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Current File : /var/www/html/formation/rating/tests/rating_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_rating;

use rating_manager;

defined('MOODLE_INTERNAL') || die();

// Include all the needed stuff.
global $CFG;
require_once($CFG->dirroot . '/rating/lib.php');


/**
 * Unit test case for all the rating/lib.php requiring DB mockup & manipulation
 *
 * @package    core_rating
 * @category   test
 * @copyright  2011 onwards Eloy Lafuente (stronk7) {@link http://stronk7.com}
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 * @covers     \rating
 */
final class rating_test extends \advanced_testcase {

    protected $syscontext;
    protected $neededcaps = array('view', 'viewall', 'viewany', 'rate');
    protected $originaldefaultfrontpageroleid;

    public function setUp(): void {
        global $CFG;
        parent::setUp();

        $this->resetAfterTest(true);

        $CFG->defaultfrontpageroleid = null;
    }

    /**
     * Test the current get_ratings method main sql
     */
    public function test_get_ratings_sql(): void {
        global $DB;

        // We load 3 items. Each is rated twice. For simplicity itemid == user id of the item owner.
        $ctxid = \context_system::instance()->id;
        $ratings = array(
            // User 1's items. Average == 2.
            array('contextid' => $ctxid,
                  'component' => 'mod_forum',
                  'ratingarea' => 'post',
                  'itemid' => 1,
                  'scaleid' => 10,
                  'rating' => 1,
                  'userid' => 2,
                  'timecreated' => 1,
                  'timemodified' => 1),

            array('contextid' => $ctxid,
                  'component' => 'mod_forum',
                  'ratingarea' => 'post',
                  'itemid' => 1,
                  'scaleid' => 10,
                  'rating' => 3,
                  'userid' => 3,
                  'timecreated' => 1,
                  'timemodified' => 1),

            // User 2's items. Average == 3.
            array('contextid' => $ctxid,
                  'component' => 'mod_forum',
                  'ratingarea' => 'post',
                  'itemid' => 2,
                  'scaleid' => 10,
                  'rating' => 1,
                  'userid' => 1,
                  'timecreated' => 1,
                  'timemodified' => 1),

            array('contextid' => $ctxid,
                  'component' => 'mod_forum',
                  'ratingarea' => 'post',
                  'itemid' => 2,
                  'scaleid' => 10,
                  'rating' => 4,
                  'userid' => 3,
                  'timecreated' => 1,
                  'timemodified' => 1),

            // User 3's items. Average == 4.
            array('contextid' => $ctxid,
                  'component' => 'mod_forum',
                  'ratingarea' => 'post',
                  'itemid' => 3,
                  'scaleid' => 10,
                  'rating' => 3,
                  'userid' => 1,
                  'timecreated' => 1,
                  'timemodified' => 1),

            array('contextid' => $ctxid,
                  'component' => 'mod_forum',
                  'ratingarea' => 'post',
                  'itemid' => 3,
                  'scaleid' => 10,
                  'rating' => 5,
                  'userid' => 2,
                  'timecreated' => 1,
                  'timemodified' => 1)
        );
        foreach ($ratings as $rating) {
            $DB->insert_record('rating', $rating);
        }

        // A post (item) by user 1 (rated above by user 2 and 3 with average = 2).
        $user1posts = array(
            (object)array('id' => 1, 'userid' => 1, 'message' => 'hello'));
        // A post (item) by user 2 (rated above by user 1 and 3 with average = 3).
        $user2posts = array(
            (object)array('id' => 2, 'userid' => 2, 'message' => 'world'));
        // A post (item) by user 3 (rated above by user 1 and 2 with average = 4).
        $user3posts = array(
            (object)array('id' => 3, 'userid' => 3, 'message' => 'moodle'));

        // Prepare the default options.
        $defaultoptions = array (
            'context'    => \context_system::instance(),
            'component'  => 'mod_forum',
            'ratingarea' => 'post',
            'scaleid'    => 10,
            'aggregate'  => RATING_AGGREGATE_AVERAGE);

        $rm = new mockup_rating_manager();

        // STEP 1: Retreive ratings using the current user.

        // Get results for user 1's item (expected average 1 + 3 / 2 = 2).
        $toptions = (object)array_merge($defaultoptions, array('items' => $user1posts));
        $result = $rm->get_ratings($toptions);
        $this->assertEquals(count($result), count($user1posts));
        $this->assertEquals($result[0]->id, $user1posts[0]->id);
        $this->assertEquals($result[0]->userid, $user1posts[0]->userid);
        $this->assertEquals($result[0]->message, $user1posts[0]->message);
        $this->assertEquals($result[0]->rating->count, 2);
        $this->assertEquals($result[0]->rating->aggregate, 2);
        // Note that $result[0]->rating->rating is somewhat random.
        // We didn't supply a user ID so $USER was used which will vary depending on who runs the tests.

        // Get results for items of user 2 (expected average 1 + 4 / 2 = 2.5).
        $toptions = (object)array_merge($defaultoptions, array('items' => $user2posts));
        $result = $rm->get_ratings($toptions);
        $this->assertEquals(count($result), count($user2posts));
        $this->assertEquals($result[0]->id, $user2posts[0]->id);
        $this->assertEquals($result[0]->userid, $user2posts[0]->userid);
        $this->assertEquals($result[0]->message, $user2posts[0]->message);
        $this->assertEquals($result[0]->rating->count, 2);
        $this->assertEquals($result[0]->rating->aggregate, 2.5);
        // Note that $result[0]->rating->rating is somewhat random.
        // We didn't supply a user ID so $USER was used which will vary depending on who runs the tests.

        // Get results for items of user 3 (expected average 3 + 5 / 2 = 4).
        $toptions = (object)array_merge($defaultoptions, array('items' => $user3posts));
        $result = $rm->get_ratings($toptions);
        $this->assertEquals(count($result), count($user3posts));
        $this->assertEquals($result[0]->id, $user3posts[0]->id);
        $this->assertEquals($result[0]->userid, $user3posts[0]->userid);
        $this->assertEquals($result[0]->message, $user3posts[0]->message);
        $this->assertEquals($result[0]->rating->count, 2);
        $this->assertEquals($result[0]->rating->aggregate, 4);
        // Note that $result[0]->rating->rating is somewhat random.
        // We didn't supply a user ID so $USER was used which will vary depending on who runs the tests.

        // Get results for items of user 1 & 2 together (expected averages are 2 and 2.5, as tested above).
        $posts = array_merge($user1posts, $user2posts);
        $toptions = (object)array_merge($defaultoptions, array('items' => $posts));
        $result = $rm->get_ratings($toptions);
        $this->assertEquals(count($result), count($posts));
        $this->assertEquals($result[0]->id, $posts[0]->id);
        $this->assertEquals($result[0]->userid, $posts[0]->userid);
        $this->assertEquals($result[0]->message, $posts[0]->message);
        $this->assertEquals($result[0]->rating->count, 2);
        $this->assertEquals($result[0]->rating->aggregate, 2);
        // Note that $result[0]->rating->rating is somewhat random.
        // We didn't supply a user ID so $USER was used which will vary depending on who runs the tests.

        $this->assertEquals($result[1]->id, $posts[1]->id);
        $this->assertEquals($result[1]->userid, $posts[1]->userid);
        $this->assertEquals($result[1]->message, $posts[1]->message);
        $this->assertEquals($result[1]->rating->count, 2);
        $this->assertEquals($result[1]->rating->aggregate, 2.5);
        // Note that $result[0]->rating->rating is somewhat random.
        // We didn't supply a user ID so $USER was used which will vary depending on who runs the tests.

        // STEP 2: Retrieve ratings by a specified user.
        //         We still expect complete aggregations and counts.

        // Get results for items of user 1 rated by user 2 (avg 2, rating 1).
        $toptions = (object)array_merge($defaultoptions, array('items' => $user1posts, 'userid' => 2));
        $result = $rm->get_ratings($toptions);
        $this->assertEquals(count($result), count($user1posts));
        $this->assertEquals($result[0]->id, $user1posts[0]->id);
        $this->assertEquals($result[0]->userid, $user1posts[0]->userid);
        $this->assertEquals($result[0]->message, $user1posts[0]->message);
        $this->assertEquals($result[0]->rating->count, 2);
        $this->assertEquals($result[0]->rating->aggregate, 2);
        $this->assertEquals($result[0]->rating->rating, 1); // User 2 rated user 1 "1".
        $this->assertEquals($result[0]->rating->userid, $toptions->userid); // Must be the passed userid.

        // Get results for items of user 1 rated by user 3.
        $toptions = (object)array_merge($defaultoptions, array('items' => $user1posts, 'userid' => 3));
        $result = $rm->get_ratings($toptions);
        $this->assertEquals(count($result), count($user1posts));
        $this->assertEquals($result[0]->id, $user1posts[0]->id);
        $this->assertEquals($result[0]->userid, $user1posts[0]->userid);
        $this->assertEquals($result[0]->message, $user1posts[0]->message);
        $this->assertEquals($result[0]->rating->count, 2);
        $this->assertEquals($result[0]->rating->aggregate, 2);
        $this->assertEquals($result[0]->rating->rating, 3); // User 3 rated user 1 "3".
        $this->assertEquals($result[0]->rating->userid, $toptions->userid); // Must be the passed userid.

        // Get results for items of user 1 & 2 together rated by user 3.
        $posts = array_merge($user1posts, $user2posts);
        $toptions = (object)array_merge($defaultoptions, array('items' => $posts, 'userid' => 3));
        $result = $rm->get_ratings($toptions);
        $this->assertEquals(count($result), count($posts));
        $this->assertEquals($result[0]->id, $posts[0]->id);
        $this->assertEquals($result[0]->userid, $posts[0]->userid);
        $this->assertEquals($result[0]->message, $posts[0]->message);
        $this->assertEquals($result[0]->rating->count, 2);
        $this->assertEquals($result[0]->rating->aggregate, 2);
        $this->assertEquals($result[0]->rating->rating, 3); // User 3 rated user 1 "3".
        $this->assertEquals($result[0]->rating->userid, $toptions->userid); // Must be the passed userid.

        $this->assertEquals($result[1]->id, $posts[1]->id);
        $this->assertEquals($result[1]->userid, $posts[1]->userid);
        $this->assertEquals($result[1]->message, $posts[1]->message);
        $this->assertEquals($result[1]->rating->count, 2);
        $this->assertEquals($result[1]->rating->aggregate, 2.5);
        $this->assertEquals($result[0]->rating->rating, 3); // User 3 rated user 2 "5".
        $this->assertEquals($result[1]->rating->userid, $toptions->userid); // Must be the passed userid.

        // STEP 3: Some special cases.

        // Get results for user 1's items (expected average 1 + 3 / 2 = 2).
        // Supplying a non-existent user id so no rating from that user should be found.
        $toptions = (object)array_merge($defaultoptions, array('items' => $user1posts));
        $toptions->userid = 123456; // Non-existent user.
        $result = $rm->get_ratings($toptions);
        $this->assertNull($result[0]->rating->userid);
        $this->assertNull($result[0]->rating->rating);
        $this->assertEquals($result[0]->rating->aggregate, 2); // Should still get the aggregate.

        // Get results for items of user 2 (expected average 1 + 4 / 2 = 2.5).
        // Supplying the user id of the user who owns the items so no rating should be found.
        $toptions = (object)array_merge($defaultoptions, array('items' => $user2posts));
        $toptions->userid = 2; // User 2 viewing the ratings of their own item.
        $result = $rm->get_ratings($toptions);
        // These should be null as the user is viewing their own item and thus cannot rate.
        $this->assertNull($result[0]->rating->userid);
        $this->assertNull($result[0]->rating->rating);
        $this->assertEquals($result[0]->rating->aggregate, 2.5); // Should still get the aggregate.
    }

    /**
     * Data provider for get_aggregate_string tests.
     *
     * @return array
     */
    public static function get_aggregate_string_provider(): array {
        return [
            'Non-numeric aggregate produces empty string' => [
                RATING_AGGREGATE_NONE,
                'string',
                null,
                ['Foo', 'Bar'],
                '',
            ],
            'Aggregate count produces empty string' => [
                RATING_AGGREGATE_COUNT,
                0,
                null,
                ['Foo', 'Bar'],
                '',
            ],
            'Numeric SUM with non-numeric scale produces returns original value' => [
                RATING_AGGREGATE_SUM,
                10,
                false,
                ['Foo', 'Bar'],
                '10',
            ],
            'Numeric SUM with non-numeric scale produces returns rounded value' => [
                RATING_AGGREGATE_SUM,
                10.45,
                false,
                ['Foo', 'Bar'],
                '10.5',
            ],
            'Numeric SUM with numeric scale produces returns rounded value' => [
                RATING_AGGREGATE_SUM,
                10.45,
                true,
                ['Foo', 'Bar'],
                '10.5',
            ],
            'Numeric AVERAGE with numeric scale produces returns rounded value' => [
                RATING_AGGREGATE_AVERAGE,
                10.45,
                true,
                ['Foo', 'Bar'],
                '10.5',
            ],
            'Numeric AVERAGE with non-numeric scale produces returns indexed value (0)' => [
                RATING_AGGREGATE_AVERAGE,
                0,
                false,
                ['Foo', 'Bar'],
                'Foo',
            ],
            'Numeric AVERAGE with non-numeric scale produces returns indexed value (1)' => [
                RATING_AGGREGATE_AVERAGE,
                1,
                false,
                ['Foo', 'Bar'],
                'Bar',
            ],
        ];
    }

    /**
     * Test the value returned by get_aggregate_string().
     *
     * @dataProvider get_aggregate_string_provider
     */
    public function test_get_aggregate_string($method, $aggregate, $isnumeric, $scaleitems, $expectation): void {
        $options = new \stdClass();
        $options->aggregate = $aggregate;
        $options->context = null;
        $options->component = null;
        $options->ratingarea = null;
        $options->itemid = null;
        $options->scaleid = null;
        $options->userid = null;

        $options->settings = new \stdClass();
        $options->settings->aggregationmethod = $method;
        $options->settings->scale = new \stdClass();
        $options->settings->scale->isnumeric = $isnumeric;
        $options->settings->scale->scaleitems = $scaleitems;

        $rating = new \rating($options);
        $this->assertEquals($expectation, $rating->get_aggregate_string());
    }
}

/**
 * rating_manager subclass for unit testing without requiring capabilities to be loaded
 */
class mockup_rating_manager extends rating_manager {

    /**
     * Overwrite get_plugin_permissions_array() so it always return granted perms for unit testing
     */
    public function get_plugin_permissions_array($contextid, $component, $ratingarea) {
        return array(
            'rate' => true,
            'view' => true,
            'viewany' => true,
            'viewall' => true);
    }

}

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