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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/>.

/**
 * Test for content bank contenttype class.
 *
 * @package    core_contentbank
 * @category   test
 * @copyright  2020 Amaia Anabitarte <amaia@moodle.com>
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

namespace core_contentbank;

use stdClass;
use context_system;
use contenttype_testable\contenttype as contenttype;

/**
     * Setup to ensure that fixtures are loaded.
     */
    public static function setupBeforeClass(): void {
        global $CFG;

require_once($CFG->dirroot . '/contentbank/tests/fixtures/testable_contenttype.php');
        require_once($CFG->dirroot . '/contentbank/tests/fixtures/testable_content.php');
    }

/**
     * Tests for behaviour of get_name().
     *
     * @covers ::get_name
     */
    public function test_get_name() {
        $this->resetAfterTest();

// Create content.
        $record = new stdClass();
        $record->name = 'Test content';
        $record->configdata = '';

$contenttype = new contenttype(context_system::instance());
        $content = $contenttype->create_content($record);
        $this->assertEquals($record->name, $content->get_name());
    }

/**
     * Data provider for test_set_name.
     *
     * @return  array
     */
    public function set_name_provider() {
        return [
            'Standard name' => ['New name', 'New name'],
            'Name with digits' => ['Today is 17/04/2017', 'Today is 17/04/2017'],
            'Name with symbols' => ['Follow us: @moodle', 'Follow us: @moodle'],
            'Name with tags' => ['This is <b>bold</b>', 'This is bold'],
            'Long name' => [str_repeat('a', 100), str_repeat('a', 100)],
            'Too long name' => [str_repeat('a', 300), str_repeat('a', 255)],
            'Empty name' => ['', 'Old name'],
            'Blanks only' => ['  ', 'Old name'],
        ];
    }

/**
     * Tests for 'set_name' behaviour.
     *
     * @dataProvider    set_name_provider
     * @param   string  $newname    The name to set
     * @param   string   $expected   The name result
     *
     * @covers ::set_name
     */
    public function test_set_name(string $newname, string $expected) {
        global $DB;

$this->resetAfterTest();
        $this->setAdminUser();

$oldname = "Old name";
        $context = context_system::instance();

// Create content.
        $record = new stdClass();
        $record->name = $oldname;

$contenttype = new contenttype($context);
        $content = $contenttype->create_content($record);
        $this->assertEquals($oldname, $content->get_name());

$content->set_name($newname);
        $this->assertEquals($expected, $content->get_name());

$record = $DB->get_record('contentbank_content', ['id' => $content->get_id()]);
        $this->assertEquals($expected, $record->name);
    }

/**
     * Tests for behaviour of get_content_type().
     *
     * @covers ::get_content_type
     */
    public function test_get_content_type() {
        $this->resetAfterTest();

// Create content.
        $record = new stdClass();
        $record->name = 'Test content';
        $record->configdata = '';

$contenttype = new contenttype(context_system::instance());
        $content = $contenttype->create_content($record);
        $this->assertEquals('contenttype_testable', $content->get_content_type());
    }

/**
     * Tests for 'configdata' behaviour.
     *
     * @covers ::set_configdata
     */
    public function test_configdata_changes() {
        $this->resetAfterTest();

$configdata = "{img: 'icon.svg'}";

// Create content.
        $record = new stdClass();
        $record->configdata = $configdata;

$contenttype = new contenttype(context_system::instance());
        $content = $contenttype->create_content($record);
        $this->assertEquals($configdata, $content->get_configdata());

$configdata = "{alt: 'Name'}";
        $content->set_configdata($configdata);
        $this->assertEquals($configdata, $content->get_configdata());
    }

/**
     * Tests for 'set_contextid' behaviour.
     *
     * @covers ::set_contextid
     */
    public function test_set_contextid() {
        $this->resetAfterTest();
        $this->setAdminUser();
        $context = context_system::instance();
        $course = $this->getDataGenerator()->create_course();
        $newcontext = \context_course::instance($course->id);

// Add some content to the content bank.
        $generator = $this->getDataGenerator()->get_plugin_generator('core_contentbank');
        $contents = $generator->generate_contentbank_data('contenttype_testable', 3, 0, $context);
        $content = reset($contents);

$oldcontextid = $content->get_contextid();

$file = $content->get_file();
        $this->assertEquals($oldcontextid, $file->get_contextid());
        $this->assertEquals($context->id, $oldcontextid);
        $this->assertNotEquals($newcontext->id, $oldcontextid);

$content->set_contextid($newcontext->id);
        $file = $content->get_file();

$this->assertEquals($newcontext->id, $content->get_contextid());
        $this->assertEquals($newcontext->id, $file->get_contextid());
    }

/**
     * Tests for set_visibility behaviour
     *
     * @covers ::set_visibility
     */
    public function test_set_visibility() {
        $this->resetAfterTest();
        $this->setAdminUser();
        $context = context_system::instance();
        $oldvisibility = content::VISIBILITY_PUBLIC;
        $newvisibility = content::VISIBILITY_UNLISTED;
        $illegalvisibility = -1;

$record = new stdClass();
        $record->visibility = $oldvisibility;
        $contenttype = new contenttype($context);
        $content = $contenttype->create_content($record);

$this->assertEquals($oldvisibility, $content->get_visibility());

$content->set_visibility($newvisibility);

$this->assertEquals($newvisibility, $content->get_visibility());

$content->set_visibility($illegalvisibility);

$this->assertEquals($newvisibility, $content->get_visibility());
    }

/**
     * Tests for 'import_file' behaviour when replacing a file.
     *
     * @covers ::import_file
     */
    public function test_import_file_replace(): void {
        global $USER;
        $this->resetAfterTest();
        $this->setAdminUser();
        $context = context_system::instance();

$originalfile = $content->get_file();

// Create a dummy file.
        $filerecord = array(
            'contextid' => $context->id,
            'component' => 'contentbank',
            'filearea' => 'draft',
            'itemid' => $content->get_id(),
            'filepath' => '/',
            'filename' => 'example.txt'
        );
        $fs = get_file_storage();
        $file = $fs->create_file_from_string($filerecord, 'Dummy content ');

$importedfile = $content->import_file($file);

$this->assertEquals($originalfile->get_filename(), $importedfile->get_filename());
        $this->assertEquals($originalfile->get_filearea(), $importedfile->get_filearea());
        $this->assertEquals($originalfile->get_filepath(), $importedfile->get_filepath());
        $this->assertEquals($originalfile->get_mimetype(), $importedfile->get_mimetype());

$this->assertEquals($file->get_userid(), $importedfile->get_userid());
        $this->assertEquals($file->get_contenthash(), $importedfile->get_contenthash());
    }

/**
     * Tests for 'import_file' behaviour when uploading a new file.
     *
     * @covers ::import_file
     */
    public function test_import_file_upload(): void {
        global $USER;
        $this->resetAfterTest();
        $this->setAdminUser();
        $context = context_system::instance();

$type = new contenttype($context);
        $record = (object)[
            'name' => 'content name',
            'usercreated' => $USER->id,
        ];
        $content = $type->create_content($record);

$importedfile = $content->import_file($file);

$this->assertEquals($file->get_filename(), $importedfile->get_filename());
        $this->assertEquals($file->get_userid(), $importedfile->get_userid());
        $this->assertEquals($file->get_mimetype(), $importedfile->get_mimetype());
        $this->assertEquals($file->get_contenthash(), $importedfile->get_contenthash());
        $this->assertEquals('public', $importedfile->get_filearea());
        $this->assertEquals('/', $importedfile->get_filepath());

$contentfile = $content->get_file($file);
        $this->assertEquals($importedfile->get_id(), $contentfile->get_id());
    }

/**
     * Tests for 'get_content_type_instance'
     *
     * @covers ::get_content_type_instance
     */
    public function test_get_content_type_instance(): void {
        global $USER;
        $this->resetAfterTest();
        $this->setAdminUser();
        $context = context_system::instance();

$contenttype = $content->get_content_type_instance();

$this->assertInstanceOf(get_class($type), $contenttype);
    }

/**
     * Tests for 'is_view_allowed'.
     *
     * @covers ::is_view_allowed
     */
    public function test_is_view_allowed() {
        $this->resetAfterTest();
        $this->setAdminUser();
        $context = context_system::instance();

$userauthor = $this->getDataGenerator()->create_user();
        $userother = $this->getDataGenerator()->create_user();

$contenttype = new contenttype($context);

$unlistedrecord = new stdClass();
        $unlistedrecord->visibility = content::VISIBILITY_UNLISTED;
        $unlistedrecord->usercreated = $userauthor->id;
        $unlistedcontent = $contenttype->create_content($unlistedrecord);

$publicrecord = new stdClass();
        $publicrecord->visibility = content::VISIBILITY_PUBLIC;
        $publicrecord->usercreated = $userauthor->id;
        $publiccontent = $contenttype->create_content($publicrecord);

$this->setUser($userother);
        $this->assertFalse($unlistedcontent->is_view_allowed());
        $this->assertTrue($publiccontent->is_view_allowed());

$this->setUser($userauthor);
        $this->assertTrue($unlistedcontent->is_view_allowed());
        $this->assertTrue($publiccontent->is_view_allowed());

$this->setAdminUser();
        $this->assertTrue($unlistedcontent->is_view_allowed());
        $this->assertTrue($publiccontent->is_view_allowed());
    }

/**
     * Tests for 'get_uses' behaviour.
     *
     * @covers ::get_uses
     */
    public function test_get_uses() {
        $this->resetAfterTest();
        $this->setAdminUser();
        $context = context_system::instance();

// Check content has no references for now.
        $this->assertCount(0, $content1->get_uses());

// Add a link to the previous content.
        $cbfile = $content1->get_file();
        $cbrecord = array(
            'contextid' => $cbfile->get_contextid(),
            'component' => $cbfile->get_component(),
            'filearea'  => $cbfile->get_filearea(),
            'itemid'    => $cbfile->get_itemid(),
            'filepath'  => $cbfile->get_filepath(),
            'filename'  => $cbfile->get_filename(),
        );
        $fs = get_file_storage();
        $ref = $fs->pack_reference($cbrecord);

$aliasrecord = new stdClass();
        $aliasrecord->contextid = $context->id;
        $aliasrecord->component = 'core';
        $aliasrecord->filearea = 'phpunit';
        $aliasrecord->filepath = '/foo/';
        $aliasrecord->filename = 'one.txt';
        $aliasrecord->itemid = 0;

$repos = \repository::get_instances(['type' => 'contentbank']);
        $cbrepo = reset($repos);
        $this->assertInstanceOf('repository', $cbrepo);

$alias = $fs->create_file_from_reference($aliasrecord, $cbrepo->id, $ref);

// Check content now has one reference (the previous alias).
        $contentuses1 = $content1->get_uses();
        $this->assertCount(1, $contentuses1);
        $reffile = reset($contentuses1);
        $this->assertEquals($alias, $reffile);

// Check a different content hasn't any reference.
        $content2 = array_shift($contents);
        $this->assertCount(0, $content2->get_uses());
    }
}

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