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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/>.

/**
 * Unit tests for localization support in lib/moodlelib.php
 *
 * @package     core
 * @category    phpunit
 * @copyright   2013 David Mudrak <david@moodle.com>
 * @license     http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

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

global $CFG;
require_once($CFG->libdir.'/moodlelib.php');

/**
 * Tests for the API of the string_manager.
 *
 * @copyright 2013 David Mudrak <david@moodle.com>
 * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */
class core_string_manager_standard_testcase extends advanced_testcase {

public function test_string_manager_instance() {
        $this->resetAfterTest();

$otherroot = __DIR__.'/fixtures/langtest';
        $stringman = testable_core_string_manager::instance($otherroot);
        $this->assertInstanceOf('core_string_manager', $stringman);
    }

public function test_get_language_dependencies() {
        $this->resetAfterTest();

$otherroot = __DIR__.'/fixtures/langtest';
        $stringman = testable_core_string_manager::instance($otherroot);

// There is no parent language for 'en'.
        $this->assertSame(array(), $stringman->get_language_dependencies('en'));
        // Language with no parent language declared.
        $this->assertSame(array('aa'), $stringman->get_language_dependencies('aa'));
        // Language with parent language explicitly set to English (en < de).
        $this->assertSame(array('de'), $stringman->get_language_dependencies('de'));
        // Language dependency hierarchy (de < de_du < de_kids).
        $this->assertSame(array('de', 'de_du', 'de_kids'), $stringman->get_language_dependencies('de_kids'));
        // Language with the parent language misconfigured to itself (sd < sd).
        $this->assertSame(array('sd'), $stringman->get_language_dependencies('sd'));
        // Language with circular dependency (cda < cdb < cdc < cda).
        $this->assertSame(array('cda', 'cdb', 'cdc'), $stringman->get_language_dependencies('cdc'));
        // Orphaned language (N/A < bb).
        $this->assertSame(array('bb'), $stringman->get_language_dependencies('bb'));
        // Descendant of an orphaned language (N/A < bb < bc).
        $this->assertSame(array('bb', 'bc'), $stringman->get_language_dependencies('bc'));
    }

public function test_deprecated_strings() {
        $stringman = get_string_manager();

// Check non-deprecated string.
        $this->assertFalse($stringman->string_deprecated('hidden', 'grades'));

// Check deprecated string.
        $this->assertTrue($stringman->string_deprecated('groupextendenrol', 'core'));
        $this->assertTrue($stringman->string_exists('groupextendenrol', 'core'));
        $this->assertDebuggingNotCalled();
        $this->assertEquals('Extend enrolment (common)', get_string('groupextendenrol', 'core'));
        $this->assertDebuggingCalled('String [groupextendenrol,core] is deprecated. '.
            'Either you should no longer be using that string, or the string has been incorrectly deprecated, in which case you should report this as a bug. '.
            'Please refer to https://docs.moodle.org/dev/String_deprecation');
    }

/**
     * Return all deprecated strings.
     *
     * @return array
     */
    public function get_deprecated_strings_provider() {
        global $CFG;

$teststringman = testable_core_string_manager::instance($CFG->langotherroot, $CFG->langlocalroot, array());
        $allstrings = $teststringman->get_all_deprecated_strings();
        return array_map(function($string) {
            return [$string];
        }, $allstrings);
    }

/**
     * This test is a built-in validation of deprecated.txt files in lang locations.
     *
     * It will fail if the string in the wrong format or non-existing (mistyped) string was deprecated.
     *
     * @dataProvider get_deprecated_strings_provider
     * @param   string      $string     The string to be tested
     */
    public function test_validate_deprecated_strings_files($string) {
        $stringman = get_string_manager();

$result = preg_match('/^(.*),(.*)$/', $string, $matches);
        $this->assertEquals(1, $result);
        $this->assertCount(3, $matches);
        $this->assertEquals($matches[2], clean_param($matches[2], PARAM_COMPONENT),
            "Component name {$string} appearing in one of the lang/en/deprecated.txt files does not have correct syntax");

list($pluginttype, $pluginname) = core_component::normalize_component($matches[2]);
        $normcomponent = $pluginname ? ($pluginttype . '_' . $pluginname) : $pluginttype;
        $this->assertEquals($normcomponent, $matches[2],
            'String "'.$string.'" appearing in one of the lang/en/deprecated.txt files does not have normalised component name');

$this->assertTrue($stringman->string_exists($matches[1], $matches[2]),
            "String {$string} appearing in one of the lang/en/deprecated.txt files does not exist");
    }

/**
     * Test for $CFG->langlist (without installation of additional languages)
     */
    public function test_get_list_of_translations() {
        $this->resetAfterTest();
        $stringman = get_string_manager();

$this->assertEquals(['en' => 'English ‎(en)‎'], $stringman->get_list_of_translations());

set_config('langlist', 'en|En');
        get_string_manager(true);
        $stringman = get_string_manager();

$this->assertEquals(['en' => 'En'], $stringman->get_list_of_translations());

set_config('langlist', '');
        get_string_manager(true);
    }
}

/**
 * Helper class providing testable string_manager
 *
 * @copyright 2013 David Mudrak <david@moodle.com>
 * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */
class testable_core_string_manager extends core_string_manager_standard {

/**
     * Factory method
     *
     * @param string $otherroot full path to the location of installed upstream language packs
     * @param string $localroot full path to the location of locally customized language packs, defaults to $otherroot
     * @param bool $usecache use application permanent cache
     * @param array $translist explicit list of visible translations
     * @param string $menucache the location of a file that caches the list of available translations
     * @return testable_core_string_manager
     */
    public static function instance($otherroot, $localroot = null, $usecache = false, array $translist = array(), $menucache = null) {
        global $CFG;

if (is_null($localroot)) {
            $localroot = $otherroot;
        }

if (is_null($menucache)) {
            $menucache = $CFG->cachedir.'/languages';
        }

return new testable_core_string_manager($otherroot, $localroot, $usecache, $translist, $menucache);
    }

public function get_all_deprecated_strings() {
        return array_flip($this->load_deprecated_strings());
    }
}