<?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/>.

/**
 * Quiz events tests.
 *
 * @package    mod_quiz
 * @category   phpunit
 * @copyright  2013 Adrian Greeve
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

namespace mod_quiz\event;


< use quiz;
< use quiz_attempt;
< 
< defined('MOODLE_INTERNAL') || die();
< 
< global $CFG;
< require_once($CFG->dirroot . '/mod/quiz/attemptlib.php');



> use mod_quiz\quiz_attempt;
> use mod_quiz\quiz_settings;
> use context_module;



/**
 * Unit tests for quiz events.
 *
 * @package    mod_quiz
 * @category   phpunit
 * @copyright  2013 Adrian Greeve
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */
class events_test extends \advanced_testcase {

    /**
     * Setup a quiz.
     *

<      * @return quiz the generated quiz.



>      * @return quiz_settings the generated quiz.


     */
    protected function prepare_quiz() {

        $this->resetAfterTest(true);

        // Create a course
        $course = $this->getDataGenerator()->create_course();

        // Make a quiz.
        $quizgenerator = $this->getDataGenerator()->get_plugin_generator('mod_quiz');


<         $quiz = $quizgenerator->create_instance(array('course' => $course->id, 'questionsperpage' => 0,
<                 'grade' => 100.0, 'sumgrades' => 2));



>         $quiz = $quizgenerator->create_instance(['course' => $course->id, 'questionsperpage' => 0,
>                 'grade' => 100.0, 'sumgrades' => 2]);



        $cm = get_coursemodule_from_instance('quiz', $quiz->id, $course->id);

        // Create a couple of questions.
        $questiongenerator = $this->getDataGenerator()->get_plugin_generator('core_question');

        $cat = $questiongenerator->create_question_category();

<         $saq = $questiongenerator->create_question('shortanswer', null, array('category' => $cat->id));
<         $numq = $questiongenerator->create_question('numerical', null, array('category' => $cat->id));



>         $saq = $questiongenerator->create_question('shortanswer', null, ['category' => $cat->id]);
>         $numq = $questiongenerator->create_question('numerical', null, ['category' => $cat->id]);



        // Add them to the quiz.
        quiz_add_quiz_question($saq->id, $quiz);
        quiz_add_quiz_question($numq->id, $quiz);

        // Make a user to do the quiz.
        $user1 = $this->getDataGenerator()->create_user();
        $this->setUser($user1);


<         return quiz::create($quiz->id, $user1->id);



>         return quiz_settings::create($quiz->id, $user1->id);


    }

    /**
     * Setup a quiz attempt at the quiz created by {@link prepare_quiz()}.
     *

<      * @param quiz $quizobj the generated quiz.



>      * @param \mod_quiz\quiz_settings $quizobj the generated quiz.


     * @param bool $ispreview Make the attempt a preview attempt when true.
     * @return array with three elements, array($quizobj, $quba, $attempt)
     */
    protected function prepare_quiz_attempt($quizobj, $ispreview = false) {
        // Start the attempt.
        $quba = \question_engine::make_questions_usage_by_activity('mod_quiz', $quizobj->get_context());
        $quba->set_preferred_behaviour($quizobj->get_quiz()->preferredbehaviour);

        $timenow = time();
        $attempt = quiz_create_attempt($quizobj, 1, false, $timenow, $ispreview);
        quiz_start_new_attempt($quizobj, $quba, $attempt, 1, $timenow);
        quiz_attempt_save_started($quizobj, $quba, $attempt);


<         return array($quizobj, $quba, $attempt);



>         return [$quizobj, $quba, $attempt];


    }

    /**
     * Setup some convenience test data with a single attempt.
     *
     * @param bool $ispreview Make the attempt a preview attempt when true.
     * @return array with three elements, array($quizobj, $quba, $attempt)
     */
    protected function prepare_quiz_data($ispreview = false) {
        $quizobj = $this->prepare_quiz();
        return $this->prepare_quiz_attempt($quizobj, $ispreview);
    }

    public function test_attempt_submitted() {

        list($quizobj, $quba, $attempt) = $this->prepare_quiz_data();
        $attemptobj = quiz_attempt::create($attempt->id);

        // Catch the event.
        $sink = $this->redirectEvents();

        $timefinish = time();
        $attemptobj->process_finish($timefinish, false);
        $events = $sink->get_events();
        $sink->close();

        // Validate the event.
        $this->assertCount(3, $events);
        $event = $events[2];
        $this->assertInstanceOf('\mod_quiz\event\attempt_submitted', $event);
        $this->assertEquals('quiz_attempts', $event->objecttable);
        $this->assertEquals($quizobj->get_context(), $event->get_context());
        $this->assertEquals($attempt->userid, $event->relateduserid);
        $this->assertEquals(null, $event->other['submitterid']); // Should be the user, but PHP Unit complains...

<         $this->assertEquals('quiz_attempt_submitted', $event->get_legacy_eventname());
<         $legacydata = new \stdClass();
<         $legacydata->component = 'mod_quiz';
<         $legacydata->attemptid = (string) $attempt->id;
<         $legacydata->timestamp = $timefinish;
<         $legacydata->userid = $attempt->userid;
<         $legacydata->cmid = $quizobj->get_cmid();
<         $legacydata->courseid = $quizobj->get_courseid();
<         $legacydata->quizid = $quizobj->get_quizid();
<         // Submitterid should be the user, but as we are in PHP Unit, CLI_SCRIPT is set to true which sets null in submitterid.
<         $legacydata->submitterid = null;
<         $legacydata->timefinish = $timefinish;
<         $this->assertEventLegacyData($legacydata, $event);


        $this->assertEventContextNotUsed($event);
    }

    public function test_attempt_becameoverdue() {

        list($quizobj, $quba, $attempt) = $this->prepare_quiz_data();
        $attemptobj = quiz_attempt::create($attempt->id);

        // Catch the event.
        $sink = $this->redirectEvents();
        $timefinish = time();
        $attemptobj->process_going_overdue($timefinish, false);
        $events = $sink->get_events();
        $sink->close();

        $this->assertCount(1, $events);
        $event = $events[0];
        $this->assertInstanceOf('\mod_quiz\event\attempt_becameoverdue', $event);
        $this->assertEquals('quiz_attempts', $event->objecttable);
        $this->assertEquals($quizobj->get_context(), $event->get_context());
        $this->assertEquals($attempt->userid, $event->relateduserid);
        $this->assertNotEmpty($event->get_description());
        // Submitterid should be the user, but as we are in PHP Unit, CLI_SCRIPT is set to true which sets null in submitterid.
        $this->assertEquals(null, $event->other['submitterid']);

<         $this->assertEquals('quiz_attempt_overdue', $event->get_legacy_eventname());
<         $legacydata = new \stdClass();
<         $legacydata->component = 'mod_quiz';
<         $legacydata->attemptid = (string) $attempt->id;
<         $legacydata->timestamp = $timefinish;
<         $legacydata->userid = $attempt->userid;
<         $legacydata->cmid = $quizobj->get_cmid();
<         $legacydata->courseid = $quizobj->get_courseid();
<         $legacydata->quizid = $quizobj->get_quizid();
<         $legacydata->submitterid = null; // Should be the user, but PHP Unit complains...
<         $this->assertEventLegacyData($legacydata, $event);


        $this->assertEventContextNotUsed($event);
    }

    public function test_attempt_abandoned() {

        list($quizobj, $quba, $attempt) = $this->prepare_quiz_data();
        $attemptobj = quiz_attempt::create($attempt->id);

        // Catch the event.
        $sink = $this->redirectEvents();
        $timefinish = time();
        $attemptobj->process_abandon($timefinish, false);
        $events = $sink->get_events();
        $sink->close();

        $this->assertCount(1, $events);
        $event = $events[0];
        $this->assertInstanceOf('\mod_quiz\event\attempt_abandoned', $event);
        $this->assertEquals('quiz_attempts', $event->objecttable);
        $this->assertEquals($quizobj->get_context(), $event->get_context());
        $this->assertEquals($attempt->userid, $event->relateduserid);
        // Submitterid should be the user, but as we are in PHP Unit, CLI_SCRIPT is set to true which sets null in submitterid.
        $this->assertEquals(null, $event->other['submitterid']);

<         $this->assertEquals('quiz_attempt_abandoned', $event->get_legacy_eventname());
<         $legacydata = new \stdClass();
<         $legacydata->component = 'mod_quiz';
<         $legacydata->attemptid = (string) $attempt->id;
<         $legacydata->timestamp = $timefinish;
<         $legacydata->userid = $attempt->userid;
<         $legacydata->cmid = $quizobj->get_cmid();
<         $legacydata->courseid = $quizobj->get_courseid();
<         $legacydata->quizid = $quizobj->get_quizid();
<         $legacydata->submitterid = null; // Should be the user, but PHP Unit complains...
<         $this->assertEventLegacyData($legacydata, $event);


        $this->assertEventContextNotUsed($event);
    }

    public function test_attempt_started() {
        $quizobj = $this->prepare_quiz();

        $quba = \question_engine::make_questions_usage_by_activity('mod_quiz', $quizobj->get_context());
        $quba->set_preferred_behaviour($quizobj->get_quiz()->preferredbehaviour);

        $timenow = time();
        $attempt = quiz_create_attempt($quizobj, 1, false, $timenow);
        quiz_start_new_attempt($quizobj, $quba, $attempt, 1, $timenow);

        // Trigger and capture the event.
        $sink = $this->redirectEvents();
        quiz_attempt_save_started($quizobj, $quba, $attempt);
        $events = $sink->get_events();
        $event = reset($events);

        // Check that the event data is valid.
        $this->assertInstanceOf('\mod_quiz\event\attempt_started', $event);
        $this->assertEquals('quiz_attempts', $event->objecttable);
        $this->assertEquals($attempt->id, $event->objectid);
        $this->assertEquals($attempt->userid, $event->relateduserid);
        $this->assertEquals($quizobj->get_context(), $event->get_context());

<         $this->assertEquals('quiz_attempt_started', $event->get_legacy_eventname());


        $this->assertEquals(\context_module::instance($quizobj->get_cmid()), $event->get_context());

<         // Check legacy log data.
<         $expected = array($quizobj->get_courseid(), 'quiz', 'attempt', 'review.php?attempt=' . $attempt->id,
<             $quizobj->get_quizid(), $quizobj->get_cmid());
<         $this->assertEventLegacyLogData($expected, $event);
<         // Check legacy event data.
<         $legacydata = new \stdClass();
<         $legacydata->component = 'mod_quiz';
<         $legacydata->attemptid = $attempt->id;
<         $legacydata->timestart = $attempt->timestart;
<         $legacydata->timestamp = $attempt->timestart;
<         $legacydata->userid = $attempt->userid;
<         $legacydata->quizid = $quizobj->get_quizid();
<         $legacydata->cmid = $quizobj->get_cmid();
<         $legacydata->courseid = $quizobj->get_courseid();
<         $this->assertEventLegacyData($legacydata, $event);



>     }
> 
>     /**
>      * Test the attempt question restarted event.
>      *
>      * There is no external API for replacing a question, so the unit test will simply
>      * create and trigger the event and ensure the event data is returned as expected.
>      */
>     public function test_attempt_question_restarted() {
>         list($quizobj, $quba, $attempt) = $this->prepare_quiz_data();
> 
>         $params = [
>             'objectid' => 1,
>             'relateduserid' => 2,
>             'courseid' => $quizobj->get_courseid(),
>             'context' => \context_module::instance($quizobj->get_cmid()),
>             'other' => [
>                 'quizid' => $quizobj->get_quizid(),
>                 'page' => 2,
>                 'slot' => 3,
>                 'newquestionid' => 2
>             ]
>         ];
>         $event = \mod_quiz\event\attempt_question_restarted::create($params);
> 
>         // Trigger and capture the event.
>         $sink = $this->redirectEvents();
>         $event->trigger();
>         $events = $sink->get_events();
>         $event = reset($events);
> 
>         // Check that the event data is valid.
>         $this->assertInstanceOf('\mod_quiz\event\attempt_question_restarted', $event);
>         $this->assertEquals(\context_module::instance($quizobj->get_cmid()), $event->get_context());
>         $this->assertEventContextNotUsed($event);
>     }
> 
>     /**
>      * Test the attempt updated event.
>      *
>      * There is no external API for updating an attempt, so the unit test will simply
>      * create and trigger the event and ensure the event data is returned as expected.
>      */
>     public function test_attempt_updated() {
>         list($quizobj, $quba, $attempt) = $this->prepare_quiz_data();
> 
>         $params = [
>             'objectid' => 1,
>             'relateduserid' => 2,
>             'courseid' => $quizobj->get_courseid(),
>             'context' => \context_module::instance($quizobj->get_cmid()),
>             'other' => [
>                 'quizid' => $quizobj->get_quizid(),
>                 'page' => 0
>             ]
>         ];
>         $event = \mod_quiz\event\attempt_updated::create($params);
> 
>         // Trigger and capture the event.
>         $sink = $this->redirectEvents();
>         $event->trigger();
>         $events = $sink->get_events();
>         $event = reset($events);
> 
>         // Check that the event data is valid.
>         $this->assertInstanceOf('\mod_quiz\event\attempt_updated', $event);
>         $this->assertEquals(\context_module::instance($quizobj->get_cmid()), $event->get_context());
>         $this->assertEventContextNotUsed($event);
>     }
> 
>     /**
>      * Test the attempt auto-saved event.
>      *
>      * There is no external API for auto-saving an attempt, so the unit test will simply
>      * create and trigger the event and ensure the event data is returned as expected.
>      */
>     public function test_attempt_autosaved() {
>         list($quizobj, $quba, $attempt) = $this->prepare_quiz_data();
> 
>         $params = [
>             'objectid' => 1,
>             'relateduserid' => 2,
>             'courseid' => $quizobj->get_courseid(),
>             'context' => \context_module::instance($quizobj->get_cmid()),
>             'other' => [
>                 'quizid' => $quizobj->get_quizid(),
>                 'page' => 0
>             ]
>         ];
> 
>         $event = \mod_quiz\event\attempt_autosaved::create($params);
> 
>         // Trigger and capture the event.
>         $sink = $this->redirectEvents();
>         $event->trigger();
>         $events = $sink->get_events();
>         $event = reset($events);
> 
>         // Check that the event data is valid.
>         $this->assertInstanceOf('\mod_quiz\event\attempt_autosaved', $event);
>         $this->assertEquals(\context_module::instance($quizobj->get_cmid()), $event->get_context());


        $this->assertEventContextNotUsed($event);
    }

    /**
     * Test the edit page viewed event.
     *
     * There is no external API for updating a quiz, so the unit test will simply
     * create and trigger the event and ensure the event data is returned as expected.
     */
    public function test_edit_page_viewed() {
        $this->resetAfterTest();

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

<         $quiz = $this->getDataGenerator()->create_module('quiz', array('course' => $course->id));



>         $quiz = $this->getDataGenerator()->create_module('quiz', ['course' => $course->id]);




<         $params = array(



>         $params = [


            'courseid' => $course->id,
            'context' => \context_module::instance($quiz->cmid),

<             'other' => array(



>             'other' => [


                'quizid' => $quiz->id

<             )
<         );



>             ]
>         ];


        $event = \mod_quiz\event\edit_page_viewed::create($params);

        // Trigger and capture the event.
        $sink = $this->redirectEvents();
        $event->trigger();
        $events = $sink->get_events();
        $event = reset($events);

        // Check that the event data is valid.
        $this->assertInstanceOf('\mod_quiz\event\edit_page_viewed', $event);
        $this->assertEquals(\context_module::instance($quiz->cmid), $event->get_context());

<         $expected = array($course->id, 'quiz', 'editquestions', 'view.php?id=' . $quiz->cmid, $quiz->id, $quiz->cmid);
<         $this->assertEventLegacyLogData($expected, $event);


        $this->assertEventContextNotUsed($event);
    }

    /**
     * Test the attempt deleted event.
     */
    public function test_attempt_deleted() {
        list($quizobj, $quba, $attempt) = $this->prepare_quiz_data();

        // Trigger and capture the event.
        $sink = $this->redirectEvents();
        quiz_delete_attempt($attempt, $quizobj->get_quiz());
        $events = $sink->get_events();
        $event = reset($events);

        // Check that the event data is valid.
        $this->assertInstanceOf('\mod_quiz\event\attempt_deleted', $event);
        $this->assertEquals(\context_module::instance($quizobj->get_cmid()), $event->get_context());

<         $expected = array($quizobj->get_courseid(), 'quiz', 'delete attempt', 'report.php?id=' . $quizobj->get_cmid(),
<             $attempt->id, $quizobj->get_cmid());
<         $this->assertEventLegacyLogData($expected, $event);


        $this->assertEventContextNotUsed($event);
    }

    /**
     * Test that preview attempt deletions are not logged.
     */
    public function test_preview_attempt_deleted() {
        // Create quiz with preview attempt.
        list($quizobj, $quba, $previewattempt) = $this->prepare_quiz_data(true);

        // Delete a preview attempt, capturing events.
        $sink = $this->redirectEvents();
        quiz_delete_attempt($previewattempt, $quizobj->get_quiz());

        // Verify that no events were generated.
        $this->assertEmpty($sink->get_events());
    }

    /**
     * Test the report viewed event.
     *
     * There is no external API for viewing reports, so the unit test will simply
     * create and trigger the event and ensure the event data is returned as expected.
     */
    public function test_report_viewed() {
        $this->resetAfterTest();

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

<         $quiz = $this->getDataGenerator()->create_module('quiz', array('course' => $course->id));



>         $quiz = $this->getDataGenerator()->create_module('quiz', ['course' => $course->id]);




<         $params = array(



>         $params = [


            'context' => $context = \context_module::instance($quiz->cmid),

<             'other' => array(



>             'other' => [


                'quizid' => $quiz->id,
                'reportname' => 'overview'

<             )
<         );



>             ]
>         ];


        $event = \mod_quiz\event\report_viewed::create($params);

        // Trigger and capture the event.
        $sink = $this->redirectEvents();
        $event->trigger();
        $events = $sink->get_events();
        $event = reset($events);

        // Check that the event data is valid.
        $this->assertInstanceOf('\mod_quiz\event\report_viewed', $event);
        $this->assertEquals(\context_module::instance($quiz->cmid), $event->get_context());

<         $expected = array($course->id, 'quiz', 'report', 'report.php?id=' . $quiz->cmid . '&mode=overview',
<             $quiz->id, $quiz->cmid);
<         $this->assertEventLegacyLogData($expected, $event);


        $this->assertEventContextNotUsed($event);
    }

    /**
     * Test the attempt reviewed event.
     *
     * There is no external API for reviewing attempts, so the unit test will simply
     * create and trigger the event and ensure the event data is returned as expected.
     */
    public function test_attempt_reviewed() {
        $this->resetAfterTest();

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

<         $quiz = $this->getDataGenerator()->create_module('quiz', array('course' => $course->id));



>         $quiz = $this->getDataGenerator()->create_module('quiz', ['course' => $course->id]);




<         $params = array(



>         $params = [


            'objectid' => 1,
            'relateduserid' => 2,
            'courseid' => $course->id,
            'context' => \context_module::instance($quiz->cmid),

<             'other' => array(



>             'other' => [


                'quizid' => $quiz->id

<             )
<         );



>             ]
>         ];


        $event = \mod_quiz\event\attempt_reviewed::create($params);

        // Trigger and capture the event.
        $sink = $this->redirectEvents();
        $event->trigger();
        $events = $sink->get_events();
        $event = reset($events);

        // Check that the event data is valid.
        $this->assertInstanceOf('\mod_quiz\event\attempt_reviewed', $event);
        $this->assertEquals(\context_module::instance($quiz->cmid), $event->get_context());

<         $expected = array($course->id, 'quiz', 'review', 'review.php?attempt=1', $quiz->id, $quiz->cmid);
<         $this->assertEventLegacyLogData($expected, $event);


        $this->assertEventContextNotUsed($event);
    }

    /**
     * Test the attempt summary viewed event.
     *
     * There is no external API for viewing the attempt summary, so the unit test will simply
     * create and trigger the event and ensure the event data is returned as expected.
     */
    public function test_attempt_summary_viewed() {
        $this->resetAfterTest();

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

<         $quiz = $this->getDataGenerator()->create_module('quiz', array('course' => $course->id));



>         $quiz = $this->getDataGenerator()->create_module('quiz', ['course' => $course->id]);




<         $params = array(



>         $params = [


            'objectid' => 1,
            'relateduserid' => 2,
            'courseid' => $course->id,
            'context' => \context_module::instance($quiz->cmid),

<             'other' => array(



>             'other' => [


                'quizid' => $quiz->id

<             )
<         );



>             ]
>         ];


        $event = \mod_quiz\event\attempt_summary_viewed::create($params);

        // Trigger and capture the event.
        $sink = $this->redirectEvents();
        $event->trigger();
        $events = $sink->get_events();
        $event = reset($events);

        // Check that the event data is valid.
        $this->assertInstanceOf('\mod_quiz\event\attempt_summary_viewed', $event);
        $this->assertEquals(\context_module::instance($quiz->cmid), $event->get_context());

<         $expected = array($course->id, 'quiz', 'view summary', 'summary.php?attempt=1', $quiz->id, $quiz->cmid);
<         $this->assertEventLegacyLogData($expected, $event);


        $this->assertEventContextNotUsed($event);
    }

    /**
     * Test the user override created event.
     *
     * There is no external API for creating a user override, so the unit test will simply
     * create and trigger the event and ensure the event data is returned as expected.
     */
    public function test_user_override_created() {
        $this->resetAfterTest();

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

<         $quiz = $this->getDataGenerator()->create_module('quiz', array('course' => $course->id));



>         $quiz = $this->getDataGenerator()->create_module('quiz', ['course' => $course->id]);




<         $params = array(



>         $params = [


            'objectid' => 1,
            'relateduserid' => 2,
            'context' => \context_module::instance($quiz->cmid),

<             'other' => array(



>             'other' => [


                'quizid' => $quiz->id

<             )
<         );



>             ]
>         ];


        $event = \mod_quiz\event\user_override_created::create($params);

        // Trigger and capture the event.
        $sink = $this->redirectEvents();
        $event->trigger();
        $events = $sink->get_events();
        $event = reset($events);

        // Check that the event data is valid.
        $this->assertInstanceOf('\mod_quiz\event\user_override_created', $event);
        $this->assertEquals(\context_module::instance($quiz->cmid), $event->get_context());
        $this->assertEventContextNotUsed($event);
    }

    /**
     * Test the group override created event.
     *
     * There is no external API for creating a group override, so the unit test will simply
     * create and trigger the event and ensure the event data is returned as expected.
     */
    public function test_group_override_created() {
        $this->resetAfterTest();

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

<         $quiz = $this->getDataGenerator()->create_module('quiz', array('course' => $course->id));



>         $quiz = $this->getDataGenerator()->create_module('quiz', ['course' => $course->id]);




<         $params = array(



>         $params = [


            'objectid' => 1,
            'context' => \context_module::instance($quiz->cmid),

<             'other' => array(



>             'other' => [


                'quizid' => $quiz->id,
                'groupid' => 2

<             )
<         );



>             ]
>         ];


        $event = \mod_quiz\event\group_override_created::create($params);

        // Trigger and capture the event.
        $sink = $this->redirectEvents();
        $event->trigger();
        $events = $sink->get_events();
        $event = reset($events);

        // Check that the event data is valid.
        $this->assertInstanceOf('\mod_quiz\event\group_override_created', $event);
        $this->assertEquals(\context_module::instance($quiz->cmid), $event->get_context());
        $this->assertEventContextNotUsed($event);
    }

    /**
     * Test the user override updated event.
     *
     * There is no external API for updating a user override, so the unit test will simply
     * create and trigger the event and ensure the event data is returned as expected.
     */
    public function test_user_override_updated() {
        $this->resetAfterTest();

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

<         $quiz = $this->getDataGenerator()->create_module('quiz', array('course' => $course->id));



>         $quiz = $this->getDataGenerator()->create_module('quiz', ['course' => $course->id]);




<         $params = array(



>         $params = [


            'objectid' => 1,
            'relateduserid' => 2,
            'context' => \context_module::instance($quiz->cmid),

<             'other' => array(



>             'other' => [


                'quizid' => $quiz->id

<             )
<         );



>             ]
>         ];


        $event = \mod_quiz\event\user_override_updated::create($params);

        // Trigger and capture the event.
        $sink = $this->redirectEvents();
        $event->trigger();
        $events = $sink->get_events();
        $event = reset($events);

        // Check that the event data is valid.
        $this->assertInstanceOf('\mod_quiz\event\user_override_updated', $event);
        $this->assertEquals(\context_module::instance($quiz->cmid), $event->get_context());

<         $expected = array($course->id, 'quiz', 'edit override', 'overrideedit.php?id=1', $quiz->id, $quiz->cmid);
<         $this->assertEventLegacyLogData($expected, $event);


        $this->assertEventContextNotUsed($event);
    }

    /**
     * Test the group override updated event.
     *
     * There is no external API for updating a group override, so the unit test will simply
     * create and trigger the event and ensure the event data is returned as expected.
     */
    public function test_group_override_updated() {
        $this->resetAfterTest();

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

<         $quiz = $this->getDataGenerator()->create_module('quiz', array('course' => $course->id));



>         $quiz = $this->getDataGenerator()->create_module('quiz', ['course' => $course->id]);




<         $params = array(



>         $params = [


            'objectid' => 1,
            'context' => \context_module::instance($quiz->cmid),

<             'other' => array(



>             'other' => [


                'quizid' => $quiz->id,
                'groupid' => 2

<             )
<         );



>             ]
>         ];


        $event = \mod_quiz\event\group_override_updated::create($params);

        // Trigger and capture the event.
        $sink = $this->redirectEvents();
        $event->trigger();
        $events = $sink->get_events();
        $event = reset($events);

        // Check that the event data is valid.
        $this->assertInstanceOf('\mod_quiz\event\group_override_updated', $event);
        $this->assertEquals(\context_module::instance($quiz->cmid), $event->get_context());

<         $expected = array($course->id, 'quiz', 'edit override', 'overrideedit.php?id=1', $quiz->id, $quiz->cmid);
<         $this->assertEventLegacyLogData($expected, $event);


        $this->assertEventContextNotUsed($event);
    }

    /**
     * Test the user override deleted event.
     */
    public function test_user_override_deleted() {
        global $DB;

        $this->resetAfterTest();

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

<         $quiz = $this->getDataGenerator()->create_module('quiz', array('course' => $course->id));



>         $quiz = $this->getDataGenerator()->create_module('quiz', ['course' => $course->id]);



        // Create an override.
        $override = new \stdClass();
        $override->quiz = $quiz->id;
        $override->userid = 2;
        $override->id = $DB->insert_record('quiz_overrides', $override);

        // Trigger and capture the event.
        $sink = $this->redirectEvents();
        quiz_delete_override($quiz, $override->id);
        $events = $sink->get_events();
        $event = reset($events);

        // Check that the event data is valid.
        $this->assertInstanceOf('\mod_quiz\event\user_override_deleted', $event);
        $this->assertEquals(\context_module::instance($quiz->cmid), $event->get_context());

<         $expected = array($course->id, 'quiz', 'delete override', 'overrides.php?cmid=' . $quiz->cmid, $quiz->id, $quiz->cmid);
<         $this->assertEventLegacyLogData($expected, $event);


        $this->assertEventContextNotUsed($event);
    }

    /**
     * Test the group override deleted event.
     */
    public function test_group_override_deleted() {
        global $DB;

        $this->resetAfterTest();

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

<         $quiz = $this->getDataGenerator()->create_module('quiz', array('course' => $course->id));



>         $quiz = $this->getDataGenerator()->create_module('quiz', ['course' => $course->id]);



        // Create an override.
        $override = new \stdClass();
        $override->quiz = $quiz->id;
        $override->groupid = 2;
        $override->id = $DB->insert_record('quiz_overrides', $override);

        // Trigger and capture the event.
        $sink = $this->redirectEvents();
        quiz_delete_override($quiz, $override->id);
        $events = $sink->get_events();
        $event = reset($events);

        // Check that the event data is valid.
        $this->assertInstanceOf('\mod_quiz\event\group_override_deleted', $event);
        $this->assertEquals(\context_module::instance($quiz->cmid), $event->get_context());

<         $expected = array($course->id, 'quiz', 'delete override', 'overrides.php?cmid=' . $quiz->cmid, $quiz->id, $quiz->cmid);
<         $this->assertEventLegacyLogData($expected, $event);


        $this->assertEventContextNotUsed($event);
    }

    /**
     * Test the attempt viewed event.
     *
     * There is no external API for continuing an attempt, so the unit test will simply
     * create and trigger the event and ensure the event data is returned as expected.
     */
    public function test_attempt_viewed() {
        $this->resetAfterTest();

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

<         $quiz = $this->getDataGenerator()->create_module('quiz', array('course' => $course->id));



>         $quiz = $this->getDataGenerator()->create_module('quiz', ['course' => $course->id]);




<         $params = array(



>         $params = [


            'objectid' => 1,
            'relateduserid' => 2,
            'courseid' => $course->id,
            'context' => \context_module::instance($quiz->cmid),

<             'other' => array(
<                 'quizid' => $quiz->id
<             )
<         );



>             'other' => [
>                 'quizid' => $quiz->id,
>                 'page' => 0
>             ]
>         ];


        $event = \mod_quiz\event\attempt_viewed::create($params);

        // Trigger and capture the event.
        $sink = $this->redirectEvents();
        $event->trigger();
        $events = $sink->get_events();
        $event = reset($events);

        // Check that the event data is valid.
        $this->assertInstanceOf('\mod_quiz\event\attempt_viewed', $event);
        $this->assertEquals(\context_module::instance($quiz->cmid), $event->get_context());

<         $expected = array($course->id, 'quiz', 'continue attempt', 'review.php?attempt=1', $quiz->id, $quiz->cmid);
<         $this->assertEventLegacyLogData($expected, $event);


        $this->assertEventContextNotUsed($event);
    }

    /**
     * Test the attempt previewed event.
     */
    public function test_attempt_preview_started() {
        $quizobj = $this->prepare_quiz();

        $quba = \question_engine::make_questions_usage_by_activity('mod_quiz', $quizobj->get_context());
        $quba->set_preferred_behaviour($quizobj->get_quiz()->preferredbehaviour);

        $timenow = time();
        $attempt = quiz_create_attempt($quizobj, 1, false, $timenow, true);
        quiz_start_new_attempt($quizobj, $quba, $attempt, 1, $timenow);

        // Trigger and capture the event.
        $sink = $this->redirectEvents();
        quiz_attempt_save_started($quizobj, $quba, $attempt);
        $events = $sink->get_events();
        $event = reset($events);

        // Check that the event data is valid.
        $this->assertInstanceOf('\mod_quiz\event\attempt_preview_started', $event);
        $this->assertEquals(\context_module::instance($quizobj->get_cmid()), $event->get_context());

<         $expected = array($quizobj->get_courseid(), 'quiz', 'preview', 'view.php?id=' . $quizobj->get_cmid(),
<             $quizobj->get_quizid(), $quizobj->get_cmid());
<         $this->assertEventLegacyLogData($expected, $event);


        $this->assertEventContextNotUsed($event);
    }

    /**
     * Test the question manually graded event.
     *
     * There is no external API for manually grading a question, so the unit test will simply
     * create and trigger the event and ensure the event data is returned as expected.
     */
    public function test_question_manually_graded() {
        list($quizobj, $quba, $attempt) = $this->prepare_quiz_data();


<         $params = array(



>         $params = [


            'objectid' => 1,
            'courseid' => $quizobj->get_courseid(),
            'context' => \context_module::instance($quizobj->get_cmid()),

<             'other' => array(



>             'other' => [


                'quizid' => $quizobj->get_quizid(),
                'attemptid' => 2,
                'slot' => 3

<             )
<         );



>             ]
>         ];


        $event = \mod_quiz\event\question_manually_graded::create($params);

        // Trigger and capture the event.
        $sink = $this->redirectEvents();
        $event->trigger();
        $events = $sink->get_events();
        $event = reset($events);

        // Check that the event data is valid.
        $this->assertInstanceOf('\mod_quiz\event\question_manually_graded', $event);
        $this->assertEquals(\context_module::instance($quizobj->get_cmid()), $event->get_context());

<         $expected = array($quizobj->get_courseid(), 'quiz', 'manualgrade', 'comment.php?attempt=2&slot=3',
<             $quizobj->get_quizid(), $quizobj->get_cmid());
<         $this->assertEventLegacyLogData($expected, $event);


        $this->assertEventContextNotUsed($event);
    }

    /**
     * Test the attempt regraded event.
     *
     * There is no external API for regrading attempts, so the unit test will simply
     * create and trigger the event and ensure the event data is returned as expected.
     */
    public function test_attempt_regraded() {
      $this->resetAfterTest();

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

<       $quiz = $this->getDataGenerator()->create_module('quiz', array('course' => $course->id));



>         $quiz = $this->getDataGenerator()->create_module('quiz', ['course' => $course->id]);




<       $params = array(



>         $params = [


        'objectid' => 1,
        'relateduserid' => 2,
        'courseid' => $course->id,
        'context' => \context_module::instance($quiz->cmid),

<         'other' => array(



>             'other' => [


          'quizid' => $quiz->id

<         )
<       );



>             ]
>         ];


      $event = \mod_quiz\event\attempt_regraded::create($params);

      // Trigger and capture the event.
      $sink = $this->redirectEvents();
      $event->trigger();
      $events = $sink->get_events();
      $event = reset($events);

      // Check that the event data is valid.
      $this->assertInstanceOf('\mod_quiz\event\attempt_regraded', $event);
      $this->assertEquals(\context_module::instance($quiz->cmid), $event->get_context());
      $this->assertEventContextNotUsed($event);

>     }
    }
> 
}
>     /**
>      * Test the attempt notify manual graded event.
>      * There is no external API for notification email when manual grading of user's attempt is completed,
>      * so the unit test will simply create and trigger the event and ensure the event data is returned as expected.
>      */
>     public function test_attempt_manual_grading_completed() {
>         $this->resetAfterTest();
>         list($quizobj, $quba, $attempt) = $this->prepare_quiz_data();
>         $attemptobj = quiz_attempt::create($attempt->id);
> 
>         $params = [
>             'objectid' => $attemptobj->get_attemptid(),
>             'relateduserid' => $attemptobj->get_userid(),
>             'courseid' => $attemptobj->get_course()->id,
>             'context' => \context_module::instance($attemptobj->get_cmid()),
>             'other' => [
>                 'quizid' => $attemptobj->get_quizid()
>             ]
>         ];
>         $event = \mod_quiz\event\attempt_manual_grading_completed::create($params);
> 
>         // Catch the event.
>         $sink = $this->redirectEvents();
>         $event->trigger();
>         $events = $sink->get_events();
>         $sink->close();
> 
>         // Validate the event.
>         $this->assertCount(1, $events);
>         $event = reset($events);
>         $this->assertInstanceOf('\mod_quiz\event\attempt_manual_grading_completed', $event);
>         $this->assertEquals('quiz_attempts', $event->objecttable);
>         $this->assertEquals($quizobj->get_context(), $event->get_context());
>         $this->assertEquals($attempt->userid, $event->relateduserid);
>         $this->assertNotEmpty($event->get_description());
>         $this->assertEventContextNotUsed($event);
>     }
> 
>     /**
>      * Test the page break created event.
>      *
>      * There is no external API for creating page break, so the unit test will simply
>      * create and trigger the event and ensure the event data is returned as expected.
>      */
>     public function test_page_break_created() {
>         $quizobj = $this->prepare_quiz();
> 
>         $params = [
>             'objectid' => 1,
>             'context' => context_module::instance($quizobj->get_cmid()),
>             'other' => [
>                 'quizid' => $quizobj->get_quizid(),
>                 'slotnumber' => 3,
>             ]
>         ];
>         $event = \mod_quiz\event\page_break_created::create($params);
> 
>         // Trigger and capture the event.
>         $sink = $this->redirectEvents();
>         $event->trigger();
>         $events = $sink->get_events();
>         $event = reset($events);
> 
>         // Check that the event data is valid.
>         $this->assertInstanceOf('\mod_quiz\event\page_break_created', $event);
>         $this->assertEquals(context_module::instance($quizobj->get_cmid()), $event->get_context());
>         $this->assertEventContextNotUsed($event);
>     }
> 
>     /**
>      * Test the page break deleted event.
>      *
>      * There is no external API for deleting page break, so the unit test will simply
>      * create and trigger the event and ensure the event data is returned as expected.
>      */
>     public function test_page_deleted_created() {
>         $quizobj = $this->prepare_quiz();
> 
>         $params = [
>             'objectid' => 1,
>             'context' => context_module::instance($quizobj->get_cmid()),
>             'other' => [
>                 'quizid' => $quizobj->get_quizid(),
>                 'slotnumber' => 3,
>             ]
>         ];
>         $event = \mod_quiz\event\page_break_deleted::create($params);
> 
>         // Trigger and capture the event.
>         $sink = $this->redirectEvents();
>         $event->trigger();
>         $events = $sink->get_events();
>         $event = reset($events);
> 
>         // Check that the event data is valid.
>         $this->assertInstanceOf('\mod_quiz\event\page_break_deleted', $event);
>         $this->assertEquals(context_module::instance($quizobj->get_cmid()), $event->get_context());
>         $this->assertEventContextNotUsed($event);
>     }
> 
>     /**
>      * Test the quiz grade updated event.
>      *
>      * There is no external API for updating quiz grade, so the unit test will simply
>      * create and trigger the event and ensure the event data is returned as expected.
>      */
>     public function test_quiz_grade_updated() {
>         $quizobj = $this->prepare_quiz();
> 
>         $params = [
>             'objectid' => $quizobj->get_quizid(),
>             'context' => context_module::instance($quizobj->get_cmid()),
>             'other' => [
>                 'oldgrade' => 1,
>                 'newgrade' => 3,
>             ]
>         ];
>         $event = \mod_quiz\event\quiz_grade_updated::create($params);
> 
>         // Trigger and capture the event.
>         $sink = $this->redirectEvents();
>         $event->trigger();
>         $events = $sink->get_events();
>         $event = reset($events);
> 
>         // Check that the event data is valid.
>         $this->assertInstanceOf('\mod_quiz\event\quiz_grade_updated', $event);
>         $this->assertEquals(context_module::instance($quizobj->get_cmid()), $event->get_context());
>         $this->assertEventContextNotUsed($event);
>     }
> 
>     /**
>      * Test the quiz re-paginated event.
>      *
>      * There is no external API for re-paginating quiz, so the unit test will simply
>      * create and trigger the event and ensure the event data is returned as expected.
>      */
>     public function test_quiz_repaginated() {
>         $quizobj = $this->prepare_quiz();
> 
>         $params = [
>             'objectid' => $quizobj->get_quizid(),
>             'context' => context_module::instance($quizobj->get_cmid()),
>             'other' => [
>                 'slotsperpage' => 3,
>             ]
>         ];
>         $event = \mod_quiz\event\quiz_repaginated::create($params);
> 
>         // Trigger and capture the event.
>         $sink = $this->redirectEvents();
>         $event->trigger();
>         $events = $sink->get_events();
>         $event = reset($events);
> 
>         // Check that the event data is valid.
>         $this->assertInstanceOf('\mod_quiz\event\quiz_repaginated', $event);
>         $this->assertEquals(context_module::instance($quizobj->get_cmid()), $event->get_context());
>         $this->assertEventContextNotUsed($event);
>     }
> 
>     /**
>      * Test the section break created event.
>      *
>      * There is no external API for creating section break, so the unit test will simply
>      * create and trigger the event and ensure the event data is returned as expected.
>      */
>     public function test_section_break_created() {
>         $quizobj = $this->prepare_quiz();
> 
>         $params = [
>             'objectid' => 1,
>             'context' => context_module::instance($quizobj->get_cmid()),
>             'other' => [
>                 'quizid' => $quizobj->get_quizid(),
>                 'firstslotid' => 1,
>                 'firstslotnumber' => 2,
>                 'title' => 'New title'
>             ]
>         ];
>         $event = \mod_quiz\event\section_break_created::create($params);
> 
>         // Trigger and capture the event.
>         $sink = $this->redirectEvents();
>         $event->trigger();
>         $events = $sink->get_events();
>         $event = reset($events);
> 
>         // Check that the event data is valid.
>         $this->assertInstanceOf('\mod_quiz\event\section_break_created', $event);
>         $this->assertEquals(context_module::instance($quizobj->get_cmid()), $event->get_context());
>         $this->assertStringContainsString($params['other']['title'], $event->get_description());
>         $this->assertEventContextNotUsed($event);
>     }
> 
>     /**
>      * Test the section break deleted event.
>      *
>      * There is no external API for deleting section break, so the unit test will simply
>      * create and trigger the event and ensure the event data is returned as expected.
>      */
>     public function test_section_break_deleted() {
>         $quizobj = $this->prepare_quiz();
> 
>         $params = [
>             'objectid' => 1,
>             'context' => context_module::instance($quizobj->get_cmid()),
>             'other' => [
>                 'quizid' => $quizobj->get_quizid(),
>                 'firstslotid' => 1,
>                 'firstslotnumber' => 2
>             ]
>         ];
>         $event = \mod_quiz\event\section_break_deleted::create($params);
> 
>         // Trigger and capture the event.
>         $sink = $this->redirectEvents();
>         $event->trigger();
>         $events = $sink->get_events();
>         $event = reset($events);
> 
>         // Check that the event data is valid.
>         $this->assertInstanceOf('\mod_quiz\event\section_break_deleted', $event);
>         $this->assertEquals(context_module::instance($quizobj->get_cmid()), $event->get_context());
>         $this->assertEventContextNotUsed($event);
>     }
> 
>     /**
>      * Test the section shuffle updated event.
>      *
>      * There is no external API for updating section shuffle, so the unit test will simply
>      * create and trigger the event and ensure the event data is returned as expected.
>      */
>     public function test_section_shuffle_updated() {
>         $quizobj = $this->prepare_quiz();
> 
>         $params = [
>             'objectid' => 1,
>             'context' => context_module::instance($quizobj->get_cmid()),
>             'other' => [
>                 'quizid' => $quizobj->get_quizid(),
>                 'firstslotnumber' => 2,
>                 'shuffle' => true
>             ]
>         ];
>         $event = \mod_quiz\event\section_shuffle_updated::create($params);
> 
>         // Trigger and capture the event.
>         $sink = $this->redirectEvents();
>         $event->trigger();
>         $events = $sink->get_events();
>         $event = reset($events);
> 
>         // Check that the event data is valid.
>         $this->assertInstanceOf('\mod_quiz\event\section_shuffle_updated', $event);
>         $this->assertEquals(context_module::instance($quizobj->get_cmid()), $event->get_context());
>         $this->assertEventContextNotUsed($event);
>     }
> 
>     /**
>      * Test the section title updated event.
>      *
>      * There is no external API for updating section title, so the unit test will simply
>      * create and trigger the event and ensure the event data is returned as expected.
>      */
>     public function test_section_title_updated() {
>         $quizobj = $this->prepare_quiz();
> 
>         $params = [
>             'objectid' => 1,
>             'context' => context_module::instance($quizobj->get_cmid()),
>             'other' => [
>                 'quizid' => $quizobj->get_quizid(),
>                 'firstslotid' => 1,
>                 'firstslotnumber' => 2,
>                 'newtitle' => 'New title'
>             ]
>         ];
>         $event = \mod_quiz\event\section_title_updated::create($params);
> 
>         // Trigger and capture the event.
>         $sink = $this->redirectEvents();
>         $event->trigger();
>         $events = $sink->get_events();
>         $event = reset($events);
> 
>         // Check that the event data is valid.
>         $this->assertInstanceOf('\mod_quiz\event\section_title_updated', $event);
>         $this->assertEquals(context_module::instance($quizobj->get_cmid()), $event->get_context());
>         $this->assertStringContainsString($params['other']['newtitle'], $event->get_description());
>         $this->assertEventContextNotUsed($event);
>     }
> 
>     /**
>      * Test the slot created event.
>      *
>      * There is no external API for creating slot, so the unit test will simply
>      * create and trigger the event and ensure the event data is returned as expected.
>      */
>     public function test_slot_created() {
>         $quizobj = $this->prepare_quiz();
> 
>         $params = [
>             'objectid' => 1,
>             'context' => context_module::instance($quizobj->get_cmid()),
>             'other' => [
>                 'quizid' => $quizobj->get_quizid(),
>                 'slotnumber' => 1,
>                 'page' => 1
>             ]
>         ];
>         $event = \mod_quiz\event\slot_created::create($params);
> 
>         // Trigger and capture the event.
>         $sink = $this->redirectEvents();
>         $event->trigger();
>         $events = $sink->get_events();
>         $event = reset($events);
> 
>         // Check that the event data is valid.
>         $this->assertInstanceOf('\mod_quiz\event\slot_created', $event);
>         $this->assertEquals(context_module::instance($quizobj->get_cmid()), $event->get_context());
>         $this->assertEventContextNotUsed($event);
>     }
> 
>     /**
>      * Test the slot deleted event.
>      *
>      * There is no external API for deleting slot, so the unit test will simply
>      * create and trigger the event and ensure the event data is returned as expected.
>      */
>     public function test_slot_deleted() {
>         $quizobj = $this->prepare_quiz();
> 
>         $params = [
>             'objectid' => 1,
>             'context' => context_module::instance($quizobj->get_cmid()),
>             'other' => [
>                 'quizid' => $quizobj->get_quizid(),
>                 'slotnumber' => 1,
>             ]
>         ];
>         $event = \mod_quiz\event\slot_deleted::create($params);
> 
>         // Trigger and capture the event.
>         $sink = $this->redirectEvents();
>         $event->trigger();
>         $events = $sink->get_events();
>         $event = reset($events);
> 
>         // Check that the event data is valid.
>         $this->assertInstanceOf('\mod_quiz\event\slot_deleted', $event);
>         $this->assertEquals(context_module::instance($quizobj->get_cmid()), $event->get_context());
>         $this->assertEventContextNotUsed($event);
>     }
> 
>     /**
>      * Test the slot mark updated event.
>      *
>      * There is no external API for updating slot mark, so the unit test will simply
>      * create and trigger the event and ensure the event data is returned as expected.
>      */
>     public function test_slot_mark_updated() {
>         $quizobj = $this->prepare_quiz();
> 
>         $params = [
>             'objectid' => 1,
>             'context' => context_module::instance($quizobj->get_cmid()),
>             'other' => [
>                 'quizid' => $quizobj->get_quizid(),
>                 'previousmaxmark' => 1,
>                 'newmaxmark' => 2,
>             ]
>         ];
>         $event = \mod_quiz\event\slot_mark_updated::create($params);
> 
>         // Trigger and capture the event.
>         $sink = $this->redirectEvents();
>         $event->trigger();
>         $events = $sink->get_events();
>         $event = reset($events);
> 
>         // Check that the event data is valid.
>         $this->assertInstanceOf('\mod_quiz\event\slot_mark_updated', $event);
>         $this->assertEquals(context_module::instance($quizobj->get_cmid()), $event->get_context());
>         $this->assertEventContextNotUsed($event);
>     }
> 
>     /**
>      * Test the slot moved event.
>      *
>      * There is no external API for moving slot, so the unit test will simply
>      * create and trigger the event and ensure the event data is returned as expected.
>      */
>     public function test_slot_moved() {
>         $quizobj = $this->prepare_quiz();
> 
>         $params = [
>             'objectid' => 1,
>             'context' => context_module::instance($quizobj->get_cmid()),
>             'other' => [
>                 'quizid' => $quizobj->get_quizid(),
>                 'previousslotnumber' => 1,
>                 'afterslotnumber' => 2,
>                 'page' => 1
>             ]
>         ];
>         $event = \mod_quiz\event\slot_moved::create($params);
> 
>         // Trigger and capture the event.
>         $sink = $this->redirectEvents();
>         $event->trigger();
>         $events = $sink->get_events();
>         $event = reset($events);
> 
>         // Check that the event data is valid.
>         $this->assertInstanceOf('\mod_quiz\event\slot_moved', $event);
>         $this->assertEquals(context_module::instance($quizobj->get_cmid()), $event->get_context());
>         $this->assertEventContextNotUsed($event);
>     }
> 
>     /**
>      * Test the slot require previous updated event.
>      *
>      * There is no external API for updating slot require previous option, so the unit test will simply
>      * create and trigger the event and ensure the event data is returned as expected.
>      */
>     public function test_slot_requireprevious_updated() {
>         $quizobj = $this->prepare_quiz();
> 
>         $params = [
>             'objectid' => 1,
>             'context' => context_module::instance($quizobj->get_cmid()),
>             'other' => [
>                 'quizid' => $quizobj->get_quizid(),
>                 'requireprevious' => true
>             ]
>         ];
>         $event = \mod_quiz\event\slot_requireprevious_updated::create($params);
> 
>         // Trigger and capture the event.
>         $sink = $this->redirectEvents();
>         $event->trigger();
>         $events = $sink->get_events();
>         $event = reset($events);
> 
>         // Check that the event data is valid.
>         $this->assertInstanceOf('\mod_quiz\event\slot_requireprevious_updated', $event);
>         $this->assertEquals(context_module::instance($quizobj->get_cmid()), $event->get_context());
>         $this->assertEventContextNotUsed($event);