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<?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/>.

/**
 * Course related unit tests
 *
 * @package    core_course
 * @copyright  2014 Marina Glancy
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

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

global $CFG;
require_once($CFG->dirroot . '/course/lib.php');
require_once($CFG->dirroot . '/course/tests/fixtures/format_theunittest.php');

class core_course_courseformat_testcase extends advanced_testcase {
    public function test_available_hook() {
        global $DB;
        $this->resetAfterTest();

// Generate a course with two sections (0 and 1) and two modules. Course format is set to 'theunittest'.
        $generator = $this->getDataGenerator();
        $course1 = $generator->create_course(array('format' => 'theunittest'));
        $this->assertEquals('theunittest', $course1->format);
        course_create_sections_if_missing($course1, array(0, 1));
        $assign0 = $generator->create_module('assign', array('course' => $course1, 'section' => 0));
        $assign1 = $generator->create_module('assign', array('course' => $course1, 'section' => 1));
        $assign2 = $generator->create_module('assign', array('course' => $course1, 'section' => 0, 'visible' => 0));

// Create a courseoverview role based on the student role.
        $roleattr = array('name' => 'courseoverview', 'shortname' => 'courseoverview', 'archetype' => 'student');
        $generator->create_role($roleattr);

// Create user student, editingteacher, teacher and courseoverview.
        $student = $generator->create_user();
        $teacher = $generator->create_user();
        $editingteacher = $generator->create_user();
        $courseoverviewuser = $generator->create_user();

// Enrol users into their roles.
        $roleids = $DB->get_records_menu('role', null, '', 'shortname, id');
        $generator->enrol_user($student->id, $course1->id, $roleids['student']);
        $generator->enrol_user($teacher->id, $course1->id, $roleids['teacher']);
        $generator->enrol_user($editingteacher->id, $course1->id, $roleids['editingteacher']);
        $generator->enrol_user($courseoverviewuser->id, $course1->id, $roleids['courseoverview']);

// Remove the ignoreavailabilityrestrictions from the teacher role.
        role_change_permission($roleids['teacher'], context_system::instance(0),
                'moodle/course:ignoreavailabilityrestrictions', CAP_PREVENT);

// Allow the courseoverview role to ingore available restriction.
        role_change_permission($roleids['courseoverview'], context_system::instance(0),
                'moodle/course:ignoreavailabilityrestrictions', CAP_ALLOW);

// Make sure that initially both sections and both modules are available and visible for a student.
        $modinfostudent = get_fast_modinfo($course1, $student->id);
        $this->assertTrue($modinfostudent->get_section_info(1)->available);
        $this->assertTrue($modinfostudent->get_cm($assign0->cmid)->available);
        $this->assertTrue($modinfostudent->get_cm($assign0->cmid)->uservisible);
        $this->assertTrue($modinfostudent->get_cm($assign1->cmid)->available);
        $this->assertTrue($modinfostudent->get_cm($assign1->cmid)->uservisible);
        $this->assertFalse($modinfostudent->get_cm($assign2->cmid)->uservisible);

// Set 'hideoddsections' for the course to 1.
        // Section1 and assign1 will be unavailable, uservisible will be false for student and true for teacher.
        $data = (object)array('id' => $course1->id, 'hideoddsections' => 1);
        course_get_format($course1)->update_course_format_options($data);
        $modinfostudent = get_fast_modinfo($course1, $student->id);
        $this->assertFalse($modinfostudent->get_section_info(1)->available);
        $this->assertEmpty($modinfostudent->get_section_info(1)->availableinfo);
        $this->assertFalse($modinfostudent->get_section_info(1)->uservisible);
        $this->assertTrue($modinfostudent->get_cm($assign0->cmid)->available);
        $this->assertTrue($modinfostudent->get_cm($assign0->cmid)->uservisible);
        $this->assertFalse($modinfostudent->get_cm($assign1->cmid)->available);
        $this->assertFalse($modinfostudent->get_cm($assign1->cmid)->uservisible);
        $this->assertFalse($modinfostudent->get_cm($assign2->cmid)->uservisible);

$modinfoteacher = get_fast_modinfo($course1, $teacher->id);
        $this->assertFalse($modinfoteacher->get_section_info(1)->available);
        $this->assertEmpty($modinfoteacher->get_section_info(1)->availableinfo);
        $this->assertFalse($modinfoteacher->get_section_info(1)->uservisible);
        $this->assertTrue($modinfoteacher->get_cm($assign0->cmid)->available);
        $this->assertTrue($modinfoteacher->get_cm($assign0->cmid)->uservisible);
        $this->assertFalse($modinfoteacher->get_cm($assign1->cmid)->available);
        $this->assertFalse($modinfoteacher->get_cm($assign1->cmid)->uservisible);
        $this->assertTrue($modinfoteacher->get_cm($assign2->cmid)->available);
        $this->assertTrue($modinfoteacher->get_cm($assign2->cmid)->uservisible);

$modinfoteacher = get_fast_modinfo($course1, $editingteacher->id);
        $this->assertFalse($modinfoteacher->get_section_info(1)->available);
        $this->assertEmpty($modinfoteacher->get_section_info(1)->availableinfo);
        $this->assertTrue($modinfoteacher->get_section_info(1)->uservisible);
        $this->assertTrue($modinfoteacher->get_cm($assign0->cmid)->available);
        $this->assertTrue($modinfoteacher->get_cm($assign0->cmid)->uservisible);
        $this->assertFalse($modinfoteacher->get_cm($assign1->cmid)->available);
        $this->assertTrue($modinfoteacher->get_cm($assign1->cmid)->uservisible);
        $this->assertTrue($modinfoteacher->get_cm($assign2->cmid)->uservisible);

$modinfocourseoverview = get_fast_modinfo($course1, $courseoverviewuser->id);
        $this->assertFalse($modinfocourseoverview->get_section_info(1)->available);
        $this->assertEmpty($modinfocourseoverview->get_section_info(1)->availableinfo);
        $this->assertTrue($modinfocourseoverview->get_section_info(1)->uservisible);
        $this->assertTrue($modinfocourseoverview->get_cm($assign0->cmid)->available);
        $this->assertTrue($modinfocourseoverview->get_cm($assign0->cmid)->uservisible);
        $this->assertFalse($modinfocourseoverview->get_cm($assign1->cmid)->available);
        $this->assertTrue($modinfocourseoverview->get_cm($assign1->cmid)->uservisible);
        $this->assertFalse($modinfocourseoverview->get_cm($assign2->cmid)->uservisible);

// Set 'hideoddsections' for the course to 2.
        // Section1 and assign1 will be unavailable, uservisible will be false for student and true for teacher.
        // Property availableinfo will be not empty.
        $data = (object)array('id' => $course1->id, 'hideoddsections' => 2);
        course_get_format($course1)->update_course_format_options($data);
        $modinfostudent = get_fast_modinfo($course1, $student->id);
        $this->assertFalse($modinfostudent->get_section_info(1)->available);
        $this->assertNotEmpty($modinfostudent->get_section_info(1)->availableinfo);
        $this->assertFalse($modinfostudent->get_section_info(1)->uservisible);
        $this->assertTrue($modinfostudent->get_cm($assign0->cmid)->available);
        $this->assertTrue($modinfostudent->get_cm($assign0->cmid)->uservisible);
        $this->assertFalse($modinfostudent->get_cm($assign1->cmid)->available);
        $this->assertFalse($modinfostudent->get_cm($assign1->cmid)->uservisible);

$modinfoteacher = get_fast_modinfo($course1, $editingteacher->id);
        $this->assertFalse($modinfoteacher->get_section_info(1)->available);
        $this->assertNotEmpty($modinfoteacher->get_section_info(1)->availableinfo);
        $this->assertTrue($modinfoteacher->get_section_info(1)->uservisible);
        $this->assertTrue($modinfoteacher->get_cm($assign0->cmid)->available);
        $this->assertTrue($modinfoteacher->get_cm($assign0->cmid)->uservisible);
        $this->assertFalse($modinfoteacher->get_cm($assign1->cmid)->available);
        $this->assertTrue($modinfoteacher->get_cm($assign1->cmid)->uservisible);
    }

/**
     * Test for supports_news() with a course format plugin that doesn't define 'news_items' in default blocks.
     */
    public function test_supports_news() {
        $this->resetAfterTest();
        $format = course_get_format((object)['format' => 'testformat']);
        $this->assertFalse($format->supports_news());
    }

/**
     * Test for supports_news() for old course format plugins that defines 'news_items' in default blocks.
     */
    public function test_supports_news_legacy() {
        $this->resetAfterTest();
        $format = course_get_format((object)['format' => 'testlegacy']);
        $this->assertTrue($format->supports_news());
    }

/**
     * Test for get_view_url() to ensure that the url is only given for the correct cases
     */
    public function test_get_view_url() {
        global $CFG;
        $this->resetAfterTest();

$linkcoursesections = $CFG->linkcoursesections;

// Generate a course with two sections (0 and 1) and two modules. Course format is set to 'testformat'.
        // This will allow us to test the default implementation of get_view_url.
        $generator = $this->getDataGenerator();
        $course1 = $generator->create_course(array('format' => 'testformat'));
        course_create_sections_if_missing($course1, array(0, 1));

$data = (object)['id' => $course1->id];
        $format = course_get_format($course1);
        $format->update_course_format_options($data);

// In page.
        $CFG->linkcoursesections = 0;
        $this->assertNotEmpty($format->get_view_url(null));
        $this->assertNotEmpty($format->get_view_url(0));
        $this->assertNotEmpty($format->get_view_url(1));
        $CFG->linkcoursesections = 1;
        $this->assertNotEmpty($format->get_view_url(null));
        $this->assertNotEmpty($format->get_view_url(0));
        $this->assertNotEmpty($format->get_view_url(1));

// Navigation.
        $CFG->linkcoursesections = 0;
        $this->assertNull($format->get_view_url(1, ['navigation' => 1]));
        $this->assertNull($format->get_view_url(0, ['navigation' => 1]));
        $CFG->linkcoursesections = 1;
        $this->assertNotEmpty($format->get_view_url(1, ['navigation' => 1]));
        $this->assertNotEmpty($format->get_view_url(0, ['navigation' => 1]));
    }
}

/**
 * Class format_testformat.
 *
 * A test class that simulates a course format that doesn't define 'news_items' in default blocks.
 *
 * @copyright 2016 Jun Pataleta <jun@moodle.com>
 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */
class format_testformat extends format_base {
    /**
     * Returns the list of blocks to be automatically added for the newly created course.
     *
     * @return array
     */
    public function get_default_blocks() {
        return [
            BLOCK_POS_RIGHT => [],
            BLOCK_POS_LEFT => []
        ];
    }
}

/**
 * Class format_testlegacy.
 *
 * A test class that simulates old course formats that define 'news_items' in default blocks.
 *
 * @copyright 2016 Jun Pataleta <jun@moodle.com>
 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */
class format_testlegacy extends format_base {
    /**
     * Returns the list of blocks to be automatically added for the newly created course.
     *
     * @return array
     */
    public function get_default_blocks() {
        return [
            BLOCK_POS_RIGHT => ['news_items'],
            BLOCK_POS_LEFT => []
        ];
    }
}