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✏️ Editing: quiz_structure_modified_test.php

<?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 quiz_statistics;

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

global $CFG;
require_once($CFG->dirroot . '/mod/quiz/tests/quiz_question_helper_test_trait.php');

use core\progress\none;
use mod_quiz\grade_calculator;
use mod_quiz\quiz_settings;

/**
 * Unit tests for quiz_statistics\event\observer\slots_updated
 *
 * @package   quiz_statistics
 * @copyright 2023 onwards Catalyst IT EU {@link https://catalyst-eu.net}
 * @author    Mark Johnson <mark.johnson@catalyst-eu.net>
 * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 * @covers    \quiz_statistics\quiz_structure_modified
 */
class quiz_structure_modified_test extends \advanced_testcase {
    use \quiz_question_helper_test_trait;

/**
     * Clear the statistics cache for a quiz when it structure is modified.
     *
     * When recompute_quiz_sumgrades() is called, it should trigger this plugin's quiz_structure_modified callback
     * which clears the statistics cache for the quiz.
     *
     * @return void
     */
    public function test_clear_cache_on_structure_modified(): void {
        global $DB;
        $this->resetAfterTest(true);

// Create and attempt a quiz.
        $generator = $this->getDataGenerator();
        $user = $generator->create_user();
        $course = $generator->create_course();
        $quiz = $this->create_test_quiz($course);
        $questiongenerator = $generator->get_plugin_generator('core_question');
        $category = $questiongenerator->create_question_category();
        $question = $questiongenerator->create_question('match', null, ['category' => $category->id]);
        $questiongenerator->update_question($question);
        quiz_add_quiz_question($question->id, $quiz);
        [, , $attempt] = $this->attempt_quiz($quiz, $user);

// Run the statistics calculation to prime the cache.
        $report = new \quiz_statistics_report();
        $questions = $report->load_and_initialise_questions_for_calculations($quiz);
        $report->get_all_stats_and_analysis(
            $quiz,
            $quiz->grademethod,
            \question_attempt::ALL_TRIES,
            new \core\dml\sql_join(),
            $questions,
            new none(),
        );

$hashcode = quiz_statistics_qubaids_condition($quiz->id, new \core\dml\sql_join(), $quiz->grademethod)->get_hash_code();

$this->assertTrue($DB->record_exists('quiz_statistics', ['hashcode' => $hashcode]));
        $this->assertTrue($DB->record_exists('question_statistics', ['hashcode' => $hashcode]));
        $this->assertTrue($DB->record_exists('question_response_analysis', ['hashcode' => $hashcode]));

// Recompute sumgrades, which triggers the quiz_structure_modified callback.
        grade_calculator::create($attempt->get_quizobj())->recompute_quiz_sumgrades();

$this->assertFalse($DB->record_exists('quiz_statistics', ['hashcode' => $hashcode]));
        $this->assertFalse($DB->record_exists('question_statistics', ['hashcode' => $hashcode]));
        $this->assertFalse($DB->record_exists('question_response_analysis', ['hashcode' => $hashcode]));
    }
}

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