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 quizaccess_seb;

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

require_once(__DIR__ . '/test_helper_trait.php');

/**

 * PHPUnit tests for backup and restore functionality.

 *

 * @package   quizaccess_seb

 * @author    Dmitrii Metelkin <dmitriim@catalyst-au.net>

 * @copyright 2020 Catalyst IT

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

 */

class backup_restore_test extends \advanced_testcase {

    use \quizaccess_seb_test_helper_trait;

    /** @var template $template A test template. */

    protected $template;

    /**

     * Called before every test.

     */

    public function setUp(): void {

        global $USER;

        parent::setUp();

        $this->resetAfterTest();

        $this->setAdminUser();

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

        $this->template = $this->create_template();

        $this->user = $USER;

    }

    /**

     * A helper method to create a quiz with template usage of SEB.

     *

     * @return seb_quiz_settings

     */

    protected function create_quiz_with_template() {

        $this->quiz = $this->create_test_quiz($this->course, settings_provider::USE_SEB_CONFIG_MANUALLY);

        $quizsettings = seb_quiz_settings::get_record(['quizid' => $this->quiz->id]);

        $quizsettings->set('requiresafeexambrowser', settings_provider::USE_SEB_TEMPLATE);

        $quizsettings->set('templateid', $this->template->get('id'));

        $quizsettings->save();

        return $quizsettings;

    }

    /**

     * A helper method to emulate backup and restore of the quiz.

     *

     * @return \cm_info|null

     */

    protected function backup_and_restore_quiz() {

        return duplicate_module($this->course, get_fast_modinfo($this->course)->get_cm($this->quiz->cmid));

    }

    /**

     * A helper method to backup test quiz.

     *

     * @return mixed A backup ID ready to be restored.

     */

    protected function backup_quiz() {

        global $CFG;

        // Get the necessary files to perform backup and restore.

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

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

        $backupid = 'test-seb-backup-restore';

        $bc = new \backup_controller(\backup::TYPE_1ACTIVITY, $this->quiz->coursemodule, \backup::FORMAT_MOODLE,

            \backup::INTERACTIVE_NO, \backup::MODE_GENERAL, $this->user->id);

        $bc->execute_plan();

        $results = $bc->get_results();

        $file = $results['backup_destination'];

        $fp = get_file_packer('application/vnd.moodle.backup');

        $filepath = $CFG->dataroot . '/temp/backup/' . $backupid;

        $file->extract_to_pathname($fp, $filepath);

        $bc->destroy();

        return $backupid;

    }

    /**

     * A helper method to restore provided backup.

     *

     * @param string $backupid Backup ID to restore.

     */

    protected function restore_quiz($backupid) {

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

            \backup::INTERACTIVE_NO, \backup::MODE_GENERAL, $this->user->id, \backup::TARGET_CURRENT_ADDING);

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

        $rc->execute_plan();

        $rc->destroy();

    }

    /**

     * A helper method to emulate restoring to a different site.

     */

    protected function change_site() {

        set_config('siteidentifier', random_string(32) . 'not the same site');

    }

    /**

     * A helper method to validate backup and restore results.

     *

     * @param cm_info $newcm Restored course_module object.

     */

    protected function validate_backup_restore(\cm_info $newcm) {

        $this->assertEquals(2, seb_quiz_settings::count_records());

        $actual = seb_quiz_settings::get_record(['quizid' => $newcm->instance]);

        $expected = seb_quiz_settings::get_record(['quizid' => $this->quiz->id]);

        $this->assertEquals($expected->get('templateid'), $actual->get('templateid'));

        $this->assertEquals($expected->get('requiresafeexambrowser'), $actual->get('requiresafeexambrowser'));

        $this->assertEquals($expected->get('showsebdownloadlink'), $actual->get('showsebdownloadlink'));

        $this->assertEquals($expected->get('allowuserquitseb'), $actual->get('allowuserquitseb'));

        $this->assertEquals($expected->get('quitpassword'), $actual->get('quitpassword'));

        $this->assertEquals($expected->get('allowedbrowserexamkeys'), $actual->get('allowedbrowserexamkeys'));

        // Validate specific SEB config settings.

        foreach (settings_provider::get_seb_config_elements() as $name => $notused) {

            $name = preg_replace("/^seb_/", "", $name);

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

        }

    }

    /**

     * Test backup and restore when no seb.

     */

    public function test_backup_restore_no_seb(): void {

        $this->quiz = $this->create_test_quiz($this->course, settings_provider::USE_SEB_NO);

        $this->assertEquals(0, seb_quiz_settings::count_records());

        $this->backup_and_restore_quiz();

        $this->assertEquals(0, seb_quiz_settings::count_records());

    }

    /**

     * Test backup and restore when manually configured.

     */

    public function test_backup_restore_manual_config(): void {

        $this->quiz = $this->create_test_quiz($this->course, settings_provider::USE_SEB_CONFIG_MANUALLY);

        $expected = seb_quiz_settings::get_record(['quizid' => $this->quiz->id]);

        $expected->set('showsebdownloadlink', 0);

        $expected->set('quitpassword', '123');

        $expected->save();

        $this->assertEquals(1, seb_quiz_settings::count_records());

        $newcm = $this->backup_and_restore_quiz();

        $this->validate_backup_restore($newcm);

    }

    /**

     * Test backup and restore when using template.

     */

    public function test_backup_restore_template_config(): void {

        $this->quiz = $this->create_test_quiz($this->course, settings_provider::USE_SEB_CONFIG_MANUALLY);

        $expected = seb_quiz_settings::get_record(['quizid' => $this->quiz->id]);

        $template = $this->create_template();

        $expected->set('requiresafeexambrowser', settings_provider::USE_SEB_TEMPLATE);

        $expected->set('templateid', $template->get('id'));

        $expected->save();

        $this->assertEquals(1, seb_quiz_settings::count_records());

        $newcm = $this->backup_and_restore_quiz();

        $this->validate_backup_restore($newcm);

    }

    /**

     * Test backup and restore when using uploaded file.

     */

    public function test_backup_restore_uploaded_config(): void {

        $this->quiz = $this->create_test_quiz($this->course, settings_provider::USE_SEB_CONFIG_MANUALLY);

        $expected = seb_quiz_settings::get_record(['quizid' => $this->quiz->id]);

        $expected->set('requiresafeexambrowser', settings_provider::USE_SEB_UPLOAD_CONFIG);

        $xml = file_get_contents(__DIR__ . '/fixtures/unencrypted.seb');

        $this->create_module_test_file($xml, $this->quiz->cmid);

        $expected->save();

        $this->assertEquals(1, seb_quiz_settings::count_records());

        $newcm = $this->backup_and_restore_quiz();

        $this->validate_backup_restore($newcm);

        $expectedfile = settings_provider::get_module_context_sebconfig_file($this->quiz->cmid);

        $actualfile = settings_provider::get_module_context_sebconfig_file($newcm->id);

        $this->assertEquals($expectedfile->get_content(), $actualfile->get_content());

    }

    /**

     * No new template should be restored if restoring to a different site,

     * but the template with  the same name and content exists..

     */

    public function test_restore_template_to_a_different_site_when_the_same_template_exists(): void {

        $this->create_quiz_with_template();

        $backupid = $this->backup_quiz();

        $this->assertEquals(1, seb_quiz_settings::count_records());

        $this->assertEquals(1, template::count_records());

        $this->change_site();

        $this->restore_quiz($backupid);

        // Should see additional setting record, but no new template record.

        $this->assertEquals(2, seb_quiz_settings::count_records());

        $this->assertEquals(1, template::count_records());

    }

    /**

     * A new template should be restored if restoring to a different site, but existing template

     * has the same content, but different name.

     */

    public function test_restore_template_to_a_different_site_when_the_same_content_but_different_name(): void {

        $this->create_quiz_with_template();

        $backupid = $this->backup_quiz();

        $this->assertEquals(1, seb_quiz_settings::count_records());

        $this->assertEquals(1, template::count_records());

        $this->template->set('name', 'New name for template');

        $this->template->save();

        $this->change_site();

        $this->restore_quiz($backupid);

        // Should see additional setting record, and new template record.

        $this->assertEquals(2, seb_quiz_settings::count_records());

        $this->assertEquals(2, template::count_records());

    }

    /**

     * A new template should be restored if restoring to a different site, but existing template

     * has the same name, but different content.

     */

    public function test_restore_template_to_a_different_site_when_the_same_name_but_different_content(): void {

        global $CFG;

        $this->create_quiz_with_template();

        $backupid = $this->backup_quiz();

        $this->assertEquals(1, seb_quiz_settings::count_records());

        $this->assertEquals(1, template::count_records());

        $newxml = file_get_contents($CFG->dirroot . '/mod/quiz/accessrule/seb/tests/fixtures/simpleunencrypted.seb');

        $this->template->set('content', $newxml);

        $this->template->save();

        $this->change_site();

        $this->restore_quiz($backupid);

        // Should see additional setting record, and new template record.

        $this->assertEquals(2, seb_quiz_settings::count_records());

        $this->assertEquals(2, template::count_records());

    }

}