<?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 the convert helper.
 * @package    core_backup
>  *



<  * @category   phpunit



>  * @category   test


 * @copyright  2010 onwards Eloy Lafuente (stronk7) {@link http://stronk7.com}
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */


> namespace core_backup;
defined('MOODLE_INTERNAL') || die();
> 

> use backup;
// Include all the needed stuff
> use convert_helper;
global $CFG;
> 


require_once($CFG->dirroot . '/backup/util/helper/convert_helper.class.php');


< 
< /**
<  * Provides access to the protected methods we need to test
<  */
< class testable_convert_helper extends convert_helper {
< 
<     public static function choose_conversion_path($format, array $descriptions) {
<         return parent::choose_conversion_path($format, $descriptions);
<     }
< }
< 
< 


/**

<  * Defines the test methods



>  * Test the convert helper.
>  *
>  * @package    core_backup
>  * @category   test
>  * @copyright  2010 onwards Eloy Lafuente (stronk7) {@link http://stronk7.com}
>  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later


 */

< class backup_convert_helper_testcase extends basic_testcase {



> class converterhelper_test extends \basic_testcase {



    public function test_choose_conversion_path() {

        // no converters available
        $descriptions = array();
        $path = testable_convert_helper::choose_conversion_path(backup::FORMAT_MOODLE1, $descriptions);
        $this->assertEquals($path, array());

        // missing source and/or targets
        $descriptions = array(
            // some custom converter
            'exporter' => array(
                'from'  => backup::FORMAT_MOODLE1,
                'to'    => 'some_custom_format',
                'cost'  => 10,
            ),
            // another custom converter
            'converter' => array(
                'from'  => 'yet_another_crazy_custom_format',
                'to'    => backup::FORMAT_MOODLE,
                'cost'  => 10,
            ),
        );
        $path = testable_convert_helper::choose_conversion_path(backup::FORMAT_MOODLE1, $descriptions);
        $this->assertEquals($path, array());

        $path = testable_convert_helper::choose_conversion_path('some_other_custom_format', $descriptions);
        $this->assertEquals($path, array());

        // single step conversion
        $path = testable_convert_helper::choose_conversion_path('yet_another_crazy_custom_format', $descriptions);
        $this->assertEquals($path, array('converter'));

        // no conversion needed - this is supposed to be detected by the caller
        $path = testable_convert_helper::choose_conversion_path(backup::FORMAT_MOODLE, $descriptions);
        $this->assertEquals($path, array());

        // two alternatives
        $descriptions = array(
            // standard moodle 1.9 -> 2.x converter
            'moodle1' => array(
                'from'  => backup::FORMAT_MOODLE1,
                'to'    => backup::FORMAT_MOODLE,
                'cost'  => 10,
            ),
            // alternative moodle 1.9 -> 2.x converter
            'alternative' => array(
                'from'  => backup::FORMAT_MOODLE1,
                'to'    => backup::FORMAT_MOODLE,
                'cost'  => 8,
            )
        );
        $path = testable_convert_helper::choose_conversion_path(backup::FORMAT_MOODLE1, $descriptions);
        $this->assertEquals($path, array('alternative'));

        // complex case
        $descriptions = array(
            // standard moodle 1.9 -> 2.x converter
            'moodle1' => array(
                'from'  => backup::FORMAT_MOODLE1,
                'to'    => backup::FORMAT_MOODLE,
                'cost'  => 10,
            ),
            // alternative moodle 1.9 -> 2.x converter
            'alternative' => array(
                'from'  => backup::FORMAT_MOODLE1,
                'to'    => backup::FORMAT_MOODLE,
                'cost'  => 8,
            ),
            // custom converter from 1.9 -> custom 'CFv1' format
            'cc1' => array(
                'from'  => backup::FORMAT_MOODLE1,
                'to'    => 'CFv1',
                'cost'  => 2,
            ),
            // custom converter from custom 'CFv1' format -> moodle 2.0 format
            'cc2' => array(
                'from'  => 'CFv1',
                'to'    => backup::FORMAT_MOODLE,
                'cost'  => 5,
            ),
            // custom converter from CFv1 -> CFv2 format
            'cc3' => array(
                'from'  => 'CFv1',
                'to'    => 'CFv2',
                'cost'  => 2,
            ),
            // custom converter from CFv2 -> moodle 2.0 format
            'cc4' => array(
                'from'  => 'CFv2',
                'to'    => backup::FORMAT_MOODLE,
                'cost'  => 2,
            ),
        );

        // ask the helper to find the most effective way
        $path = testable_convert_helper::choose_conversion_path(backup::FORMAT_MOODLE1, $descriptions);
        $this->assertEquals($path, array('cc1', 'cc3', 'cc4'));

>     }
    }
> }
}
> 
> /**
>  * Provides access to the protected methods we need to test
>  */
> class testable_convert_helper extends convert_helper {
> 
>     public static function choose_conversion_path($format, array $descriptions) {
>         return parent::choose_conversion_path($format, $descriptions);