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namespace core_comment;
use comment;
use comment_exception;
use core_comment_external;
/**
* Tests for comments when the context is frozen.
*
* @package core_comment
* @copyright 2019 University of Nottingham
* @author Neill Magill
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class context_freeze_test extends \advanced_testcase {
/**
* Creates a comment by a student.
*
* Returns:
* - The comment object
* - The sudent that wrote the comment
* - The arguments used to create the comment
*
* @param \stdClass $course Moodle course from the datagenerator
* @return array
*/
protected function create_student_comment_and_freeze_course($course): array {
set_config('contextlocking', 1);
$context = \context_course::instance($course->id);
$student = $this->getDataGenerator()->create_and_enrol($course, 'student');
$args = new \stdClass;
$args->context = $context;
$args->course = $course;
$args->area = 'page_comments';
$args->itemid = 0;
$args->component = 'block_comments';
$args->linktext = get_string('showcomments');
$args->notoggle = true;
$args->autostart = true;
$args->displaycancel = false;
// Create a comment by the student.
$this->setUser($student);
$comment = new comment($args);
$newcomment = $comment->add('New comment');
// Freeze the context.
$this->setAdminUser();
$context->set_locked(true);
return [$newcomment, $student, $args];
}
/**
* Test that a student cannot delete their own comments in frozen contexts via the external service.
*/
public function test_delete_student_external() {
global $CFG;
require_once($CFG->dirroot . '/comment/lib.php');
$this->resetAfterTest();
$course = $this->getDataGenerator()->create_course();
list($newcomment, $student, $args) = $this->create_student_comment_and_freeze_course($course);
// Check that a student cannot delete their own comment.
$this->setUser($student);
$studentcomment = new comment($args);
$this->assertFalse($studentcomment->can_delete($newcomment->id));
$this->assertFalse($studentcomment->can_post());
$this->expectException(comment_exception::class);
$this->expectExceptionMessage(get_string('nopermissiontodelentry', 'error'));
core_comment_external::delete_comments([$newcomment->id]);
}
/**
* Test that a student cannot delete their own comments in frozen contexts.
*/
public function test_delete_student() {
global $CFG;
require_once($CFG->dirroot . '/comment/lib.php');
$this->resetAfterTest();
$course = $this->getDataGenerator()->create_course();
list($newcomment, $student, $args) = $this->create_student_comment_and_freeze_course($course);
// Check that a student cannot delete their own comment.
$this->setUser($student);
$studentcomment = new comment($args);
$this->assertFalse($studentcomment->can_delete($newcomment->id));
$this->assertFalse($studentcomment->can_post());
$this->expectException(comment_exception::class);
$this->expectExceptionMessage(get_string('nopermissiontocomment', 'error'));
$studentcomment->delete($newcomment->id);
}
/**
* Test that an admin cannot delete comments in frozen contexts via the external service.
*/
public function test_delete_admin_external() {
global $CFG;
require_once($CFG->dirroot . '/comment/lib.php');
$this->resetAfterTest();
$course = $this->getDataGenerator()->create_course();
list($newcomment, $student, $args) = $this->create_student_comment_and_freeze_course($course);
// Check that the admin user cannot delete the comment.
$admincomment = new comment($args);
$this->assertFalse($admincomment->can_delete($newcomment->id));
$this->assertFalse($admincomment->can_post());
$this->expectException(comment_exception::class);
$this->expectExceptionMessage(get_string('nopermissiontodelentry', 'error'));
core_comment_external::delete_comments([$newcomment->id]);
}
/**
* Test that an admin cannot delete comments in frozen contexts.
*/
public function test_delete_admin() {
global $CFG;
require_once($CFG->dirroot . '/comment/lib.php');
$this->resetAfterTest();
$course = $this->getDataGenerator()->create_course();
list($newcomment, $student, $args) = $this->create_student_comment_and_freeze_course($course);
// Check that the admin user cannot delete the comment.
$admincomment = new comment($args);
$this->assertFalse($admincomment->can_delete($newcomment->id));
$this->assertFalse($admincomment->can_post());
$this->expectException(comment_exception::class);
$this->expectExceptionMessage(get_string('nopermissiontocomment', 'error'));
$admincomment->delete($newcomment->id);
}
}