/**
* Test that the discussion subscription cache can filled course-at-a-time.
*/
public function test_discussion_subscription_cache_fill_for_course()
{
global $DB;
$this->resetAfterTest(true);
// Create a course, with a twf.
$course = $this->getDataGenerator()->create_course();
// Create the twfs.
$options = array('course' => $course->id, 'forcesubscribe' => FORUM_DISALLOWSUBSCRIBE);
$disallowtwf = $this->getDataGenerator()->create_module('twf', $options);
$options = array('course' => $course->id, 'forcesubscribe' => FORUM_CHOOSESUBSCRIBE);
$choosetwf = $this->getDataGenerator()->create_module('twf', $options);
$options = array('course' => $course->id, 'forcesubscribe' => FORUM_INITIALSUBSCRIBE);
$initialtwf = $this->getDataGenerator()->create_module('twf', $options);
// Create some users and keep a reference to the first user.
$users = $this->helper_create_users($course, 20);
$user = reset($users);
// Reset the subscription caches.
\mod_twf\subscriptions::reset_twf_cache();
$startcount = $DB->perf_get_reads();
$result = \mod_twf\subscriptions::fill_subscription_cache_for_course($course->id, $user->id);
$this->assertNull($result);
$postfillcount = $DB->perf_get_reads();
$this->assertEquals(1, $postfillcount - $startcount);
$this->assertFalse(\mod_twf\subscriptions::fetch_subscription_cache($disallowtwf->id, $user->id));
$this->assertFalse(\mod_twf\subscriptions::fetch_subscription_cache($choosetwf->id, $user->id));
$this->assertTrue(\mod_twf\subscriptions::fetch_subscription_cache($initialtwf->id, $user->id));
$finalcount = $DB->perf_get_reads();
$this->assertEquals(0, $finalcount - $postfillcount);
// Test for all users.
foreach ($users as $user) {
$result = \mod_twf\subscriptions::fill_subscription_cache_for_course($course->id, $user->id);
$this->assertFalse(\mod_twf\subscriptions::fetch_subscription_cache($disallowtwf->id, $user->id));
$this->assertFalse(\mod_twf\subscriptions::fetch_subscription_cache($choosetwf->id, $user->id));
$this->assertTrue(\mod_twf\subscriptions::fetch_subscription_cache($initialtwf->id, $user->id));
}
$finalcount = $DB->perf_get_reads();
$this->assertEquals(count($users), $finalcount - $postfillcount);
}
