<?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_courseformat;

/**
 * Section delaegate tests.
 *
 * @package    core_course
 * @copyright  2023 Ferran Recio <ferran@moodle.com>
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 * @covers     \core_courseformat\sectiondelegate
 * @coversDefaultClass \core_courseformat\sectiondelegate
 */
class sectiondelegate_test extends \advanced_testcase {

    /**
     * Setup to ensure that fixtures are loaded.
     */
    public static function setUpBeforeClass(): void {
        global $CFG;
        require_once($CFG->libdir . '/tests/fixtures/sectiondelegatetest.php');
    }

    /**
     * Test that the instance method returns the correct class.
     * @covers ::instance
     */
    public function test_instance(): void {
        global $DB;
        $this->resetAfterTest();

        $course = $this->getDataGenerator()->create_course(['format' => 'topics', 'numsections' => 3]);

        // Section 2 has an existing delegate class.
        course_update_section(
            $course,
            $DB->get_record('course_sections', ['course' => $course->id, 'section' => 2]),
            [
                'component' => 'test_component',
                'itemid' => 1,
            ]
        );

        // Section 3 has a missing delegate class.
        course_update_section(
            $course,
            $DB->get_record('course_sections', ['course' => $course->id, 'section' => 3]),
            [
                'component' => 'missing_component',
                'itemid' => 1,
            ]
        );

        $modinfo = get_fast_modinfo($course->id);
        $sectioninfos = $modinfo->get_section_info_all();

        $this->assertNull(sectiondelegate::instance($sectioninfos[1]));
        $this->assertInstanceOf('\test_component\courseformat\sectiondelegate', sectiondelegate::instance($sectioninfos[2]));
        $this->assertNull(sectiondelegate::instance($sectioninfos[3]));
    }
}