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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/>.
/**
* Contains class containing unit tests for mod/chat/lib.php.
*
* @package mod_chat
* @category test
* @copyright 2017 Mark Nelson <markn@moodle.com>
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
defined('MOODLE_INTERNAL') || die();
/**
* Class containing unit tests for mod/chat/lib.php.
*
* @package mod_chat
* @category test
* @copyright 2017 Mark Nelson <markn@moodle.com>
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class mod_chat_lib_testcase extends advanced_testcase {
public function setUp() {
$this->resetAfterTest();
}
/*
* The chat's event should not be shown to a user when the user cannot view the chat at all.
*/
public function test_chat_core_calendar_provide_event_action_in_hidden_section() {
global $CFG;
$this->setAdminUser();
// Create a course.
$course = $this->getDataGenerator()->create_course();
// Create a student.
$student = $this->getDataGenerator()->create_and_enrol($course, 'student');
// Create a chat.
$chat = $this->getDataGenerator()->create_module('chat', array('course' => $course->id,
'chattime' => usergetmidnight(time())));
// Create a calendar event.
$event = $this->create_action_event($course->id, $chat->id, CHAT_EVENT_TYPE_CHATTIME);
// Set sections 0 as hidden.
set_section_visible($course->id, 0, 0);
// Now, log out.
$CFG->forcelogin = true; // We don't want to be logged in as guest, as guest users might still have some capabilities.
$this->setUser();
// Create an action factory.
$factory = new \core_calendar\action_factory();
// Decorate action event for the student.
$actionevent = mod_chat_core_calendar_provide_event_action($event, $factory, $student->id);
// Confirm the event is not shown at all.
$this->assertNull($actionevent);
}
/*
* The chat's event should not be shown to a user who does not have permission to view the chat at all.
*/
public function test_chat_core_calendar_provide_event_action_for_non_user() {
global $CFG;
$this->setAdminUser();
// Create a course.
$course = $this->getDataGenerator()->create_course();
// Create a chat.
$chat = $this->getDataGenerator()->create_module('chat', array('course' => $course->id,
'chattime' => usergetmidnight(time())));
// Create a calendar event.
$event = $this->create_action_event($course->id, $chat->id, CHAT_EVENT_TYPE_CHATTIME);
// Now, log out.
$CFG->forcelogin = true; // We don't want to be logged in as guest, as guest users might still have some capabilities.
$this->setUser();
// Create an action factory.
$factory = new \core_calendar\action_factory();
// Decorate action event.
$actionevent = mod_chat_core_calendar_provide_event_action($event, $factory);
// Confirm the event is not shown at all.
$this->assertNull($actionevent);
}
public function test_chat_core_calendar_provide_event_action_chattime_event_yesterday() {
$this->setAdminUser();
// Create a course.
$course = $this->getDataGenerator()->create_course();
// Create a chat.
$chat = $this->getDataGenerator()->create_module('chat', array('course' => $course->id,
'chattime' => time() - DAYSECS));
// Create a calendar event.
$event = $this->create_action_event($course->id, $chat->id, CHAT_EVENT_TYPE_CHATTIME);
// Create an action factory.
$factory = new \core_calendar\action_factory();
// Decorate action event.
$actionevent = mod_chat_core_calendar_provide_event_action($event, $factory);
// Confirm the event is not shown at all.
$this->assertNull($actionevent);
}
public function test_chat_core_calendar_provide_event_action_chattime_event_yesterday_for_user() {
global $CFG;
$this->setAdminUser();
// Create a course.
$course = $this->getDataGenerator()->create_course();
// Enrol a student in the course.
$student = $this->getDataGenerator()->create_and_enrol($course, 'student');
// Create a chat.
$chat = $this->getDataGenerator()->create_module('chat', array('course' => $course->id,
'chattime' => time() - DAYSECS));
// Create a calendar event.
$event = $this->create_action_event($course->id, $chat->id, CHAT_EVENT_TYPE_CHATTIME);
// Now, log out.
$CFG->forcelogin = true; // We don't want to be logged in as guest, as guest users have mod/chat:view capability by default.
$this->setUser();
// Create an action factory.
$factory = new \core_calendar\action_factory();
// Decorate action event for the student.
$actionevent = mod_chat_core_calendar_provide_event_action($event, $factory, $student->id);
// Confirm the event is not shown at all.
$this->assertNull($actionevent);
}
public function test_chat_core_calendar_provide_event_action_chattime_event_today() {
$this->setAdminUser();
// Create a course.
$course = $this->getDataGenerator()->create_course();
// Create a chat.
$chat = $this->getDataGenerator()->create_module('chat', array('course' => $course->id,
'chattime' => usergetmidnight(time())));
// Create a calendar event.
$event = $this->create_action_event($course->id, $chat->id, CHAT_EVENT_TYPE_CHATTIME);
// Create an action factory.
$factory = new \core_calendar\action_factory();
// Decorate action event.
$actionevent = mod_chat_core_calendar_provide_event_action($event, $factory);
// Confirm the event was decorated.
$this->assertInstanceOf('\core_calendar\local\event\value_objects\action', $actionevent);
$this->assertEquals(get_string('enterchat', 'chat'), $actionevent->get_name());
$this->assertInstanceOf('moodle_url', $actionevent->get_url());
$this->assertEquals(1, $actionevent->get_item_count());
$this->assertTrue($actionevent->is_actionable());
}
public function test_chat_core_calendar_provide_event_action_chattime_event_today_for_user() {
global $CFG;
$this->setAdminUser();
// Create a course.
$course = $this->getDataGenerator()->create_course();
// Enrol a student in the course.
$student = $this->getDataGenerator()->create_and_enrol($course, 'student');
// Create a chat.
$chat = $this->getDataGenerator()->create_module('chat', array('course' => $course->id,
'chattime' => usergetmidnight(time())));
// Create a calendar event.
$event = $this->create_action_event($course->id, $chat->id, CHAT_EVENT_TYPE_CHATTIME);
// Now, log out.
$CFG->forcelogin = true; // We don't want to be logged in as guest, as guest users have mod/chat:view capability by default.
$this->setUser();
// Create an action factory.
$factory = new \core_calendar\action_factory();
// Decorate action event for the student.
$actionevent = mod_chat_core_calendar_provide_event_action($event, $factory, $student->id);
// Confirm the event was decorated.
$this->assertInstanceOf('\core_calendar\local\event\value_objects\action', $actionevent);
$this->assertEquals(get_string('enterchat', 'chat'), $actionevent->get_name());
$this->assertInstanceOf('moodle_url', $actionevent->get_url());
$this->assertEquals(1, $actionevent->get_item_count());
$this->assertTrue($actionevent->is_actionable());
}
public function test_chat_core_calendar_provide_event_action_chattime_event_tonight() {
$this->setAdminUser();
// Create a course.
$course = $this->getDataGenerator()->create_course();
// Create a chat.
$chat = $this->getDataGenerator()->create_module('chat', array('course' => $course->id,
'chattime' => usergetmidnight(time()) + (23 * HOURSECS)));
// Create a calendar event.
$event = $this->create_action_event($course->id, $chat->id, CHAT_EVENT_TYPE_CHATTIME);
// Create an action factory.
$factory = new \core_calendar\action_factory();
// Decorate action event.
$actionevent = mod_chat_core_calendar_provide_event_action($event, $factory);
// Confirm the event was decorated.
$this->assertInstanceOf('\core_calendar\local\event\value_objects\action', $actionevent);
$this->assertEquals(get_string('enterchat', 'chat'), $actionevent->get_name());
$this->assertInstanceOf('moodle_url', $actionevent->get_url());
$this->assertEquals(1, $actionevent->get_item_count());
$this->assertTrue($actionevent->is_actionable());
}
public function test_chat_core_calendar_provide_event_action_chattime_event_tonight_for_user() {
global $CFG;
$this->setAdminUser();
// Create a course.
$course = $this->getDataGenerator()->create_course();
// Enrol a student in the course.
$student = $this->getDataGenerator()->create_and_enrol($course, 'student');
// Create a chat.
$chat = $this->getDataGenerator()->create_module('chat', array('course' => $course->id,
'chattime' => usergetmidnight(time()) + (23 * HOURSECS)));
// Create a calendar event.
$event = $this->create_action_event($course->id, $chat->id, CHAT_EVENT_TYPE_CHATTIME);
// Now, log out.
$CFG->forcelogin = true; // We don't want to be logged in as guest, as guest users have mod/chat:view capability by default.
$this->setUser();
// Create an action factory.
$factory = new \core_calendar\action_factory();
// Decorate action event for the student.
$actionevent = mod_chat_core_calendar_provide_event_action($event, $factory, $student->id);
// Confirm the event was decorated.
$this->assertInstanceOf('\core_calendar\local\event\value_objects\action', $actionevent);
$this->assertEquals(get_string('enterchat', 'chat'), $actionevent->get_name());
$this->assertInstanceOf('moodle_url', $actionevent->get_url());
$this->assertEquals(1, $actionevent->get_item_count());
$this->assertTrue($actionevent->is_actionable());
}
public function test_chat_core_calendar_provide_event_action_chattime_event_tomorrow() {
$this->setAdminUser();
// Create a course.
$course = $this->getDataGenerator()->create_course();
// Create a chat.
$chat = $this->getDataGenerator()->create_module('chat', array('course' => $course->id,
'chattime' => time() + DAYSECS));
// Create a calendar event.
$event = $this->create_action_event($course->id, $chat->id, CHAT_EVENT_TYPE_CHATTIME);
// Create an action factory.
$factory = new \core_calendar\action_factory();
// Decorate action event.
$actionevent = mod_chat_core_calendar_provide_event_action($event, $factory);
// Confirm the event was decorated.
$this->assertInstanceOf('\core_calendar\local\event\value_objects\action', $actionevent);
$this->assertEquals(get_string('enterchat', 'chat'), $actionevent->get_name());
$this->assertInstanceOf('moodle_url', $actionevent->get_url());
$this->assertEquals(1, $actionevent->get_item_count());
$this->assertFalse($actionevent->is_actionable());
}
public function test_chat_core_calendar_provide_event_action_chattime_event_tomorrow_for_user() {
global $CFG;
$this->setAdminUser();
// Create a course.
$course = $this->getDataGenerator()->create_course();
// Enrol a student in the course.
$student = $this->getDataGenerator()->create_and_enrol($course, 'student');
// Create a chat.
$chat = $this->getDataGenerator()->create_module('chat', array('course' => $course->id,
'chattime' => time() + DAYSECS));
// Create a calendar event.
$event = $this->create_action_event($course->id, $chat->id, CHAT_EVENT_TYPE_CHATTIME);
// Now, log out.
$CFG->forcelogin = true; // We don't want to be logged in as guest, as guest users have mod/chat:view capability by default.
$this->setUser();
// Create an action factory.
$factory = new \core_calendar\action_factory();
// Decorate action event for the student.
$actionevent = mod_chat_core_calendar_provide_event_action($event, $factory, $student->id);
// Confirm the event was decorated.
$this->assertInstanceOf('\core_calendar\local\event\value_objects\action', $actionevent);
$this->assertEquals(get_string('enterchat', 'chat'), $actionevent->get_name());
$this->assertInstanceOf('moodle_url', $actionevent->get_url());
$this->assertEquals(1, $actionevent->get_item_count());
$this->assertFalse($actionevent->is_actionable());
}
public function test_chat_core_calendar_provide_event_action_chattime_event_different_timezones() {
global $CFG;
$this->setAdminUser();
// Create a course.
$course = $this->getDataGenerator()->create_course();
$hour = gmdate('H');
// This could have been much easier if MDL-37327 were implemented.
// We don't know when this test is being ran and there is no standard way to
// mock the time() function (MDL-37327 to handle that).
if ($hour < 10) {
$timezone1 = 'UTC'; // GMT.
$timezone2 = 'Pacific/Pago_Pago'; // GMT -11:00.
} else if ($hour < 11) {
$timezone1 = 'Pacific/Kiritimati'; // GMT +14:00.
$timezone2 = 'America/Sao_Paulo'; // GMT -03:00.
} else {
$timezone1 = 'Pacific/Kiritimati'; // GMT +14:00.
$timezone2 = 'UTC'; // GMT.
}
$this->setTimezone($timezone2);
// Enrol 2 students with different timezones in the course.
$student1 = $this->getDataGenerator()->create_and_enrol($course, 'student', (object)['timezone' => $timezone1]);
$student2 = $this->getDataGenerator()->create_and_enrol($course, 'student', (object)['timezone' => $timezone2]);
// Create a chat.
$chat1 = $this->getDataGenerator()->create_module('chat', array('course' => $course->id,
'chattime' => mktime(1, 0, 0))); // This is always yesterday in timezone1 time
// and always today in timezone2 time.
// Create a chat.
$chat2 = $this->getDataGenerator()->create_module('chat', array('course' => $course->id,
'chattime' => mktime(1, 0, 0) + DAYSECS)); // This is always today in timezone1 time
// and always tomorrow in timezone2 time.
// Create calendar events for the 2 chats above.
$event1 = $this->create_action_event($course->id, $chat1->id, CHAT_EVENT_TYPE_CHATTIME);
$event2 = $this->create_action_event($course->id, $chat2->id, CHAT_EVENT_TYPE_CHATTIME);
// Now, log out.
$CFG->forcelogin = true; // We don't want to be logged in as guest, as guest users have mod/chat:view capability by default.
$this->setUser();
// Create an action factory.
$factory = new \core_calendar\action_factory();
// Decorate action event for student1.
$actionevent11 = mod_chat_core_calendar_provide_event_action($event1, $factory, $student1->id);
$actionevent12 = mod_chat_core_calendar_provide_event_action($event1, $factory, $student2->id);
$actionevent21 = mod_chat_core_calendar_provide_event_action($event2, $factory, $student1->id);
$actionevent22 = mod_chat_core_calendar_provide_event_action($event2, $factory, $student2->id);
// Confirm event1 is not shown to student1 at all.
$this->assertNull($actionevent11, 'Failed for UTC time ' . gmdate('H:i'));
// Confirm event1 was decorated for student2 and it is actionable.
$this->assertInstanceOf('\core_calendar\local\event\value_objects\action', $actionevent12);
$this->assertEquals(get_string('enterchat', 'chat'), $actionevent12->get_name());
$this->assertInstanceOf('moodle_url', $actionevent12->get_url());
$this->assertEquals(1, $actionevent12->get_item_count());
$this->assertTrue($actionevent12->is_actionable());
// Confirm event2 was decorated for student1 and it is actionable.
$this->assertInstanceOf('\core_calendar\local\event\value_objects\action', $actionevent21);
$this->assertEquals(get_string('enterchat', 'chat'), $actionevent21->get_name());
$this->assertInstanceOf('moodle_url', $actionevent21->get_url());
$this->assertEquals(1, $actionevent21->get_item_count());
$this->assertTrue($actionevent21->is_actionable());
// Confirm event2 was decorated for student2 and it is not actionable.
$this->assertInstanceOf('\core_calendar\local\event\value_objects\action', $actionevent22);
$this->assertEquals(get_string('enterchat', 'chat'), $actionevent22->get_name());
$this->assertInstanceOf('moodle_url', $actionevent22->get_url());
$this->assertEquals(1, $actionevent22->get_item_count());
$this->assertFalse($actionevent22->is_actionable());
}
/**
* Test for chat_get_sessions().
*/
public function test_chat_get_sessions() {
global $DB;
$this->resetAfterTest();
$generator = $this->getDataGenerator();
// Setup test data.
$this->setAdminUser();
$course = $generator->create_course();
$chat = $generator->create_module('chat', ['course' => $course->id]);
$user1 = $generator->create_user();
$user2 = $generator->create_user();
$studentrole = $DB->get_record('role', ['shortname' => 'student']);
$generator->enrol_user($user1->id, $course->id, $studentrole->id);
$generator->enrol_user($user2->id, $course->id, $studentrole->id);
// Login as user 1.
$this->setUser($user1);
$chatsid = chat_login_user($chat->id, 'ajax', 0, $course);
$chatuser = $DB->get_record('chat_users', ['sid' => $chatsid]);
// Get the messages for this chat session.
$messages = chat_get_session_messages($chat->id, false, 0, 0, 'timestamp DESC');
// We should have just 1 system (enter) messages.
$this->assertCount(1, $messages);
// This is when the session starts (when the first message - enter - has been sent).
$sessionstart = reset($messages)->timestamp;
// Send some messages.
chat_send_chatmessage($chatuser, 'hello!');
chat_send_chatmessage($chatuser, 'bye bye!');
// Login as user 2.
$this->setUser($user2);
$chatsid = chat_login_user($chat->id, 'ajax', 0, $course);
$chatuser = $DB->get_record('chat_users', ['sid' => $chatsid]);
// Send a message and take note of this message ID.
$messageid = chat_send_chatmessage($chatuser, 'greetings!');
// This is when the session ends (timestamp of the last message sent to the chat).
$sessionend = $DB->get_field('chat_messages', 'timestamp', ['id' => $messageid]);
// Get the messages for this chat session.
$messages = chat_get_session_messages($chat->id, false, 0, 0, 'timestamp DESC');
// We should have 3 user and 2 system (enter) messages.
$this->assertCount(5, $messages);
// Fetch the chat sessions from the messages we retrieved.
$sessions = chat_get_sessions($messages, true);
// There should be only one session.
$this->assertCount(1, $sessions);
// Get this session.
$session = reset($sessions);
// Confirm that the start and end times of the session matches.
$this->assertEquals($sessionstart, $session->sessionstart);
$this->assertEquals($sessionend, $session->sessionend);
// Confirm we have 2 participants in the chat.
$this->assertCount(2, $session->sessionusers);
}
/**
* Test for chat_get_sessions with messages belonging to multiple sessions.
*/
public function test_chat_get_sessions_multiple() {
$messages = [];
$gap = 5; // 5 secs.
$now = time();
$timestamp = $now;
// Messages belonging to 3 sessions. Session 1 has 10 messages, 2 has 15, 3 has 25.
$sessionusers = [];
$sessiontimes = [];
$session = 0; // Incomplete session.
for ($i = 1; $i <= 50; $i++) {
// Take note of expected session times as we go through.
switch ($i) {
case 1:
// Session 1 start time.
$sessiontimes[0]['start'] = $timestamp;
break;
case 10:
// Session 1 end time.
$sessiontimes[0]['end'] = $timestamp;
break;
case 11:
// Session 2 start time.
$sessiontimes[1]['start'] = $timestamp;
break;
case 25:
// Session 2 end time.
$sessiontimes[1]['end'] = $timestamp;
break;
case 26:
// Session 3 start time.
$sessiontimes[2]['start'] = $timestamp;
break;
case 50:
// Session 3 end time.
$sessiontimes[2]['end'] = $timestamp;
break;
}
// User 1 to 5.
$user = rand(1, 5);
// Let's also include system messages as well. Give them to pop in 1-in-10 chance.
$issystem = rand(1, 10) == 10;
if ($issystem) {
$message = 'enter';
} else {
$message = 'Message ' . $i;
if (!isset($sessionusers[$session][$user])) {
$sessionusers[$session][$user] = 1;
} else {
$sessionusers[$session][$user]++;
}
}
$messages[] = (object)[
'id' => $i,
'chatid' => 1,
'userid' => $user,
'message' => $message,
'issystem' => $issystem,
'timestamp' => $timestamp,
];
// Set the next timestamp.
if ($i == 10 || $i == 25) {
// New session.
$session++;
$timestamp += CHAT_SESSION_GAP + 1;
} else {
$timestamp += $gap;
}
}
// Reverse sort the messages so they're in descending order.
rsort($messages);
// Get chat sessions showing only complete ones.
$completesessions = chat_get_sessions($messages);
// Session 1 is incomplete, so there should only be 2 sessions when $showall is false.
$this->assertCount(2, $completesessions);
// Reverse sort sessions so they are in ascending order matching our expected session times and users.
$completesessions = array_reverse($completesessions);
foreach ($completesessions as $index => $session) {
// We increment index by 1 because the incomplete expected session (index=0) is not included.
$expectedindex = $index + 1;
// Check the session users.
$users = $sessionusers[$expectedindex];
$this->assertCount(count($users), $session->sessionusers);
// Check the message counts for each user in this session.
foreach ($users as $userid => $messagecount) {
$this->assertEquals($messagecount, $session->sessionusers[$userid]);
}
$sessionstart = $sessiontimes[$expectedindex]['start'];
$sessionend = $sessiontimes[$expectedindex]['end'];
$this->assertEquals($sessionstart, $session->sessionstart);
$this->assertEquals($sessionend, $session->sessionend);
}
// Get all the chat sessions.
$allsessions = chat_get_sessions($messages, true);
// When showall is true, we should get 3 sessions.
$this->assertCount(3, $allsessions);
// Reverse sort sessions so they are in ascending order matching our expected session times and users.
$allsessions = array_reverse($allsessions);
foreach ($allsessions as $index => $session) {
// Check the session users.
$users = $sessionusers[$index];
$this->assertCount(count($users), $session->sessionusers);
// Check the message counts for each user in this session.
foreach ($users as $userid => $messagecount) {
$this->assertEquals($messagecount, $session->sessionusers[$userid]);
}
$sessionstart = $sessiontimes[$index]['start'];
$sessionend = $sessiontimes[$index]['end'];
$this->assertEquals($sessionstart, $session->sessionstart);
$this->assertEquals($sessionend, $session->sessionend);
}
}
public function test_chat_core_calendar_provide_event_action_already_completed() {
set_config('enablecompletion', 1);
$this->setAdminUser();
// Create the activity.
$course = $this->getDataGenerator()->create_course(array('enablecompletion' => 1));
$chat = $this->getDataGenerator()->create_module('chat', array('course' => $course->id),
array('completion' => 2, 'completionview' => 1, 'completionexpected' => time() + DAYSECS));
// Get some additional data.
$cm = get_coursemodule_from_instance('chat', $chat->id);
// Create a calendar event.
$event = $this->create_action_event($course->id, $chat->id,
\core_completion\api::COMPLETION_EVENT_TYPE_DATE_COMPLETION_EXPECTED);
// Mark the activity as completed.
$completion = new completion_info($course);
$completion->set_module_viewed($cm);
// Create an action factory.
$factory = new \core_calendar\action_factory();
// Decorate action event.
$actionevent = mod_chat_core_calendar_provide_event_action($event, $factory);
// Ensure result was null.
$this->assertNull($actionevent);
}
public function test_chat_core_calendar_provide_event_action_already_completed_for_user() {
set_config('enablecompletion', 1);
$this->setAdminUser();
// Create the activity.
$course = $this->getDataGenerator()->create_course(array('enablecompletion' => 1));
$chat = $this->getDataGenerator()->create_module('chat', array('course' => $course->id),
array('completion' => 2, 'completionview' => 1, 'completionexpected' => time() + DAYSECS));
// Enrol a student in the course.
$student = $this->getDataGenerator()->create_and_enrol($course, 'student');
// Get some additional data.
$cm = get_coursemodule_from_instance('chat', $chat->id);
// Create a calendar event.
$event = $this->create_action_event($course->id, $chat->id,
\core_completion\api::COMPLETION_EVENT_TYPE_DATE_COMPLETION_EXPECTED);
// Mark the activity as completed for the student.
$completion = new completion_info($course);
$completion->set_module_viewed($cm, $student->id);
// Create an action factory.
$factory = new \core_calendar\action_factory();
// Decorate action event for the student.
$actionevent = mod_chat_core_calendar_provide_event_action($event, $factory, $student->id);
// Ensure result was null.
$this->assertNull($actionevent);
}
/**
* Creates an action event.
*
* @param int $courseid
* @param int $instanceid The chat id.
* @param string $eventtype The event type. eg. ASSIGN_EVENT_TYPE_DUE.
* @return bool|calendar_event
*/
private function create_action_event($courseid, $instanceid, $eventtype) {
$event = new stdClass();
$event->name = 'Calendar event';
$event->modulename = 'chat';
$event->courseid = $courseid;
$event->instance = $instanceid;
$event->type = CALENDAR_EVENT_TYPE_ACTION;
$event->eventtype = $eventtype;
$event->timestart = time();
return calendar_event::create($event);
}
/**
* A user who does not have capabilities to add events to the calendar should be able to create an chat.
*/
public function test_creation_with_no_calendar_capabilities() {
$this->resetAfterTest();
$course = self::getDataGenerator()->create_course();
$context = context_course::instance($course->id);
$user = self::getDataGenerator()->create_and_enrol($course, 'editingteacher');
$roleid = self::getDataGenerator()->create_role();
self::getDataGenerator()->role_assign($roleid, $user->id, $context->id);
assign_capability('moodle/calendar:manageentries', CAP_PROHIBIT, $roleid, $context, true);
$generator = self::getDataGenerator()->get_plugin_generator('mod_chat');
// Create an instance as a user without the calendar capabilities.
$this->setUser($user);
$params = array(
'course' => $course->id,
'chattime' => time() + 500,
);
$generator->create_instance($params);
}
}