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;

use backup_controller;

use backup_setting;

use restore_controller;

use restore_dbops;

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');

/**

 * Tests for Moodle 2 format backup operation.

 *

 * @package core_backup

 * @copyright 2014 The Open University

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

 */

class moodle2_test extends \advanced_testcase {

    /**

     * Tests the availability field on modules and sections is correctly

     * backed up and restored.

     */

    public function test_backup_availability() {

        global $DB, $CFG;

        $this->resetAfterTest(true);

        $this->setAdminUser();

        $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!'));

        $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));

        // Backup and restore it.

        $newcourseid = $this->backup_and_restore($course);

        // Check settings in new course.

        $modinfo = get_fast_modinfo($newcourseid);

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

        $assigns = array_values($modinfo->get_instances_of('assign'));

        $newassign = new \assign(\context_module::instance($assigns[0]->id), false, false);

        $newitem = $newassign->get_grade_item();

        $newgroupingid = $DB->get_field('groupings', 'id', array('courseid' => $newcourseid));

        // Expected availability should have new ID for the forum, grade, and grouping.

        $newavailability = str_replace(

                '"grouping","id":' . $grouping->id,

                '"grouping","id":' . $newgroupingid,

                str_replace(

                    '"grade","id":' . $item->id,

                    '"grade","id":' . $newitem->id,

                    str_replace(

                        '"cm":' . $forum2->cmid,

                        '"cm":' . $forums[1]->id,

                        $availability)));

        $this->assertEquals($newavailability, $forums[0]->availability);

        $this->assertNull($forums[1]->availability);

        $this->assertEquals($newavailability, $modinfo->get_section_info(1, MUST_EXIST)->availability);

        $this->assertNull($modinfo->get_section_info(2, MUST_EXIST)->availability);

    }

    /**

     * The availability data format was changed in Moodle 2.7. This test

     * ensures that a Moodle 2.6 backup with this data can still be correctly

     * restored.

     */

    public function test_restore_legacy_availability() {

        global $DB, $USER, $CFG;

        require_once($CFG->dirroot . '/grade/querylib.php');

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

        $this->resetAfterTest(true);

        $this->setAdminUser();

        $CFG->enableavailability = true;

        $CFG->enablecompletion = true;

        // Extract backup file.

        $backupid = 'abc';

        $backuppath = make_backup_temp_directory($backupid);

        get_file_packer('application/vnd.moodle.backup')->extract_to_pathname(

                __DIR__ . '/fixtures/availability_26_format.mbz', $backuppath);

        // Do restore to new course with default settings.

        $generator = $this->getDataGenerator();

        $categoryid = $DB->get_field_sql("SELECT MIN(id) FROM {course_categories}");

        $newcourseid = restore_dbops::create_new_course(

                'Test fullname', 'Test shortname', $categoryid);

        $rc = new restore_controller($backupid, $newcourseid,

                backup::INTERACTIVE_NO, backup::MODE_GENERAL, $USER->id,

                backup::TARGET_NEW_COURSE);

        $thrown = null;

        try {

            $this->assertTrue($rc->execute_precheck());

            $rc->execute_plan();

            $rc->destroy();

        } catch (Exception $e) {

            $thrown = $e;

            // Because of the PHPUnit exception behaviour in this situation, we

            // will not see this message unless it is explicitly echoed (just

            // using it in a fail() call or similar will not work).

            echo "\n\nEXCEPTION: " . $thrown->getMessage() . '[' .

                    $thrown->getFile() . ':' . $thrown->getLine(). "]\n\n";

        }

        $this->assertNull($thrown);

        // Get information about the resulting course and check that it is set

        // up correctly.

        $modinfo = get_fast_modinfo($newcourseid);

        $pages = array_values($modinfo->get_instances_of('page'));

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

        $quizzes = array_values($modinfo->get_instances_of('quiz'));

        $grouping = $DB->get_record('groupings', array('courseid' => $newcourseid));

        // FROM date.

        $this->assertEquals(

                '{"op":"&","showc":[true],"c":[{"type":"date","d":">=","t":1893456000}]}',

                $pages[1]->availability);

        // UNTIL date.

        $this->assertEquals(

                '{"op":"&","showc":[false],"c":[{"type":"date","d":"<","t":1393977600}]}',

                $pages[2]->availability);

        // FROM and UNTIL.

        $this->assertEquals(

                '{"op":"&","showc":[true,false],"c":[' .

                '{"type":"date","d":">=","t":1449705600},' .

                '{"type":"date","d":"<","t":1893456000}' .

                ']}',

                $pages[3]->availability);

        // Grade >= 75%.

        $grades = array_values(grade_get_grade_items_for_activity($quizzes[0], true));

        $gradeid = $grades[0]->id;

        $coursegrade = \grade_item::fetch_course_item($newcourseid);

        $this->assertEquals(

                '{"op":"&","showc":[true],"c":[{"type":"grade","id":' . $gradeid . ',"min":75}]}',

                $pages[4]->availability);

        // Grade < 25%.

        $this->assertEquals(

                '{"op":"&","showc":[true],"c":[{"type":"grade","id":' . $gradeid . ',"max":25}]}',

                $pages[5]->availability);

        // Grade 90-100%.

        $this->assertEquals(

                '{"op":"&","showc":[true],"c":[{"type":"grade","id":' . $gradeid . ',"min":90,"max":100}]}',

                $pages[6]->availability);

        // Email contains frog.

        $this->assertEquals(

                '{"op":"&","showc":[true],"c":[{"type":"profile","op":"contains","sf":"email","v":"frog"}]}',

                $pages[7]->availability);

        // Page marked complete..

        $this->assertEquals(

                '{"op":"&","showc":[true],"c":[{"type":"completion","cm":' . $pages[0]->id .

                ',"e":' . COMPLETION_COMPLETE . '}]}',

                $pages[8]->availability);

        // Quiz complete but failed.

        $this->assertEquals(

                '{"op":"&","showc":[true],"c":[{"type":"completion","cm":' . $quizzes[0]->id .

                ',"e":' . COMPLETION_COMPLETE_FAIL . '}]}',

                $pages[9]->availability);

        // Quiz complete and succeeded.

        $this->assertEquals(

                '{"op":"&","showc":[true],"c":[{"type":"completion","cm":' . $quizzes[0]->id .

                ',"e":' . COMPLETION_COMPLETE_PASS. '}]}',

                $pages[10]->availability);

        // Quiz not complete.

        $this->assertEquals(

                '{"op":"&","showc":[true],"c":[{"type":"completion","cm":' . $quizzes[0]->id .

                ',"e":' . COMPLETION_INCOMPLETE . '}]}',

                $pages[11]->availability);

        // Grouping.

        $this->assertEquals(

                '{"op":"&","showc":[false],"c":[{"type":"grouping","id":' . $grouping->id . '}]}',

                $pages[12]->availability);

        // All the options.

        $this->assertEquals('{"op":"&",' .

                '"showc":[false,true,false,true,true,true,true,true,true],' .

                '"c":[' .

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

                '{"type":"date","d":">=","t":1488585600},' .

                '{"type":"date","d":"<","t":1709510400},' .

                '{"type":"profile","op":"contains","sf":"email","v":"@"},' .

                '{"type":"profile","op":"contains","sf":"city","v":"Frogtown"},' .

                '{"type":"grade","id":' . $gradeid . ',"min":30,"max":35},' .

                '{"type":"grade","id":' . $coursegrade->id . ',"min":5,"max":10},' .

                '{"type":"completion","cm":' . $pages[0]->id . ',"e":' . COMPLETION_COMPLETE . '},' .

                '{"type":"completion","cm":' . $quizzes[0]->id .',"e":' . COMPLETION_INCOMPLETE . '}' .

                ']}', $pages[13]->availability);

        // Group members only forum.

        $this->assertEquals(

                '{"op":"&","showc":[false],"c":[{"type":"group"}]}',

                $forums[0]->availability);

        // Section with lots of conditions.

        $this->assertEquals(

                '{"op":"&","showc":[false,false,false,false],"c":[' .

                '{"type":"date","d":">=","t":1417737600},' .

                '{"type":"profile","op":"contains","sf":"email","v":"@"},' .

                '{"type":"grade","id":' . $gradeid . ',"min":20},' .

                '{"type":"completion","cm":' . $pages[0]->id . ',"e":' . COMPLETION_COMPLETE . '}]}',

                $modinfo->get_section_info(3)->availability);

        // Section with grouping.

        $this->assertEquals(

                '{"op":"&","showc":[false],"c":[{"type":"grouping","id":' . $grouping->id . '}]}',

                $modinfo->get_section_info(4)->availability);

    }

    /**

     * Tests the backup and restore of single activity to same course (duplicate)

     * when it contains availability conditions that depend on other items in

     * course.

     */

    public function test_duplicate_availability() {

        global $DB, $CFG;

        $this->resetAfterTest(true);

        $this->setAdminUser();

        $CFG->enableavailability = true;

        $CFG->enablecompletion = true;

        // Create a course with completion enabled and 2 forums.

        $generator = $this->getDataGenerator();

        $course = $generator->create_course(

                array('format' => 'topics', 'enablecompletion' => COMPLETION_ENABLED));

        $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 group and grouping as well.

        $group = $generator->create_group(array('courseid' => $course->id,

                'name' => 'Group!'));

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

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

        // Set the forum to have availability conditions on all those things,

        // plus some that don't exist or are special values.

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

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

                '{"type":"completion","cm":99999999,"e":1},' .

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

                '{"type":"grade","id":99999998,"min":4,"max":94},' .

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

                '{"type":"grouping","id":99999997},' .

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

                '{"type":"group"},' .

                '{"type":"group","id":99999996}' .

                ']}';

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

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

        // Duplicate it.

        $newcmid = $this->duplicate($course, $forum->cmid);

        // For those which still exist on the course we expect it to keep using

        // the real ID. For those which do not exist on the course any more

        // (e.g. simulating backup/restore of single activity between 2 courses)

        // we expect the IDs to be replaced with marker value: 0 for cmid

        // and grade, -1 for group/grouping.

        $expected = str_replace(

                array('99999999', '99999998', '99999997', '99999996'),

                array(0, 0, -1, -1),

                $availability);

        // Check settings in new activity.

        $actual = $DB->get_field('course_modules', 'availability', array('id' => $newcmid));

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

    }

    /**

     * When restoring a course, you can change the start date, which shifts other

     * dates. This test checks that certain dates are correctly modified.

     */

    public function test_restore_dates() {

        global $DB, $CFG;

        $this->resetAfterTest(true);

        $this->setAdminUser();

        $CFG->enableavailability = true;

        // Create a course with specific start date.

        $generator = $this->getDataGenerator();

        $course = $generator->create_course(array(

            'startdate' => strtotime('1 Jan 2014 00:00 GMT'),

            'enddate' => strtotime('3 Aug 2014 00:00 GMT')

        ));

        // Add a forum with conditional availability date restriction, including

        // one of them nested inside a tree.

        $availability = '{"op":"&","showc":[true,true],"c":[' .

                '{"op":"&","c":[{"type":"date","d":">=","t":DATE1}]},' .

                '{"type":"date","d":"<","t":DATE2}]}';

        $before = str_replace(

                array('DATE1', 'DATE2'),

                array(strtotime('1 Feb 2014 00:00 GMT'), strtotime('10 Feb 2014 00:00 GMT')),

                $availability);

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

                'availability' => $before));

        // Add an assign with defined start date.

        $assign = $generator->create_module('assign', array('course' => $course->id,

                'allowsubmissionsfromdate' => strtotime('7 Jan 2014 16:00 GMT')));

        // Do backup and restore.

        $newcourseid = $this->backup_and_restore($course, strtotime('3 Jan 2015 00:00 GMT'));

        $newcourse = $DB->get_record('course', array('id' => $newcourseid));

        $this->assertEquals(strtotime('5 Aug 2015 00:00 GMT'), $newcourse->enddate);

        $modinfo = get_fast_modinfo($newcourseid);

        // Check forum dates are modified by the same amount as the course start.

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

        $newforum = reset($newforums);

        $after = str_replace(

            array('DATE1', 'DATE2'),

            array(strtotime('3 Feb 2015 00:00 GMT'), strtotime('12 Feb 2015 00:00 GMT')),

            $availability);

        $this->assertEquals($after, $newforum->availability);

        // Check assign date.

        $newassigns = $modinfo->get_instances_of('assign');

        $newassign = reset($newassigns);

        $this->assertEquals(strtotime('9 Jan 2015 16:00 GMT'), $DB->get_field(

                'assign', 'allowsubmissionsfromdate', array('id' => $newassign->instance)));

    }

    /**

     * Test front page backup/restore and duplicate activities

     * @return void

     */

    public function test_restore_frontpage() {

        global $DB, $CFG, $USER;

        $this->resetAfterTest(true);

        $this->setAdminUser();

        $generator = $this->getDataGenerator();

        $frontpage = $DB->get_record('course', array('id' => SITEID));

        $forum = $generator->create_module('forum', array('course' => $frontpage->id));

        // Activities can be duplicated.

        $this->duplicate($frontpage, $forum->cmid);

        $modinfo = get_fast_modinfo($frontpage);

        $this->assertEquals(2, count($modinfo->get_instances_of('forum')));

        // Front page backup.

        $frontpagebc = new backup_controller(backup::TYPE_1COURSE, $frontpage->id,

                backup::FORMAT_MOODLE, backup::INTERACTIVE_NO, backup::MODE_IMPORT,

                $USER->id);

        $frontpagebackupid = $frontpagebc->get_backupid();

        $frontpagebc->execute_plan();

        $frontpagebc->destroy();

        $course = $generator->create_course();

        $newcourseid = restore_dbops::create_new_course(

                $course->fullname . ' 2', $course->shortname . '_2', $course->category);

        // Other course backup.

        $bc = new backup_controller(backup::TYPE_1COURSE, $course->id,

                backup::FORMAT_MOODLE, backup::INTERACTIVE_NO, backup::MODE_IMPORT,

                $USER->id);

        $otherbackupid = $bc->get_backupid();

        $bc->execute_plan();

        $bc->destroy();

        // We can only restore a front page over the front page.

        $rc = new restore_controller($frontpagebackupid, $course->id,

                backup::INTERACTIVE_NO, backup::MODE_GENERAL, $USER->id,

                backup::TARGET_CURRENT_ADDING);

        $this->assertFalse($rc->execute_precheck());

        $rc->destroy();

        $rc = new restore_controller($frontpagebackupid, $newcourseid,

                backup::INTERACTIVE_NO, backup::MODE_GENERAL, $USER->id,

                backup::TARGET_NEW_COURSE);

        $this->assertFalse($rc->execute_precheck());

        $rc->destroy();

        $rc = new restore_controller($frontpagebackupid, $frontpage->id,

                backup::INTERACTIVE_NO, backup::MODE_GENERAL, $USER->id,

                backup::TARGET_CURRENT_ADDING);

        $this->assertTrue($rc->execute_precheck());

        $rc->execute_plan();

        $rc->destroy();

        // We can't restore a non-front page course on the front page course.

        $rc = new restore_controller($otherbackupid, $frontpage->id,

                backup::INTERACTIVE_NO, backup::MODE_GENERAL, $USER->id,

                backup::TARGET_CURRENT_ADDING);

        $this->assertFalse($rc->execute_precheck());

        $rc->destroy();

        $rc = new restore_controller($otherbackupid, $newcourseid,

                backup::INTERACTIVE_NO, backup::MODE_GENERAL, $USER->id,

                backup::TARGET_NEW_COURSE);

        $this->assertTrue($rc->execute_precheck());

        $rc->execute_plan();

        $rc->destroy();

    }

    /**

     * Backs a course up and restores it.

     *

     * @param \stdClass $course Course object to backup

     * @param int $newdate If non-zero, specifies custom date for new course

     * @param callable|null $inbetween If specified, function that is called before restore

     * @param bool $userdata Whether the backup/restory must be with user data or not.

     * @return int ID of newly restored course

     */

    protected function backup_and_restore($course, $newdate = 0, $inbetween = null, bool $userdata = false) {

        global $USER, $CFG;

        // Turn off file logging, otherwise it can't delete the file (Windows).

        $CFG->backup_file_logger_level = backup::LOG_NONE;

        // Do backup with default settings. MODE_IMPORT means it will just

        // create the directory and not zip it.

        $bc = new backup_controller(backup::TYPE_1COURSE, $course->id,

                backup::FORMAT_MOODLE, backup::INTERACTIVE_NO, backup::MODE_IMPORT,

                $USER->id);

        $bc->get_plan()->get_setting('users')->set_status(backup_setting::NOT_LOCKED);

        $bc->get_plan()->get_setting('users')->set_value($userdata);

        $backupid = $bc->get_backupid();

        $bc->execute_plan();

        $bc->destroy();

        if ($inbetween) {

            $inbetween($backupid);

        }

        // Do restore to new course with default settings.

        $newcourseid = restore_dbops::create_new_course(

                $course->fullname, $course->shortname . '_2', $course->category);

        $rc = new restore_controller($backupid, $newcourseid,

                backup::INTERACTIVE_NO, backup::MODE_GENERAL, $USER->id,

                backup::TARGET_NEW_COURSE);

        if ($newdate) {

            $rc->get_plan()->get_setting('course_startdate')->set_value($newdate);

        }

        $rc->get_plan()->get_setting('users')->set_status(backup_setting::NOT_LOCKED);

        $rc->get_plan()->get_setting('users')->set_value($userdata);

        if ($userdata) {

            $rc->get_plan()->get_setting('xapistate')->set_value(true);

        }

        $this->assertTrue($rc->execute_precheck());

        $rc->execute_plan();

        $rc->destroy();

        return $newcourseid;

    }

    /**

     * Duplicates a single activity within a course.

     *

     * This is based on the code from course/modduplicate.php, but reduced for

     * simplicity.

     *

     * @param \stdClass $course Course object

     * @param int $cmid Activity to duplicate

     * @return int ID of new activity

     */

    protected function duplicate($course, $cmid) {

        global $USER;

        // Do backup.

        $bc = new backup_controller(backup::TYPE_1ACTIVITY, $cmid, backup::FORMAT_MOODLE,

                backup::INTERACTIVE_NO, backup::MODE_IMPORT, $USER->id);

        $backupid = $bc->get_backupid();

        $bc->execute_plan();

        $bc->destroy();

        // Do restore.

        $rc = new restore_controller($backupid, $course->id,

                backup::INTERACTIVE_NO, backup::MODE_IMPORT, $USER->id, backup::TARGET_CURRENT_ADDING);

        $this->assertTrue($rc->execute_precheck());

        $rc->execute_plan();

        // Find cmid.

        $tasks = $rc->get_plan()->get_tasks();

        $cmcontext = \context_module::instance($cmid);

        $newcmid = 0;

        foreach ($tasks as $task) {

            if (is_subclass_of($task, 'restore_activity_task')) {

                if ($task->get_old_contextid() == $cmcontext->id) {

                    $newcmid = $task->get_moduleid();

                    break;

                }

            }

        }

        $rc->destroy();

        if (!$newcmid) {

            throw new \coding_exception('Unexpected: failure to find restored cmid');

        }

        return $newcmid;

    }

    /**

     * Help function for enrolment methods backup/restore tests:

     *

     * - Creates a course ($course), adds self-enrolment method and a user

     * - Makes a backup

     * - Creates a target course (if requested) ($newcourseid)

     * - Initialises restore controller for this backup file ($rc)

     *

     * @param int $target target for restoring: backup::TARGET_NEW_COURSE etc.

     * @param array $additionalcaps - additional capabilities to give to user

     * @return array array of original course, new course id, restore controller: [$course, $newcourseid, $rc]

     */

    protected function prepare_for_enrolments_test($target, $additionalcaps = []) {

        global $CFG, $DB;

        $this->resetAfterTest(true);

        // Turn off file logging, otherwise it can't delete the file (Windows).

        $CFG->backup_file_logger_level = backup::LOG_NONE;

        $user = $this->getDataGenerator()->create_user();

        $roleidcat = create_role('Category role', 'dummyrole1', 'dummy role description');

        $course = $this->getDataGenerator()->create_course();

        // Enable instance of self-enrolment plugin (it should already be present) and enrol a student with it.

        $selfplugin = enrol_get_plugin('self');

        $selfinstance = $DB->get_record('enrol', array('courseid' => $course->id, 'enrol' => 'self'));

        $studentrole = $DB->get_record('role', array('shortname' => 'student'));

        $selfplugin->update_status($selfinstance, ENROL_INSTANCE_ENABLED);

        $selfplugin->enrol_user($selfinstance, $user->id, $studentrole->id);

        // Give current user capabilities to do backup and restore and assign student role.

        $categorycontext = \context_course::instance($course->id)->get_parent_context();

        $caps = array_merge([

            'moodle/course:view',

            'moodle/course:create',

            'moodle/backup:backupcourse',

            'moodle/backup:configure',

            'moodle/backup:backuptargetimport',

            'moodle/restore:restorecourse',

            'moodle/role:assign',

            'moodle/restore:configure',

        ], $additionalcaps);

        foreach ($caps as $cap) {

            assign_capability($cap, CAP_ALLOW, $roleidcat, $categorycontext);

        }

        core_role_set_assign_allowed($roleidcat, $studentrole->id);

        role_assign($roleidcat, $user->id, $categorycontext);

        accesslib_clear_all_caches_for_unit_testing();

        $this->setUser($user);

        // Do backup with default settings. MODE_IMPORT means it will just

        // create the directory and not zip it.

        $bc = new backup_controller(backup::TYPE_1COURSE, $course->id,

            backup::FORMAT_MOODLE, backup::INTERACTIVE_NO, backup::MODE_SAMESITE,

            $user->id);

        $backupid = $bc->get_backupid();

        $backupbasepath = $bc->get_plan()->get_basepath();

        $bc->execute_plan();

        $results = $bc->get_results();

        $file = $results['backup_destination'];

        $bc->destroy();

        // Restore the backup immediately.

        // Check if we need to unzip the file because the backup temp dir does not contains backup files.

        if (!file_exists($backupbasepath . "/moodle_backup.xml")) {

            $file->extract_to_pathname(get_file_packer('application/vnd.moodle.backup'), $backupbasepath);

        }

        if ($target == backup::TARGET_NEW_COURSE) {

            $newcourseid = restore_dbops::create_new_course($course->fullname . '_2',

                $course->shortname . '_2',

                $course->category);

        } else {

            $newcourse = $this->getDataGenerator()->create_course();

            $newcourseid = $newcourse->id;

        }

        $rc = new restore_controller($backupid, $newcourseid,

            backup::INTERACTIVE_NO, backup::MODE_SAMESITE, $user->id, $target);

        return [$course, $newcourseid, $rc];

    }

    /**

     * Backup a course with enrolment methods and restore it without user data and without enrolment methods

     */

    public function test_restore_without_users_without_enrolments() {

        global $DB;

        list($course, $newcourseid, $rc) = $this->prepare_for_enrolments_test(backup::TARGET_NEW_COURSE);

        // Ensure enrolment methods will not be restored without capability.

        $this->assertEquals(backup::ENROL_NEVER, $rc->get_plan()->get_setting('enrolments')->get_value());

        $this->assertEquals(false, $rc->get_plan()->get_setting('users')->get_value());

        $this->assertTrue($rc->execute_precheck());

        $rc->execute_plan();

        $rc->destroy();

        // Self-enrolment method was not enabled, users were not restored.

        $this->assertEmpty($DB->count_records('enrol', ['enrol' => 'self', 'courseid' => $newcourseid,

            'status' => ENROL_INSTANCE_ENABLED]));

        $sql = "select ue.id, ue.userid, e.enrol from {user_enrolments} ue

          join {enrol} e on ue.enrolid = e.id WHERE e.courseid = ?";

        $enrolments = $DB->get_records_sql($sql, [$newcourseid]);

        $this->assertEmpty($enrolments);

    }

    /**

     * Backup a course with enrolment methods and restore it without user data with enrolment methods

     */

    public function test_restore_without_users_with_enrolments() {

        global $DB;

        list($course, $newcourseid, $rc) = $this->prepare_for_enrolments_test(backup::TARGET_NEW_COURSE,

            ['moodle/course:enrolconfig']);

        // Ensure enrolment methods will be restored.

        $this->assertEquals(backup::ENROL_NEVER, $rc->get_plan()->get_setting('enrolments')->get_value());

        $this->assertEquals(false, $rc->get_plan()->get_setting('users')->get_value());

        // Set "Include enrolment methods" to "Always" so they can be restored without users.

        $rc->get_plan()->get_setting('enrolments')->set_value(backup::ENROL_ALWAYS);

        $this->assertTrue($rc->execute_precheck());

        $rc->execute_plan();

        $rc->destroy();

        // Self-enrolment method was restored (it is enabled), users were not restored.

        $enrol = $DB->get_records('enrol', ['enrol' => 'self', 'courseid' => $newcourseid,

            'status' => ENROL_INSTANCE_ENABLED]);

        $this->assertNotEmpty($enrol);

        $sql = "select ue.id, ue.userid, e.enrol from {user_enrolments} ue

            join {enrol} e on ue.enrolid = e.id WHERE e.courseid = ?";

        $enrolments = $DB->get_records_sql($sql, [$newcourseid]);

        $this->assertEmpty($enrolments);

    }

    /**

     * Backup a course with enrolment methods and restore it with user data and without enrolment methods

     */

    public function test_restore_with_users_without_enrolments() {

        global $DB;

        list($course, $newcourseid, $rc) = $this->prepare_for_enrolments_test(backup::TARGET_NEW_COURSE,

            ['moodle/backup:userinfo', 'moodle/restore:userinfo']);

        // Ensure enrolment methods will not be restored without capability.

        $this->assertEquals(backup::ENROL_NEVER, $rc->get_plan()->get_setting('enrolments')->get_value());

        $this->assertEquals(true, $rc->get_plan()->get_setting('users')->get_value());

        global $qwerty;

        $qwerty = 1;

        $this->assertTrue($rc->execute_precheck());

        $rc->execute_plan();

        $rc->destroy();

        $qwerty = 0;

        // Self-enrolment method was not restored, student was restored as manual enrolment.

        $this->assertEmpty($DB->count_records('enrol', ['enrol' => 'self', 'courseid' => $newcourseid,

            'status' => ENROL_INSTANCE_ENABLED]));

        $enrol = $DB->get_record('enrol', ['enrol' => 'manual', 'courseid' => $newcourseid]);

        $this->assertEquals(1, $DB->count_records('user_enrolments', ['enrolid' => $enrol->id]));

    }

    /**

     * Backup a course with enrolment methods and restore it with user data with enrolment methods

     */

    public function test_restore_with_users_with_enrolments() {

        global $DB;

        list($course, $newcourseid, $rc) = $this->prepare_for_enrolments_test(backup::TARGET_NEW_COURSE,

            ['moodle/backup:userinfo', 'moodle/restore:userinfo', 'moodle/course:enrolconfig']);

        // Ensure enrolment methods will be restored.

        $this->assertEquals(backup::ENROL_WITHUSERS, $rc->get_plan()->get_setting('enrolments')->get_value());

        $this->assertEquals(true, $rc->get_plan()->get_setting('users')->get_value());

        $this->assertTrue($rc->execute_precheck());

        $rc->execute_plan();

        $rc->destroy();

        // Self-enrolment method was restored (it is enabled), student was restored.

        $enrol = $DB->get_records('enrol', ['enrol' => 'self', 'courseid' => $newcourseid,

            'status' => ENROL_INSTANCE_ENABLED]);

        $this->assertNotEmpty($enrol);

        $sql = "select ue.id, ue.userid, e.enrol from {user_enrolments} ue

            join {enrol} e on ue.enrolid = e.id WHERE e.courseid = ?";

        $enrolments = $DB->get_records_sql($sql, [$newcourseid]);

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

        $enrolment = reset($enrolments);

        $this->assertEquals('self', $enrolment->enrol);

    }

    /**

     * Backup a course with enrolment methods and restore it with user data with enrolment methods merging into another course

     */

    public function test_restore_with_users_with_enrolments_merging() {

        global $DB;

        list($course, $newcourseid, $rc) = $this->prepare_for_enrolments_test(backup::TARGET_EXISTING_ADDING,

            ['moodle/backup:userinfo', 'moodle/restore:userinfo', 'moodle/course:enrolconfig']);

        // Ensure enrolment methods will be restored.

        $this->assertEquals(backup::ENROL_WITHUSERS, $rc->get_plan()->get_setting('enrolments')->get_value());

        $this->assertEquals(true, $rc->get_plan()->get_setting('users')->get_value());

        $this->assertTrue($rc->execute_precheck());

        $rc->execute_plan();

        $rc->destroy();

        // User was restored with self-enrolment method.

        $enrol = $DB->get_records('enrol', ['enrol' => 'self', 'courseid' => $newcourseid,

            'status' => ENROL_INSTANCE_ENABLED]);

        $this->assertNotEmpty($enrol);

        $sql = "select ue.id, ue.userid, e.enrol from {user_enrolments} ue

            join {enrol} e on ue.enrolid = e.id WHERE e.courseid = ?";

        $enrolments = $DB->get_records_sql($sql, [$newcourseid]);

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

        $enrolment = reset($enrolments);

        $this->assertEquals('self', $enrolment->enrol);

    }

    /**

     * Backup a course with enrolment methods and restore it with user data with enrolment methods into another course deleting it's contents

     */

    public function test_restore_with_users_with_enrolments_deleting() {

        global $DB;

        list($course, $newcourseid, $rc) = $this->prepare_for_enrolments_test(backup::TARGET_EXISTING_DELETING,

            ['moodle/backup:userinfo', 'moodle/restore:userinfo', 'moodle/course:enrolconfig']);

        // Ensure enrolment methods will be restored.

        $this->assertEquals(backup::ENROL_WITHUSERS, $rc->get_plan()->get_setting('enrolments')->get_value());

        $this->assertEquals(true, $rc->get_plan()->get_setting('users')->get_value());

        $this->assertTrue($rc->execute_precheck());

        $rc->execute_plan();

        $rc->destroy();

        // Self-enrolment method was restored (it is enabled), student was restored.

        $enrol = $DB->get_records('enrol', ['enrol' => 'self', 'courseid' => $newcourseid,

            'status' => ENROL_INSTANCE_ENABLED]);

        $this->assertNotEmpty($enrol);

        $sql = "select ue.id, ue.userid, e.enrol from {user_enrolments} ue

            join {enrol} e on ue.enrolid = e.id WHERE e.courseid = ?";

        $enrolments = $DB->get_records_sql($sql, [$newcourseid]);

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

        $enrolment = reset($enrolments);

        $this->assertEquals('self', $enrolment->enrol);

    }

    /**

     * Test the block instance time fields (timecreated, timemodified) through a backup and restore.

     */

    public function test_block_instance_times_backup() {

        global $DB;

        $this->resetAfterTest();

        $this->setAdminUser();

        $generator = $this->getDataGenerator();

        // Create course and add HTML block.

        $course = $generator->create_course();

        $context = \context_course::instance($course->id);

        $page = new \moodle_page();

        $page->set_context($context);

        $page->set_course($course);

        $page->set_pagelayout('standard');

        $page->set_pagetype('course-view');

        $page->blocks->load_blocks();

        $page->blocks->add_block_at_end_of_default_region('html');

        // Update (hack in database) timemodified and timecreated to specific values for testing.

        $blockdata = $DB->get_record('block_instances',

                ['blockname' => 'html', 'parentcontextid' => $context->id]);

        $originalblockid = $blockdata->id;

        $blockdata->timecreated = 12345;

        $blockdata->timemodified = 67890;

        $DB->update_record('block_instances', $blockdata);

        // Do backup and restore.

        $newcourseid = $this->backup_and_restore($course);

        // Confirm that values were transferred correctly into HTML block on new course.

        $newcontext = \context_course::instance($newcourseid);

        $blockdata = $DB->get_record('block_instances',

                ['blockname' => 'html', 'parentcontextid' => $newcontext->id]);

        $this->assertEquals(12345, $blockdata->timecreated);

        $this->assertEquals(67890, $blockdata->timemodified);

        // Simulate what happens with an older backup that doesn't have those fields, by removing

        // them from the backup before doing a restore.

        $before = time();

        $newcourseid = $this->backup_and_restore($course, 0, function($backupid) use($originalblockid) {

            global $CFG;

            $path = $CFG->dataroot . '/temp/backup/' . $backupid . '/course/blocks/html_' .

                    $originalblockid . '/block.xml';

            $xml = file_get_contents($path);

            $xml = preg_replace('~<timecreated>.*?</timemodified>~s', '', $xml);

            file_put_contents($path, $xml);

        });

        $after = time();

        // The fields not specified should default to current time.

        $newcontext = \context_course::instance($newcourseid);

        $blockdata = $DB->get_record('block_instances',

                ['blockname' => 'html', 'parentcontextid' => $newcontext->id]);

        $this->assertTrue($before <= $blockdata->timecreated && $after >= $blockdata->timecreated);

        $this->assertTrue($before <= $blockdata->timemodified && $after >= $blockdata->timemodified);

    }

    /**

     * When you restore a site with global search (or search indexing) turned on, then it should

     * add entries to the search index requests table so that the data gets indexed.

     */

    public function test_restore_search_index_requests() {

        global $DB, $CFG, $USER;

        $this->resetAfterTest(true);

        $this->setAdminUser();

        $CFG->enableglobalsearch = true;

        // Create a course.

        $generator = $this->getDataGenerator();

        $course = $generator->create_course();

        // Add a forum.

        $forum = $generator->create_module('forum', ['course' => $course->id]);

        // Add a block.

        $context = \context_course::instance($course->id);

        $page = new \moodle_page();

        $page->set_context($context);

        $page->set_course($course);

        $page->set_pagelayout('standard');

        $page->set_pagetype('course-view');

        $page->blocks->load_blocks();

        $page->blocks->add_block_at_end_of_default_region('html');

        // Initially there should be no search index requests.

        $this->assertEquals(0, $DB->count_records('search_index_requests'));

        // Do backup and restore.

        $newcourseid = $this->backup_and_restore($course);

        // Now the course should be requested for index (all search areas).

        $newcontext = \context_course::instance($newcourseid);

        $requests = array_values($DB->get_records('search_index_requests'));

        $this->assertCount(1, $requests);

        $this->assertEquals($newcontext->id, $requests[0]->contextid);

        $this->assertEquals('', $requests[0]->searcharea);

        get_fast_modinfo($newcourseid);

        // Backup the new course...

        $CFG->backup_file_logger_level = backup::LOG_NONE;

        $bc = new backup_controller(backup::TYPE_1COURSE, $newcourseid,

                backup::FORMAT_MOODLE, backup::INTERACTIVE_NO, backup::MODE_IMPORT,

                $USER->id);

        $backupid = $bc->get_backupid();

        $bc->execute_plan();

        $bc->destroy();

        // Restore it on top of old course (should duplicate the forum).

        $rc = new restore_controller($backupid, $course->id,

                backup::INTERACTIVE_NO, backup::MODE_GENERAL, $USER->id,

                backup::TARGET_EXISTING_ADDING);

        $this->assertTrue($rc->execute_precheck());

        $rc->execute_plan();

        $rc->destroy();

        // Get the forums now on the old course.

        $modinfo = get_fast_modinfo($course->id);

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

        $this->assertCount(2, $forums);

        // The newer one will be the one with larger ID. (Safe to assume for unit test.)

        $biggest = null;

        foreach ($forums as $forum) {

            if ($biggest === null || $biggest->id < $forum->id) {

                $biggest = $forum;

            }

        }

        $restoredforumcontext = \context_module::instance($biggest->id);

        // Get the HTML blocks now on the old course.

        $blockdata = array_values($DB->get_records('block_instances',

                ['blockname' => 'html', 'parentcontextid' => $context->id], 'id DESC'));

        $restoredblockcontext = \context_block::instance($blockdata[0]->id);

        // Check that we have requested index update on both the module and the block.

        $requests = array_values($DB->get_records('search_index_requests', null, 'id'));

        $this->assertCount(3, $requests);

        $this->assertEquals($restoredblockcontext->id, $requests[1]->contextid);

        $this->assertEquals('', $requests[1]->searcharea);

        $this->assertEquals($restoredforumcontext->id, $requests[2]->contextid);

        $this->assertEquals('', $requests[2]->searcharea);

    }

    /**

     * Test restoring courses based on the backup plan. Primarily used with

     * the import functionality

     */

    public function test_restore_course_using_plan_defaults() {

        global $DB, $CFG, $USER;

        $this->resetAfterTest(true);

        $this->setAdminUser();

        $CFG->enableglobalsearch = true;

        // Set admin config setting so that activities are not restored by default.

        set_config('restore_general_activities', 0, 'restore');

        // Create a course.

        $generator = $this->getDataGenerator();

        $course = $generator->create_course();

        $course2 = $generator->create_course();

        $course3 = $generator->create_course();

        // Add a forum.

        $forum = $generator->create_module('forum', ['course' => $course->id]);

        // Backup course...

        $CFG->backup_file_logger_level = backup::LOG_NONE;

        $bc = new backup_controller(backup::TYPE_1COURSE, $course->id,

            backup::FORMAT_MOODLE, backup::INTERACTIVE_NO, backup::MODE_IMPORT,

            $USER->id);

        $backupid = $bc->get_backupid();

        $bc->execute_plan();

        $bc->destroy();

        // Restore it on top of course2 (should duplicate the forum).

        $rc = new restore_controller($backupid, $course2->id,

            backup::INTERACTIVE_NO, backup::MODE_IMPORT, $USER->id,

            backup::TARGET_EXISTING_ADDING, null, backup::RELEASESESSION_NO);

        $this->assertTrue($rc->execute_precheck());

        $rc->execute_plan();