = 1;

        $formdata->role_3 = 3;

        $formdata->role_5 = 5;

        $formdata2 = clone ($formdata);

        $formdata2->shortname = 'tree';

        // Create some copies.

        $copydata = \copy_helper::process_formdata($formdata);

        $result = \copy_helper::create_copy($copydata);

        $copydata2 = \copy_helper::process_formdata($formdata2);

        $result2 = \copy_helper::create_copy($copydata2);

        $copies = \copy_helper::get_copies($USER->id);

        // Verify get_copies gives back both backup controllers.

        $this->assertEqualsCanonicalizing([$result['backupid'], $result2['backupid']], array_column($copies, 'backupid'));

        // Set one of the backup controllers to failed, this should cause it to not be present.

        \backup_controller::load_controller($result['backupid'])->set_status(backup::STATUS_FINISHED_ERR);

        $copies = \copy_helper::get_copies($USER->id);

        // Verify there is only one backup listed, and that it is not the failed one.

        $this->assertEqualsCanonicalizing([$result2['backupid']], array_column($copies, 'backupid'));

        // Set the controller back to awaiting.

        \backup_controller::load_controller($result['backupid'])->set_status(backup::STATUS_AWAITING);

        $copies = \copy_helper::get_copies($USER->id);

        // Verify both backup controllers are back.

        $this->assertEqualsCanonicalizing([$result['backupid'], $result2['backupid']], array_column($copies, 'backupid'));

        // Delete the restore controller for one of the copies, this should cause it to not be present.

        $DB->delete_records('backup_controllers', ['backupid' => $result['restoreid']]);

        $copies = \copy_helper::get_copies($USER->id);

        // Verify there is only one backup listed, and that it is not the failed one.

        $this->assertEqualsCanonicalizing([$result2['backupid']], array_column($copies, 'backupid'));

    }

    /**

     * Test getting the current copies for specific course.

     *

     * @covers ::get_copies

     */

    public function test_get_copies_course(): void {

        global $USER;

        // Mock up the form data.

        $formdata = new \stdClass;

        $formdata->courseid = $this->course->id;

        $formdata->fullname = 'foo';

        $formdata->shortname = 'bar';

        $formdata->category = 1;

        $formdata->visible = 1;

        $formdata->startdate = 1582376400;

        $formdata->enddate = 0;

        $formdata->idnumber = '';

        $formdata->userdata = 1;

        $formdata->role_1 = 1;

        $formdata->role_3 = 3;

        $formdata->role_5 = 5;

        // Create some copies.

        $copydata = \copy_helper::process_formdata($formdata);

        \copy_helper::create_copy($copydata);

        // No copies match this course id.

        $copies = \copy_helper::get_copies($USER->id, ($this->course->id + 1));

        $this->assertEmpty($copies);

    }

    /**

     * Test getting the current copies if course has been deleted.

     *

     * @covers ::get_copies

     */

    public function test_get_copies_course_deleted(): void {

        global $USER;

        // Mock up the form data.

        $formdata = new \stdClass;

        $formdata->courseid = $this->course->id;

        $formdata->fullname = 'foo';

        $formdata->shortname = 'bar';

        $formdata->category = 1;

        $formdata->visible = 1;

        $formdata->startdate = 1582376400;

        $formdata->enddate = 0;

        $formdata->idnumber = '';

        $formdata->userdata = 1;

        $formdata->role_1 = 1;

        $formdata->role_3 = 3;

        $formdata->role_5 = 5;

        // Create some copies.

        $copydata = \copy_helper::process_formdata($formdata);

        \copy_helper::create_copy($copydata);

        delete_course($this->course->id, false);

        // No copies match this course id as it has been deleted.

        $copies = \copy_helper::get_copies($USER->id, ($this->course->id));

        $this->assertEmpty($copies);

    }

    /**

     * Test course copy.

     */

    public function test_course_copy(): void {

        global $DB;

        // Mock up the form data.

        $formdata = new \stdClass;

        $formdata->courseid = $this->course->id;

        $formdata->fullname = 'copy course';

        $formdata->shortname = 'copy course short';

        $formdata->category = 1;

        $formdata->visible = 0;

        $formdata->startdate = 1582376400;

        $formdata->enddate = 1582386400;

        $formdata->idnumber = 123;

        $formdata->userdata = 1;

        $formdata->role_1 = 1;

        $formdata->role_3 = 3;

        $formdata->role_5 = 5;

        // Create the course copy records and associated ad-hoc task.

        $copydata = \copy_helper::process_formdata($formdata);

        $copyids = \copy_helper::create_copy($copydata);

        $courseid = $this->course->id;

        // We are expecting trace output during this test.

        $this->expectOutputRegex("/$courseid/");

        // Execute adhoc task.

        $now = time();

        $task = \core\task\manager::get_next_adhoc_task($now);

        $this->assertInstanceOf('\\core\\task\\asynchronous_copy_task', $task);

        $task->execute();

        \core\task\manager::adhoc_task_complete($task);

        $postbackuprec = $DB->get_record('backup_controllers', array('backupid' => $copyids['backupid']));

        $postrestorerec = $DB->get_record('backup_controllers', array('backupid' => $copyids['restoreid']));

        // Check backup was completed successfully.

        $this->assertEquals(backup::STATUS_FINISHED_OK, $postbackuprec->status);

        $this->assertEquals(1.0, $postbackuprec->progress);

        // Check restore was completed successfully.

        $this->assertEquals(backup::STATUS_FINISHED_OK, $postrestorerec->status);

        $this->assertEquals(1.0, $postrestorerec->progress);

        // Check the restored course itself.

        $coursecontext = \context_course::instance($postrestorerec->itemid);

        $users = get_enrolled_users($coursecontext);

        $modinfo = get_fast_modinfo($postrestorerec->itemid);

        $forums = $modinfo->get_instances_of('forum');

        $forum = reset($forums);

        $discussions = forum_get_discussions($forum);

        $course = $modinfo->get_course();

        $this->assertEquals($formdata->startdate, $course->startdate);

        $this->assertEquals($formdata->enddate, $course->enddate);

        $this->assertEquals('copy course', $course->fullname);

        $this->assertEquals('copy course short',  $course->shortname);

        $this->assertEquals(0,  $course->visible);

        $this->assertEquals(123,  $course->idnumber);

        foreach ($modinfo->get_cms() as $cm) {

            $this->assertContains($cm->get_formatted_name(), $this->activitynames);

        }

        foreach ($this->courseusers as $user) {

            $this->assertEquals($user, $users[$user]->id);

        }

        $this->assertEquals(count($this->courseusers), count($users));

        $this->assertEquals(2, count($discussions));

    }

    /**

     * Test course copy, not including any users (or data).

     */

    public function test_course_copy_no_users(): void {

        global $DB;

        // Mock up the form data.

        $formdata = new \stdClass;

        $formdata->courseid = $this->course->id;

        $formdata->fullname = 'copy course';

        $formdata->shortname = 'copy course short';

        $formdata->category = 1;

        $formdata->visible = 0;

        $formdata->startdate = 1582376400;

        $formdata->enddate = 1582386400;

        $formdata->idnumber = 123;

        $formdata->userdata = 1;

        $formdata->role_1 = 0;

        $formdata->role_3 = 0;

        $formdata->role_5 = 0;

        // Create the course copy records and associated ad-hoc task.

        $copydata = \copy_helper::process_formdata($formdata);

        $copyids = \copy_helper::create_copy($copydata);

        $courseid = $this->course->id;

        // We are expecting trace output during this test.

        $this->expectOutputRegex("/$courseid/");

        // Execute adhoc task.

        $now = time();

        $task = \core\task\manager::get_next_adhoc_task($now);

        $this->assertInstanceOf('\\core\\task\\asynchronous_copy_task', $task);

        $task->execute();

        \core\task\manager::adhoc_task_complete($task);

        $postrestorerec = $DB->get_record('backup_controllers', array('backupid' => $copyids['restoreid']));

        // Check the restored course itself.

        $coursecontext = \context_course::instance($postrestorerec->itemid);

        $users = get_enrolled_users($coursecontext);

        $modinfo = get_fast_modinfo($postrestorerec->itemid);

        $forums = $modinfo->get_instances_of('forum');

        $forum = reset($forums);

        $discussions = forum_get_discussions($forum);

        $course = $modinfo->get_course();

        $this->assertEquals($formdata->startdate, $course->startdate);

        $this->assertEquals($formdata->enddate, $course->enddate);

        $this->assertEquals('copy course', $course->fullname);

        $this->assertEquals('copy course short',  $course->shortname);

        $this->assertEquals(0,  $course->visible);

        $this->assertEquals(123,  $course->idnumber);

        foreach ($modinfo->get_cms() as $cm) {

            $this->assertContains($cm->get_formatted_name(), $this->activitynames);

        }

        // Should be no discussions as the user that made them wasn't included.

        $this->assertEquals(0, count($discussions));

        // There should only be one user in the new course, and that's the user who did the copy.

        $this->assertEquals(1, count($users));

        $this->assertEquals($this->courseusers[2], $users[$this->courseusers[2]]->id);

    }

    /**

     * Test course copy, including students and their data.

     */

    public function test_course_copy_students_data(): void {

        global $DB;

        // Mock up the form data.

        $formdata = new \stdClass;

        $formdata->courseid = $this->course->id;

        $formdata->fullname = 'copy course';

        $formdata->shortname = 'copy course short';

        $formdata->category = 1;

        $formdata->visible = 0;

        $formdata->startdate = 1582376400;

        $formdata->enddate = 1582386400;

        $formdata->idnumber = 123;

        $formdata->userdata = 1;

        $formdata->role_1 = 0;

        $formdata->role_3 = 0;

        $formdata->role_5 = 5;

        // Create the course copy records and associated ad-hoc task.

        $copydata = \copy_helper::process_formdata($formdata);

        $copyids = \copy_helper::create_copy($copydata);

        $courseid = $this->course->id;

        // We are expecting trace output during this test.

        $this->expectOutputRegex("/$courseid/");

        // Execute adhoc task.

        $now = time();

        $task = \core\task\manager::get_next_adhoc_task($now);

        $this->assertInstanceOf('\\core\\task\\asynchronous_copy_task', $task);

        $task->execute();

        \core\task\manager::adhoc_task_complete($task);

        $postrestorerec = $DB->get_record('backup_controllers', array('backupid' => $copyids['restoreid']));

        // Check the restored course itself.

        $coursecontext = \context_course::instance($postrestorerec->itemid);

        $users = get_enrolled_users($coursecontext);

        $modinfo = get_fast_modinfo($postrestorerec->itemid);

        $forums = $modinfo->get_instances_of('forum');

        $forum = reset($forums);

        $discussions = forum_get_discussions($forum);

        $course = $modinfo->get_course();

        $this->assertEquals($formdata->startdate, $course->startdate);

        $this->assertEquals($formdata->enddate, $course->enddate);

        $this->assertEquals('copy course', $course->fullname);

        $this->assertEquals('copy course short',  $course->shortname);

        $this->assertEquals(0,  $course->visible);

        $this->assertEquals(123,  $course->idnumber);

        foreach ($modinfo->get_cms() as $cm) {

            $this->assertContains($cm->get_formatted_name(), $this->activitynames);

        }

        // Should be no discussions as the user that made them wasn't included.

        $this->assertEquals(2, count($discussions));

        // There should only be two users in the new course. The copier and one student.

        $this->assertEquals(2, count($users));

        $this->assertEquals($this->courseusers[2], $users[$this->courseusers[2]]->id);

        $this->assertEquals($this->courseusers[0], $users[$this->courseusers[0]]->id);

    }

    /**

     * Test course copy, not including any users (or data).

     */

    public function test_course_copy_no_data(): void {

        global $DB;

        // Mock up the form data.

        $formdata = new \stdClass;

        $formdata->courseid = $this->course->id;

        $formdata->fullname = 'copy course';

        $formdata->shortname = 'copy course short';

        $formdata->category = 1;

        $formdata->visible = 0;

        $formdata->startdate = 1582376400;

        $formdata->enddate = 1582386400;

        $formdata->idnumber = 123;

        $formdata->userdata = 0;

        $formdata->role_1 = 1;

        $formdata->role_3 = 3;

        $formdata->role_5 = 5;

        // Create the course copy records and associated ad-hoc task.

        $copydata = \copy_helper::process_formdata($formdata);

        $copyids = \copy_helper::create_copy($copydata);

        $courseid = $this->course->id;

        // We are expecting trace output during this test.

        $this->expectOutputRegex("/$courseid/");

        // Execute adhoc task.

        $now = time();

        $task = \core\task\manager::get_next_adhoc_task($now);

        $this->assertInstanceOf('\\core\\task\\asynchronous_copy_task', $task);

        $task->execute();

        \core\task\manager::adhoc_task_complete($task);

        $postrestorerec = $DB->get_record('backup_controllers', array('backupid' => $copyids['restoreid']));

        // Check the restored course itself.

        $coursecontext = \context_course::instance($postrestorerec->itemid);

        $users = get_enrolled_users($coursecontext);

        get_fast_modinfo($postrestorerec->itemid, 0, true);

        $modinfo = get_fast_modinfo($postrestorerec->itemid);

        $forums = $modinfo->get_instances_of('forum');

        $forum = reset($forums);

        $discussions = forum_get_discussions($forum);

        $course = $modinfo->get_course();

        $this->assertEquals($formdata->startdate, $course->startdate);

        $this->assertEquals($formdata->enddate, $course->enddate);

        $this->assertEquals('copy course', $course->fullname);

        $this->assertEquals('copy course short',  $course->shortname);

        $this->assertEquals(0,  $course->visible);

        $this->assertEquals(123,  $course->idnumber);

        foreach ($modinfo->get_cms() as $cm) {

            $this->assertContains($cm->get_formatted_name(), $this->activitynames);

        }

        // Should be no discussions as the user data wasn't included.

        $this->assertEquals(0, count($discussions));

        // There should only be all users in the new course.

        $this->assertEquals(count($this->courseusers), count($users));

    }

    /**

     * Test instantiation with incomplete formdata.

     */

    public function test_malformed_instantiation(): void {

        // Mock up the form data, missing things so we get an exception.

        $formdata = new \stdClass;

        $formdata->courseid = $this->course->id;

        $formdata->fullname = 'copy course';

        $formdata->shortname = 'copy course short';

        $formdata->category = 1;

        // Expect and exception as form data is incomplete.

        $this->expectException(\moodle_exception::class);

        $copydata = \copy_helper::process_formdata($formdata);

        \copy_helper::create_copy($copydata);

    }

}