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<?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/report/statistics/report.php'); require_once($CFG->dirroot . '/mod/quiz/report/statistics/statisticslib.php'); require_once($CFG->dirroot . '/mod/quiz/report/reportlib.php'); require_once($CFG->dirroot . '/mod/quiz/tests/quiz_question_helper_test_trait.php'); /** * Tests for statistics report * * @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_report / class test_quiz_statistics_report extends \advanced_testcase { use \quiz_question_helper_test_trait; /* * Secondary database connection for creating locks. * * @var \moodle_database\|null / protected static ?\moodle_database $lockdb; /* * Lock factory using the secondary database connection. * * @var \moodle_database\|null / protected static ?\core\lock\lock_factory $lockfactory; /* * Create a lock factory with a second database session. * * This allows us to create a lock in our test code that will block a lock request * on the same key in code under test. * * @return void / public static function setUpBeforeClass(): void { global $CFG; self::$lockdb = \moodle_database::get_driver_instance($CFG->dbtype, $CFG->dblibrary); self::$lockdb->connect($CFG->dbhost, $CFG->dbuser, $CFG->dbpass, $CFG->dbname, $CFG->prefix, $CFG->dboptions); $lockfactory = \core\lock\lock_config::get_lock_factory('quiz_statistics_get_stats'); $reflectiondb = new \ReflectionProperty($lockfactory, 'db'); $reflectiondb->setAccessible(true); $reflectiondb->setValue($lockfactory, self::$lockdb); self::$lockfactory = $lockfactory; } /* * Dispose of the extra DB connection and lock factory. * * @return void / public static function tearDownAfterClass(): void { self::$lockdb->dispose(); self::$lockdb = null; self::$lockfactory = null; } /* * Return a generated quiz * * @return \stdClass / protected function create_and_attempt_quiz(): \stdClass { $course = $this->getDataGenerator()->create_course(); $user = $this->getDataGenerator()->create_user(); $quiz = $this->create_test_quiz($course); $quizcontext = \context_module::instance($quiz->cmid); $questiongenerator = $this->getDataGenerator()->get_plugin_generator('core_question'); $this->add_two_regular_questions($questiongenerator, $quiz, ['contextid' => $quizcontext->id]); $this->attempt_quiz($quiz, $user); return $quiz; } /* * Test locking the calculation process. * * When there is a lock on the hash code, test_get_all_stats_and_analysis() should wait until the lock timeout, then throw an * exception. * * When there is no lock (or the lock has been released), it should return a result. * * @return void / public function test_get_all_stats_and_analysis_locking(): void { $this->resetAfterTest(true); $quiz = $this->create_and_attempt_quiz(); $whichattempts = QUIZ_GRADEAVERAGE; // All attempts. $whichtries = \question_attempt::ALL_TRIES; $groupstudentsjoins = new \core\dml\sql_join(); $qubaids = quiz_statistics_qubaids_condition($quiz->id, $groupstudentsjoins, $whichattempts); $report = new \quiz_statistics_report(); $questions = $report->load_and_initialise_questions_for_calculations($quiz); $timeoutseconds = 20; set_config('getstatslocktimeout', $timeoutseconds, 'quiz_statistics'); $lock = self::$lockfactory->get_lock($qubaids->get_hash_code(), 0); $progress = new \core\progress\none(); $this->resetDebugging(); $timebefore = microtime(true); try { $result = $report->get_all_stats_and_analysis( $quiz, $whichattempts, $whichtries, $groupstudentsjoins, $questions, $progress ); $timeafter = microtime(true); // Verify that we waited as long as the timeout. $this->assertEqualsWithDelta($timeoutseconds, $timeafter - $timebefore, 1); $this->assertDebuggingCalled('Could not get lock on ' . $qubaids->get_hash_code() . ' (Quiz ID ' . $quiz->id . ') after ' . $timeoutseconds . ' seconds'); $this->assertEquals([null, null], $result); } finally { $lock->release(); } $this->resetDebugging(); $result = $report->get_all_stats_and_analysis( $quiz, $whichattempts, $whichtries, $groupstudentsjoins, $questions ); $this->assertDebuggingNotCalled(); $this->assertNotEquals([null, null], $result); } /* * Test locking when the current page does not require calculations. * * When there is a lock on the hash code, test_get_all_stats_and_analysis() should return a null result immediately, * with no exception thrown. * * @return void */ public function test_get_all_stats_and_analysis_locking_no_calculation(): void { $this->resetAfterTest(true); $quiz = $this->create_and_attempt_quiz(); $whichattempts = QUIZ_GRADEAVERAGE; // All attempts. $whichtries = \question_attempt::ALL_TRIES; $groupstudentsjoins = new \core\dml\sql_join(); $qubaids = quiz_statistics_qubaids_condition($quiz->id, $groupstudentsjoins, $whichattempts); $report = new \quiz_statistics_report(); $questions = $report->load_and_initialise_questions_for_calculations($quiz); $timeoutseconds = 20; set_config('getstatslocktimeout', $timeoutseconds, 'quiz_statistics'); $lock = self::$lockfactory->get_lock($qubaids->get_hash_code(), 0); $this->resetDebugging(); try { $progress = new \core\progress\none(); $timebefore = microtime(true); $result = $report->get_all_stats_and_analysis( $quiz, $whichattempts, $whichtries, $groupstudentsjoins, $questions, $progress, false ); $timeafter = microtime(true); // Verify that we did not wait for the timeout before returning. $this->assertLessThan($timeoutseconds, $timeafter - $timebefore); $this->assertEquals([null, null], $result); $this->assertDebuggingNotCalled(); } finally { $lock->release(); } } }

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