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✏️ Editing: course_enrolment_manager_test.php

<?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 core_enrol;

use context_course;
use course_enrolment_manager;
use stdClass;

/**
 * Test course_enrolment_manager parts.
 *
 * @package    core_enrol
 * @category   test
 * @copyright  2016 Ruslan Kabalin, Lancaster University
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 * @covers     \course_enrolment_manager
 */
class course_enrolment_manager_test extends \advanced_testcase {
    /**
     * The course used in tests.
     * @var \stdClass
     */
    private $course = null;
    /**
     * List of users used in tests.
     * @var array
     */
    private $users = array();
    /**
     * List of groups used in tests.
     * @var array
     */
    private $groups = array();

/**
     * Tests set up
     */
    protected function setUp(): void {
        global $CFG;
        require_once($CFG->dirroot . '/enrol/locallib.php');
        $this->setAdminUser();

$users = array();
        $groups = array();
        // Create the course and the users.
        $course = $this->getDataGenerator()->create_course();
        $users['user0'] = $this->getDataGenerator()->create_user(
                array('username' => 'user0', 'firstname' => 'user0')); // A user without group.
        $users['user1'] = $this->getDataGenerator()->create_user(
                array('username' => 'user1', 'firstname' => 'user1')); // User for group 1.
        $users['user21'] = $this->getDataGenerator()->create_user(
                array('username' => 'user21', 'firstname' => 'user21')); // Two users for group 2.
        $users['user22'] = $this->getDataGenerator()->create_user(
                array('username' => 'user22', 'firstname' => 'user22'));
        $users['userall'] = $this->getDataGenerator()->create_user(
                array('username' => 'userall', 'firstname' => 'userall')); // A user in all groups.
        $users['usertch'] = $this->getDataGenerator()->create_user(
                array('username' => 'usertch', 'firstname' => 'usertch')); // A user with teacher role.

// Enrol the users in the course.
        $this->getDataGenerator()->enrol_user($users['user0']->id, $course->id, 'student'); // Student.
        $this->getDataGenerator()->enrol_user($users['user1']->id, $course->id, 'student'); // Student.
        $this->getDataGenerator()->enrol_user($users['user21']->id, $course->id, 'student'); // Student.
        $this->getDataGenerator()->enrol_user($users['user22']->id, $course->id, 'student', 'manual', 0, 0, ENROL_USER_SUSPENDED); // Suspended student.
        $this->getDataGenerator()->enrol_user($users['userall']->id, $course->id, 'student'); // Student.
        $this->getDataGenerator()->enrol_user($users['usertch']->id, $course->id, 'editingteacher'); // Teacher.

// Create 2 groups.
        $groups['group1'] = $this->getDataGenerator()->create_group(array('courseid' => $course->id));
        $groups['group2'] = $this->getDataGenerator()->create_group(array('courseid' => $course->id));

// Add the users to the groups.
        $this->getDataGenerator()->create_group_member(
                array('groupid' => $groups['group1']->id, 'userid' => $users['user1']->id));
        $this->getDataGenerator()->create_group_member(
                array('groupid' => $groups['group2']->id, 'userid' => $users['user21']->id));
        $this->getDataGenerator()->create_group_member(
                array('groupid' => $groups['group2']->id, 'userid' => $users['user22']->id));
        $this->getDataGenerator()->create_group_member(
                array('groupid' => $groups['group1']->id, 'userid' => $users['userall']->id));
        $this->getDataGenerator()->create_group_member(
                array('groupid' => $groups['group2']->id, 'userid' => $users['userall']->id));

// Make setup data accessible from test methods.
        $this->course = $course;
        $this->users = $users;
        $this->groups = $groups;

// Make sample users and not enroll to any course.
        $this->getDataGenerator()->create_user([
                'username' => 'testapiuser1',
                'firstname' => 'testapiuser 1'
        ]);
        $this->getDataGenerator()->create_user([
                'username' => 'testapiuser2',
                'firstname' => 'testapiuser 2'
        ]);
        $this->getDataGenerator()->create_user([
                'username' => 'testapiuser3',
                'firstname' => 'testapiuser 3'
        ]);
    }

/**
     * Verify get_total_users() returned number of users expected in every situation.
     */
    public function test_get_total_users() {
        global $PAGE;

$this->resetAfterTest();

// All users filtering.
        $manager = new course_enrolment_manager($PAGE, $this->course);
        $totalusers = $manager->get_total_users();
        $this->assertEquals(6, $totalusers, 'All users must be returned when no filtering is applied.');

// Student role filtering.
        $manager = new course_enrolment_manager($PAGE, $this->course, null, 5);
        $totalusers = $manager->get_total_users();
        $this->assertEquals(5, $totalusers, 'Only students must be returned when student role filtering is applied.');

// Teacher role filtering.
        $manager = new course_enrolment_manager($PAGE, $this->course, null, 3);
        $totalusers = $manager->get_total_users();
        $this->assertEquals(1, $totalusers, 'Only teacher must be returned when teacher role filtering is applied.');

// Search user filtering.
        $manager = new course_enrolment_manager($PAGE, $this->course, null, 0, 'userall');
        $totalusers = $manager->get_total_users();
        $this->assertEquals(1, $totalusers, 'Only searchable user must be returned when search filtering is applied.');

// Group 1 filtering.
        $manager = new course_enrolment_manager($PAGE, $this->course, null, 0, '', $this->groups['group1']->id);
        $totalusers = $manager->get_total_users();
        $this->assertEquals(2, $totalusers, 'Only group members must be returned when group filtering is applied.');

// Group 2 filtering.
        $manager = new course_enrolment_manager($PAGE, $this->course, null, 0, '', $this->groups['group2']->id);
        $totalusers = $manager->get_total_users();
        $this->assertEquals(3, $totalusers, 'Only group members must be returned when group filtering is applied.');

// 'No groups' filtering.
        $manager = new course_enrolment_manager($PAGE, $this->course, null, 0, '', -1);
        $totalusers = $manager->get_total_users();
        $this->assertEquals(2, $totalusers, 'Only non-group members must be returned when \'no groups\' filtering is applied.');

// Active users filtering.
        $manager = new course_enrolment_manager($PAGE, $this->course, null, 0, '', 0, ENROL_USER_ACTIVE);
        $totalusers = $manager->get_total_users();
        $this->assertEquals(5, $totalusers, 'Only active users must be returned when active users filtering is applied.');

// Suspended users filtering.
        $manager = new course_enrolment_manager($PAGE, $this->course, null, 0, '', 0, ENROL_USER_SUSPENDED);
        $totalusers = $manager->get_total_users();
        $this->assertEquals(1, $totalusers, 'Only suspended users must be returned when suspended users filtering is applied.');
    }

/**
     * Verify get_users() returned number of users expected in every situation.
     */
    public function test_get_users() {
        global $PAGE;

$this->resetAfterTest();

// All users filtering.
        $manager = new course_enrolment_manager($PAGE, $this->course);
        $users = $manager->get_users('id');
        $this->assertCount(6, $users,  'All users must be returned when no filtering is applied.');
        $this->assertArrayHasKey($this->users['user0']->id, $users);
        $this->assertArrayHasKey($this->users['user1']->id, $users);
        $this->assertArrayHasKey($this->users['user21']->id, $users);
        $this->assertArrayHasKey($this->users['user22']->id, $users);
        $this->assertArrayHasKey($this->users['userall']->id, $users);
        $this->assertArrayHasKey($this->users['usertch']->id, $users);

// Student role filtering.
        $manager = new course_enrolment_manager($PAGE, $this->course, null, 5);
        $users = $manager->get_users('id');
        $this->assertCount(5, $users, 'Only students must be returned when student role filtering is applied.');
        $this->assertArrayHasKey($this->users['user0']->id, $users);
        $this->assertArrayHasKey($this->users['user1']->id, $users);
        $this->assertArrayHasKey($this->users['user21']->id, $users);
        $this->assertArrayHasKey($this->users['user22']->id, $users);
        $this->assertArrayHasKey($this->users['userall']->id, $users);

// Teacher role filtering.
        $manager = new course_enrolment_manager($PAGE, $this->course, null, 3);
        $users = $manager->get_users('id');
        $this->assertCount(1, $users, 'Only teacher must be returned when teacher role filtering is applied.');
        $this->assertArrayHasKey($this->users['usertch']->id, $users);

// Search user filtering.
        $manager = new course_enrolment_manager($PAGE, $this->course, null, 0, 'userall');
        $users = $manager->get_users('id');
        $this->assertCount(1, $users, 'Only searchable user must be returned when search filtering is applied.');
        $this->assertArrayHasKey($this->users['userall']->id, $users);

// Group 1 filtering.
        $manager = new course_enrolment_manager($PAGE, $this->course, null, 0, '', $this->groups['group1']->id);
        $users = $manager->get_users('id');
        $this->assertCount(2, $users, 'Only group members must be returned when group filtering is applied.');
        $this->assertArrayHasKey($this->users['user1']->id, $users);
        $this->assertArrayHasKey($this->users['userall']->id, $users);

// Group 2 filtering.
        $manager = new course_enrolment_manager($PAGE, $this->course, null, 0, '', $this->groups['group2']->id);
        $users = $manager->get_users('id');
        $this->assertCount(3, $users, 'Only group members must be returned when group filtering is applied.');
        $this->assertArrayHasKey($this->users['user21']->id, $users);
        $this->assertArrayHasKey($this->users['user22']->id, $users);
        $this->assertArrayHasKey($this->users['userall']->id, $users);

// 'No groups' filtering.
        $manager = new course_enrolment_manager($PAGE, $this->course, null, 0, '', -1);
        $users = $manager->get_users('id');
        $this->assertCount(2, $users, 'Only non-group members must be returned when \'no groups\' filtering is applied.');
        $this->assertArrayHasKey($this->users['user0']->id, $users);
        $this->assertArrayHasKey($this->users['usertch']->id, $users);

// Active users filtering.
        $manager = new course_enrolment_manager($PAGE, $this->course, null, 0, '', 0, ENROL_USER_ACTIVE);
        $users = $manager->get_users('id');
        $this->assertCount(5, $users, 'Only active users must be returned when active users filtering is applied.');
        $this->assertArrayHasKey($this->users['user0']->id, $users);
        $this->assertArrayHasKey($this->users['user1']->id, $users);
        $this->assertArrayHasKey($this->users['user21']->id, $users);
        $this->assertArrayHasKey($this->users['userall']->id, $users);
        $this->assertArrayHasKey($this->users['usertch']->id, $users);

// Suspended users filtering.
        $manager = new course_enrolment_manager($PAGE, $this->course, null, 0, '', 0, ENROL_USER_SUSPENDED);
        $users = $manager->get_users('id');
        $this->assertCount(1, $users, 'Only suspended users must be returned when suspended users filtering is applied.');
        $this->assertArrayHasKey($this->users['user22']->id, $users);
    }

/**
     * Sets up a custom profile field and the showuseridentity option, and creates a test user
     * with suitable values set.
     *
     * @return \stdClass Test user
     */
    protected function setup_for_user_identity_tests(): \stdClass {
        // Configure extra fields to include one normal user field and one profile field, and
        // set the values for a new test user.
        $generator = $this->getDataGenerator();
        $generator->create_custom_profile_field(['datatype' => 'text',
                'shortname' => 'researchtopic', 'name' => 'Research topic']);
        set_config('showuseridentity', 'email,department,profile_field_researchtopic');
        return $generator->create_user(
                ['username' => 'newuser', 'department' => 'Amphibian studies', 'email' => 'x@x.org',
                        'profile_field_researchtopic' => 'Frogs', 'imagealt' => 'Smart suit']);
    }

/**
     * Checks that the get_users function returns the correct user fields.
     */
    public function test_get_users_fields() {
        global $PAGE;

$this->resetAfterTest();
        $newuser = $this->setup_for_user_identity_tests();

// Enrol the user in test course.
        $this->getDataGenerator()->enrol_user($newuser->id, $this->course->id, 'student');

// Get all users and fish out the one we're interested in.
        $manager = new course_enrolment_manager($PAGE, $this->course);
        $users = $manager->get_users('id');
        $user = $users[$newuser->id];

// Should include core required fields...
        $this->assertEquals($newuser->id, $user->id);

// ...And the ones specified in showuseridentity (one of which is also needed for user pics).
        $this->assertEquals('Amphibian studies', $user->department);
        $this->assertEquals('Frogs', $user->profile_field_researchtopic);
        $this->assertEquals('x@x.org', $user->email);

// And the ones necessary for user pics.
        $this->assertEquals('Smart suit', $user->imagealt);

// But not some random other field like city.
        $this->assertObjectNotHasProperty('city', $user);
    }

/**
     * Checks that the get_other_users function returns the correct user fields.
     */
    public function test_get_other_users_fields() {
        global $PAGE, $DB;

$this->resetAfterTest();

// Configure extra fields to include one normal user field and one profile field, and
        // set the values for a new test user.
        $newuser = $this->setup_for_user_identity_tests();
        $context = \context_course::instance($this->course->id);
        role_assign($DB->get_field('role', 'id', ['shortname' => 'manager']), $newuser->id, $context->id);

// Get the 'other' (role but not enrolled) users and fish out the one we're interested in.
        $manager = new course_enrolment_manager($PAGE, $this->course);
        $users = array_values($manager->get_other_users('id'));
        $user = $users[0];

// Should include core required fields...
        $this->assertEquals($newuser->id, $user->id);

// And the ones necessary for user pics.
        $this->assertEquals('Smart suit', $user->imagealt);

// But not some random other field like city.
        $this->assertObjectNotHasProperty('city', $user);
    }

/**
     * Checks that the get_potential_users function returns the correct user fields.
     */
    public function test_get_potential_users_fields() {
        global $PAGE;

$this->resetAfterTest();

// Configure extra fields to include one normal user field and one profile field, and
        // set the values for a new test user.
        $newuser = $this->setup_for_user_identity_tests();

// Get the 'potential' (not enrolled) users and fish out the one we're interested in.
        $manager = new course_enrolment_manager($PAGE, $this->course);
        foreach (enrol_get_instances($this->course->id, true) as $enrolinstance) {
            if ($enrolinstance->enrol === 'manual') {
                $enrolid = $enrolinstance->id;
            }
        }
        $users = array_values($manager->get_potential_users($enrolid));
        $user = $users[0][$newuser->id];

// Should include core required fields...
        $this->assertEquals($newuser->id, $user->id);

// And the ones necessary for user pics.
        $this->assertEquals('Smart suit', $user->imagealt);

// But not some random other field like city.
        $this->assertObjectNotHasProperty('city', $user);
    }

/**
     * Test get_potential_users without returnexactcount param.
     *
     * @dataProvider search_users_provider
     *
     * @param int $perpage Number of users per page.
     * @param bool $returnexactcount Return the exact count or not.
     * @param int $expectedusers Expected number of users return.
     * @param int $expectedtotalusers Expected total of users in database.
     * @param bool $expectedmoreusers Expected for more users return or not.
     */
    public function test_get_potential_users($perpage, $returnexactcount, $expectedusers, $expectedtotalusers, $expectedmoreusers) {
        global $DB, $PAGE;
        $this->resetAfterTest();
        $this->setAdminUser();

$enrol = $DB->get_record('enrol', array('courseid' => $this->course->id, 'enrol' => 'manual'));
        $manager = new course_enrolment_manager($PAGE, $this->course);
        $users = $manager->get_potential_users($enrol->id,
                'testapiuser',
                true,
                0,
                $perpage,
                0,
                $returnexactcount);

$this->assertCount($expectedusers, $users['users']);
        $this->assertEquals($expectedmoreusers, $users['moreusers']);
        if ($returnexactcount) {
            $this->assertArrayHasKey('totalusers', $users);
            $this->assertEquals($expectedtotalusers, $users['totalusers']);
        } else {
            $this->assertArrayNotHasKey('totalusers', $users);
        }
    }

/**
     * Tests get_potential_users when the search term includes a custom field.
     */
    public function test_get_potential_users_search_fields() {
        global $PAGE;

$this->resetAfterTest();

// Configure extra fields to include one normal user field and one profile field, and
        // set the values for a new test user.
        $newuser = $this->setup_for_user_identity_tests();

// Set up the enrolment manager.
        $manager = new course_enrolment_manager($PAGE, $this->course);
        foreach (enrol_get_instances($this->course->id, true) as $enrolinstance) {
            if ($enrolinstance->enrol === 'manual') {
                $enrolid = $enrolinstance->id;
            }
        }

// Search for text included in a 'standard' (user table) identity field.
        $users = array_values($manager->get_potential_users($enrolid, 'Amphibian studies'));
        $this->assertEquals([$newuser->id], array_keys($users[0]));

// And for text included in a custom field.
        $users = array_values($manager->get_potential_users($enrolid, 'Frogs'));
        $this->assertEquals([$newuser->id], array_keys($users[0]));

// With partial matches.
        $users = array_values($manager->get_potential_users($enrolid, 'Amphibian'));
        $this->assertEquals([$newuser->id], array_keys($users[0]));
        $users = array_values($manager->get_potential_users($enrolid, 'Fro'));
        $this->assertEquals([$newuser->id], array_keys($users[0]));

// With partial in-the-middle matches.
        $users = array_values($manager->get_potential_users($enrolid, 'phibian'));
        $this->assertEquals([], array_keys($users[0]));
        $users = array_values($manager->get_potential_users($enrolid, 'rog'));
        $this->assertEquals([], array_keys($users[0]));
        $users = array_values($manager->get_potential_users($enrolid, 'phibian', true));
        $this->assertEquals([$newuser->id], array_keys($users[0]));
        $users = array_values($manager->get_potential_users($enrolid, 'rog', true));
        $this->assertEquals([$newuser->id], array_keys($users[0]));

// If the current user doesn't have access to identity fields then these searches won't work.
        $this->setUser($this->getDataGenerator()->create_user());
        $users = array_values($manager->get_potential_users($enrolid, 'Amphibian studies'));
        $this->assertEquals([], array_keys($users[0]));
        $users = array_values($manager->get_potential_users($enrolid, 'Frogs'));
        $this->assertEquals([], array_keys($users[0]));

// Search for username field (there is special handling for this one field).
        set_config('showuseridentity', 'username');
        $this->setAdminUser();
        $users = array_values($manager->get_potential_users($enrolid, 'newuse'));
        $this->assertEquals([$newuser->id], array_keys($users[0]));
    }

/**
     * Test search_other_users with returnexactcount param.
     *
     * @dataProvider search_users_provider
     *
     * @param int $perpage Number of users per page.
     * @param bool $returnexactcount Return the exact count or not.
     * @param int $expectedusers Expected number of users return.
     * @param int $expectedtotalusers Expected total of users in database.
     * @param bool $expectedmoreusers Expected for more users return or not.
     */
    public function test_search_other_users($perpage, $returnexactcount, $expectedusers, $expectedtotalusers, $expectedmoreusers) {
        global $PAGE;
        $this->resetAfterTest();
        $this->setAdminUser();

$manager = new course_enrolment_manager($PAGE, $this->course);
        $users = $manager->search_other_users(
                'testapiuser',
                true,
                0,
                $perpage,
                $returnexactcount);

/**
     * Test case for test_get_potential_users, test_search_other_users and test_search_users tests.
     *
     * @return array Dataset
     */
    public function search_users_provider() {
        return [
                [2, false, 2, 3, true],
                [5, false, 3, 3, false],
                [2, true, 2, 3, true],
                [5, true, 3, 3, false]
        ];
    }

/**
     * Test search_users function.
     *
     * @dataProvider search_users_provider
     *
     * @param int $perpage Number of users per page.
     * @param bool $returnexactcount Return the exact count or not.
     * @param int $expectedusers Expected number of users return.
     * @param int $expectedtotalusers Expected total of users in database.
     * @param bool $expectedmoreusers Expected for more users return or not.
     */
    public function test_search_users($perpage, $returnexactcount, $expectedusers, $expectedtotalusers, $expectedmoreusers) {
        global $PAGE;
        $this->resetAfterTest();

$this->getDataGenerator()->create_and_enrol($this->course, 'student', ['firstname' => 'sutest 1']);
        $this->getDataGenerator()->create_and_enrol($this->course, 'student', ['firstname' => 'sutest 2']);
        $this->getDataGenerator()->create_and_enrol($this->course, 'student', ['firstname' => 'sutest 3']);

$manager = new course_enrolment_manager($PAGE, $this->course);
        $users = $manager->search_users(
            'sutest',
            true,
            0,
            $perpage,
            $returnexactcount
        );

/**
     * Test that search_users observes course group mode restrictions correctly
     */
    public function test_search_users_course_groupmode(): void {
        global $DB, $PAGE;

$this->resetAfterTest();

// Create the forum.
        $record = new stdClass();
        $record->introformat = FORMAT_HTML;
        $record->course = $this->course->id;
        $forum = self::getDataGenerator()->create_module('forum', $record, ['groupmode' => SEPARATEGROUPS]);
        $contextid = $DB->get_field('context', 'id', ['instanceid' => $forum->cmid, 'contextlevel' => CONTEXT_MODULE]);

$teacher = $this->getDataGenerator()->create_and_enrol($this->course, 'teacher');
        $this->getDataGenerator()->create_group_member(['groupid' => $this->groups['group1']->id, 'userid' => $teacher->id]);
        $this->setUser($teacher);

$courseusers = (new course_enrolment_manager($PAGE, $this->course))->search_users('', false, 0, 25, true);
        $this->assertEqualsCanonicalizing([
            $teacher->username,
            $this->users['user0']->username,
            $this->users['user1']->username,
            $this->users['user21']->username,
            $this->users['user22']->username,
            $this->users['userall']->username,
            $this->users['usertch']->username,
        ], array_column($courseusers['users'], 'username'));
        $this->assertEquals(7, $courseusers['totalusers']);

// Switch course to separate groups and forum to no group.
        $this->course->groupmode = SEPARATEGROUPS;
        update_course($this->course);
        set_coursemodule_groupmode($forum->cmid, NOGROUPS);

$forumusers = (new course_enrolment_manager($PAGE, $this->course))->search_users('', false, 0, 25, true, $contextid);
        $this->assertEqualsCanonicalizing([
            $teacher->username,
            $this->users['user0']->username,
            $this->users['user1']->username,
            $this->users['user21']->username,
            $this->users['user22']->username,
            $this->users['userall']->username,
            $this->users['usertch']->username,
        ], array_column($forumusers['users'], 'username'));
        $this->assertEquals(7, $forumusers['totalusers']);

set_coursemodule_groupmode($forum->cmid, SEPARATEGROUPS);

// Allow teacher to access all groups.
        $roleid = $DB->get_field('role', 'id', ['shortname' => 'teacher']);
        assign_capability('moodle/site:accessallgroups', CAP_ALLOW, $roleid, context_course::instance($this->course->id)->id);

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