Proyectos de Subversion Moodle

<?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 classes for handling embedded media.

 *

 * @package media_videojs

 * @copyright 2016 Marina Glancy

 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later

 */

namespace media_videojs;

use core_media_manager;

use html_writer;

use media_videojs_plugin;

use moodle_url;

/**

 * Test script for media embedding.

 *

 * @package media_videojs

 * @copyright 2016 Marina Glancy

 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later

 */

final class player_test extends \advanced_testcase {

    /**

     * Pre-test setup. Preserves $CFG.

     */

    public function setUp(): void {

        parent::setUp();

        // Reset $CFG and $SERVER.

        $this->resetAfterTest();

        // Consistent initial setup: all players disabled.

        \core\plugininfo\media::set_enabled_plugins('videojs');

        // Pretend to be using Firefox browser (must support ogg for tests to work).

        \core_useragent::instance(true, 'Mozilla/5.0 (X11; Linux x86_64; rv:46.0) Gecko/20100101 Firefox/46.0 ');

    }

    /**

     * Test that plugin is returned as enabled media plugin.

     */

    public function test_is_installed(): void {

        $sortorder = \core\plugininfo\media::get_enabled_plugins();

        $this->assertEquals(['videojs' => 'videojs'], $sortorder);

    }

    /**

     * Test method get_supported_extensions()

     */

    public function test_supported_extensions(): void {

        $supportedextensions = array_merge(file_get_typegroup('extension', 'html_video'),

            file_get_typegroup('extension', 'html_audio'), file_get_typegroup('extension', 'media_source'));

        // Make sure that the list of extensions from the setting is filtered to HTML5 natively supported extensions.

        $player = new media_videojs_plugin();

        $this->assertTrue(in_array('.mp3', $player->get_supported_extensions()));

        $this->assertEmpty(array_diff($player->get_supported_extensions(), $supportedextensions));

        // Try to set the audioextensions to something non-native (.ra) and make sure it is not returned as supported.

        set_config('audioextensions', '.mp3,.wav,.ra', 'media_videojs');

        $player = new media_videojs_plugin();

        $this->assertNotEmpty($player->get_supported_extensions());

        $this->assertTrue(in_array('.mp3', $player->get_supported_extensions()));

        $this->assertFalse(in_array('.ra', $player->get_supported_extensions()));

        $this->assertEmpty(array_diff($player->get_supported_extensions(), $supportedextensions));

        // Check flash extensions are not returned as supported.

        set_config('videoextensions', '.flv,.f4v', 'media_videojs');

        $player = new media_videojs_plugin();

        $this->assertFalse(in_array('.flv', $player->get_supported_extensions()));

        $this->assertFalse(in_array('.f4v', $player->get_supported_extensions()));

    }

    /**

     * Test embedding without media filter (for example for displaying file resorce).

     */

    public function test_embed_url(): void {

        global $CFG;

        $url = new moodle_url('http://example.org/1.webm');

        $manager = core_media_manager::instance();

        $embedoptions = array(

            core_media_manager::OPTION_TRUSTED => true,

            core_media_manager::OPTION_BLOCK => true,

        );

        $this->assertTrue($manager->can_embed_url($url, $embedoptions));

        $content = $manager->embed_url($url, 'Test & file', 0, 0, $embedoptions);

        $this->assertMatchesRegularExpression('~mediaplugin_videojs~', $content);

        $this->assertMatchesRegularExpression('~</video>~', $content);

        $this->assertMatchesRegularExpression('~title="Test & file"~', $content);

        $this->assertMatchesRegularExpression('~style="max-width:' . $CFG->media_default_width . 'px;~', $content);

        // Repeat sending the specific size to the manager.

        $content = $manager->embed_url($url, 'New file', 123, 50, $embedoptions);

        $this->assertMatchesRegularExpression('~style="max-width:123px;~', $content);

        // Repeat without sending the size and with unchecked setting to limit the video size.

        set_config('limitsize', false, 'media_videojs');

        $manager = core_media_manager::instance();

        $content = $manager->embed_url($url, 'Test & file', 0, 0, $embedoptions);

        $this->assertDoesNotMatchRegularExpression('~style="max-width:~', $content);

    }

    /**

     * Test that mediaplugin filter replaces a link to the supported file with media tag.

     *

     * filter_mediaplugin is enabled by default.

     */

    public function test_embed_link(): void {

        global $CFG;

        $url = new moodle_url('http://example.org/some_filename.mp4');

        $text = html_writer::link($url, 'Watch this one');

        $content = format_text($text, FORMAT_HTML);

        $this->assertMatchesRegularExpression('~mediaplugin_videojs~', $content);

        $this->assertMatchesRegularExpression('~</video>~', $content);

        $this->assertMatchesRegularExpression('~title="Watch this one"~', $content);

        $this->assertDoesNotMatchRegularExpression('~<track\b~i', $content);

        $this->assertMatchesRegularExpression('~style="max-width:' . $CFG->media_default_width . 'px;~', $content);

    }

    /**

     * Test that only supported URLs are listed as sources but all URLs are present in links fallbacks.

     */

    public function test_fallback(): void {

        $urls = [

            new moodle_url('http://example.org/1.rv'), // Not supported.

            new moodle_url('http://example.org/2.webm'), // Supported.

            new moodle_url('http://example.org/3.ogv'), // Supported.

        ];

        $manager = core_media_manager::instance();

        $content = $manager->embed_alternatives($urls, '', 0, 0, []);

        $this->assertMatchesRegularExpression('~mediaplugin_videojs~', $content);

        $this->assertMatchesRegularExpression('~</video>~', $content);

        // Title is taken from the name of the first supported file.

        $this->assertMatchesRegularExpression('~title="2"~', $content);

        // Only supported files are in <source>'s.

        $this->assertDoesNotMatchRegularExpression('~<source src="http://example.org/1.rv"~', $content);

        $this->assertMatchesRegularExpression('~<source src="http://example.org/2.webm"~', $content);

        $this->assertMatchesRegularExpression('~<source src="http://example.org/3.ogv"~', $content);

        // Links to all files are included.

        $this->assertMatchesRegularExpression(

            '~<a class="mediafallbacklink" href="http://example.org/1.rv">1.rv</a>~', $content);

        $this->assertMatchesRegularExpression(

            '~<a class="mediafallbacklink" href="http://example.org/2.webm">2.webm</a>~', $content);

        $this->assertMatchesRegularExpression(

            '~<a class="mediafallbacklink" href="http://example.org/3.ogv">3.ogv</a>~', $content);

    }

    /**

     * Assert other players do not apply after videojs was applied.

     */

    public function test_prevent_other_players(): void {

        \core\plugininfo\media::set_enabled_plugins('videojs,html5video');

        $url = new moodle_url('http://example.org/some_filename.webm');

        $text = html_writer::link($url, 'Apply one player only');

        $content = format_text($text, FORMAT_HTML);

        $this->assertMatchesRegularExpression('~mediaplugin_videojs~', $content);

        $this->assertEquals(1, substr_count($content, '</video>'));

        $this->assertDoesNotMatchRegularExpression('~mediaplugin_html5video~', $content);

        $this->assertMatchesRegularExpression(

            '~<a class="mediafallbacklink" href="http://example.org/some_filename.webm">Apply one player only</a>~', $content);

    }

    /**

     * Test that mediaplugin filter adds player code on top of <video> tags.

     *

     * filter_mediaplugin is enabled by default.

     */

    public function test_embed_media(): void {

        global $CFG;

        $url = new moodle_url('http://example.org/some_filename.mp4');

        $trackurl = new moodle_url('http://example.org/some_filename.vtt');

        $text = '<video controls="true"><source src="'.$url.'"/><source src="somethinginvalid"/>' .

            '<track src="'.$trackurl.'">Unsupported text</video>';

        $content = format_text($text, FORMAT_HTML);

        $this->assertMatchesRegularExpression('~mediaplugin_videojs~', $content);

        $this->assertMatchesRegularExpression('~</video>~', $content);

        $this->assertMatchesRegularExpression('~title="some_filename.mp4"~', $content);

        $this->assertMatchesRegularExpression('~style="max-width:' . $CFG->media_default_width . 'px;~', $content);

        // Unsupported text and tracks are preserved.

        $this->assertMatchesRegularExpression('~Unsupported text~', $content);

        $this->assertMatchesRegularExpression('~<track\b~i', $content);

        // Invalid sources are removed.

        $this->assertDoesNotMatchRegularExpression('~somethinginvalid~i', $content);

        // Video with dimensions and source specified as src attribute without <source> tag.

        $text = '<video controls="true" width="123" height="35" src="'.$url.'">Unsupported text</video>';

        $content = format_text($text, FORMAT_HTML);

        $this->assertMatchesRegularExpression('~mediaplugin_videojs~', $content);

        $this->assertMatchesRegularExpression('~</video>~', $content);

        $this->assertMatchesRegularExpression('~<source\b~', $content);

        $this->assertMatchesRegularExpression('~style="max-width:123px;~', $content);

        $this->assertDoesNotMatchRegularExpression('~width="~', $content);

        $this->assertDoesNotMatchRegularExpression('~height="~', $content);

        // Audio tag.

        $url = new moodle_url('http://example.org/some_filename.mp3');

        $trackurl = new moodle_url('http://example.org/some_filename.vtt');

        $text = '<audio controls="true"><source src="'.$url.'"/><source src="somethinginvalid"/>' .

            '<track src="'.$trackurl.'">Unsupported text</audio>';

        $content = format_text($text, FORMAT_HTML);

        $this->assertMatchesRegularExpression('~mediaplugin_videojs~', $content);

        $this->assertDoesNotMatchRegularExpression('~</video>~', $content);

        $this->assertMatchesRegularExpression('~</audio>~', $content);

        $this->assertMatchesRegularExpression('~title="some_filename.mp3"~', $content);

        $this->assertMatchesRegularExpression('~style="max-width:' . $CFG->media_default_width . 'px;~', $content);

        // Unsupported text and tracks are preserved.

        $this->assertMatchesRegularExpression('~Unsupported text~', $content);

        $this->assertMatchesRegularExpression('~<track\b~i', $content);

        // Invalid sources are removed.

        $this->assertDoesNotMatchRegularExpression('~somethinginvalid~i', $content);

    }

    /**

     * Helper function for testing youtube videos embedding.

     *

     * @param string $t output of core_media_manager::embed_url.

     */

    protected function youtube_plugin_engaged($t) {

        $this->assertStringContainsString('mediaplugin_videojs', $t);

        $this->assertStringContainsString('data-setup-lazy="{"techOrder": ["youtube"]', $t);

    }

    /**

     * Test that VideoJS can embed youtube videos.

     */

    public function test_youtube(): void {

        set_config('youtube', 1, 'media_videojs');

        $manager = core_media_manager::instance();

        // Format: youtube.

        $url = new moodle_url('http://www.youtube.com/watch?v=vyrwMmsufJc');

        $t = $manager->embed_url($url);

        $this->youtube_plugin_engaged($t);

        $url = new moodle_url('http://www.youtube.com/v/vyrwMmsufJc');

        $t = $manager->embed_url($url);

        $this->youtube_plugin_engaged($t);

        // Format: youtube video within playlist - this will be played by video.js but without tracks selection.

        $url = new moodle_url('https://www.youtube.com/watch?v=dv2f_xfmbD8&index=4&list=PLxcO_MFWQBDcyn9xpbmx601YSDlDcTcr0');

        $t = $manager->embed_url($url);

        $this->youtube_plugin_engaged($t);

        $this->assertStringContainsString('list=PLxcO_MFWQBDcyn9xpbmx601YSDlDcTcr0', $t);

        // Format: youtube playlist - not supported.

        $url = new moodle_url('http://www.youtube.com/view_play_list?p=PL6E18E2927047B662');

        $t = $manager->embed_url($url);

        $this->assertStringNotContainsString('mediaplugin_videojs', $t);

        $url = new moodle_url('http://www.youtube.com/playlist?list=PL6E18E2927047B662');

        $t = $manager->embed_url($url);

        $this->assertStringNotContainsString('mediaplugin_videojs', $t);

        $url = new moodle_url('http://www.youtube.com/p/PL6E18E2927047B662');

        $t = $manager->embed_url($url);

        $this->assertStringNotContainsString('mediaplugin_videojs', $t);

    }

    /**

     * Data provider for {@see test_youtube_start_time}

     *

     * @return array

     */

    public static function youtube_start_time_provider(): array {

        return [

            ['https://www.youtube.com/watch?v=JNJMF1l3udM&t=1h11s', 3611],

            ['https://www.youtube.com/watch?v=dv2f_xfmbD8&index=4&list=PLxcO_MFWQBDcyn9xpbmx601YSDlDcTcr0&t=1m5s', 65],

            ['https://www.youtube.com/watch?v=JNJMF1l3udM&t=1h10m30s', 4230],

            ['https://www.youtube.com/watch?v=JNJMF1l3udM&t=3m', 180],

            ['https://www.youtube.com/watch?v=JNJMF1l3udM&t=43s', 43],

            ['https://www.youtube.com/watch?v=JNJMF1l3udM&t=1234', 1234],

            ['https://www.youtube.com/watch?v=JNJMF1l3udM&t=invalid', 0],

        ];

    }

    /**

     * Test Youtube video embedding with URL's containing start time interval

     *

     * @param string $url

     * @param int $expectedstart

     *

     * @dataProvider youtube_start_time_provider

     */

    public function test_youtube_start_time(string $url, int $expectedstart): void {

        set_config('youtube', 1, 'media_videojs');

        $embedcode = core_media_manager::instance()->embed_url(new moodle_url($url));

        $this->youtube_plugin_engaged($embedcode);

        $this->assertStringContainsString(""youtube": {"start": "{$expectedstart}"}", $embedcode);

    }

    /**

     * Helper function for testing flash videos embedding.

     *

     * @param string $t output of core_media_manager::embed_url.

     */

    protected function flash_plugin_engaged($t) {

        $this->assertStringContainsString('mediaplugin_videojs', $t);

        $this->assertStringContainsString('data-setup-lazy="{"techOrder": ["flash", "html5"]', $t);

    }

    /**

     * Test that VideoJS can not embed flash videos.

     */

    public function test_flash_behaviour(): void {

        $manager = core_media_manager::instance();

        $url = new moodle_url('http://example.org/some_filename.flv');

        $t = $manager->embed_url($url);

        $this->assertStringNotContainsString('mediaplugin_videojs', $t);

        $this->assertMatchesRegularExpression(

            '~<a class="mediafallbacklink" href="http://example.org/some_filename.flv">some_filename.flv</a>~', $t);

    }

    /**

     * Test that VideoJS can not embed RTMP streams.

     */

    public function test_rtmp_behaviour(): void {

        $manager = core_media_manager::instance();

        $url = new moodle_url('rtmp://example.com/fms&mp4:path/to/file.mp4');

        $t = $manager->embed_url($url);

        $this->assertStringNotContainsString('mediaplugin_videojs', $t);

        $this->assertMatchesRegularExpression(

            '~<a class="mediafallbacklink" href="rtmp://example.com/fms&mp4:path/to/file.mp4">file.mp4</a>~', $t);

    }

}