<?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/>.

/**
 * Unit tests for mod/lesson/lib.php.
 *
 * @package    mod_lesson
 * @category   test
 * @copyright  2017 Jun Pataleta
 * @license    http://www.gnu.org/copyleft/gpl.html GNU Public License
 */

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

global $CFG;
require_once($CFG->dirroot . '/mod/lesson/lib.php');

/**
 * Unit tests for mod/lesson/lib.php.
 *
 * @copyright  2017 Jun Pataleta
 * @license    http://www.gnu.org/copyleft/gpl.html GNU Public License
 */
class mod_lesson_lib_testcase extends advanced_testcase {
    /**
     * Test for lesson_get_group_override_priorities().
     */
    public function test_lesson_get_group_override_priorities() {
        global $DB;
        $this->resetAfterTest();
        $this->setAdminUser();

        $dg = $this->getDataGenerator();
        $course = $dg->create_course();
        $lessonmodule = $this->getDataGenerator()->create_module('lesson', array('course' => $course->id));

        $this->assertNull(lesson_get_group_override_priorities($lessonmodule->id));

        $group1 = $this->getDataGenerator()->create_group(array('courseid' => $course->id));
        $group2 = $this->getDataGenerator()->create_group(array('courseid' => $course->id));

        $now = 100;
        $override1 = (object)[
            'lessonid' => $lessonmodule->id,
            'groupid' => $group1->id,
            'available' => $now,
            'deadline' => $now + 20
        ];
        $DB->insert_record('lesson_overrides', $override1);

        $override2 = (object)[
            'lessonid' => $lessonmodule->id,
            'groupid' => $group2->id,
            'available' => $now - 10,
            'deadline' => $now + 10
        ];
        $DB->insert_record('lesson_overrides', $override2);

        $priorities = lesson_get_group_override_priorities($lessonmodule->id);
        $this->assertNotEmpty($priorities);

        $openpriorities = $priorities['open'];
        // Override 2's time open has higher priority since it is sooner than override 1's.
        $this->assertEquals(1, $openpriorities[$override1->available]);
        $this->assertEquals(2, $openpriorities[$override2->available]);

        $closepriorities = $priorities['close'];
        // Override 1's time close has higher priority since it is later than override 2's.
        $this->assertEquals(2, $closepriorities[$override1->deadline]);
        $this->assertEquals(1, $closepriorities[$override2->deadline]);
    }
}