<?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 setuplib.php
 *
 * @package   core_phpunit
 * @copyright 2012 The Open University
 * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

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


/**
 * Unit tests for setuplib.php
 *
 * @copyright 2012 The Open University
 * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */
class core_setuplib_testcase extends basic_testcase {

    /**
     * Test get_docs_url_standard in the normal case when we should link to Moodle docs.
     */
    public function test_get_docs_url_standard() {
        global $CFG;
        if (empty($CFG->docroot)) {
            $docroot = 'http://docs.moodle.org/';
        } else {
            $docroot = $CFG->docroot;
        }
        $this->assertRegExp('~^' . preg_quote($docroot, '') . '/2\d/' . current_language() . '/course/editing$~',
                get_docs_url('course/editing'));
    }

    /**
     * Test get_docs_url_standard in the special case of an absolute HTTP URL.
     */
    public function test_get_docs_url_http() {
        $url = 'http://moodle.org/';
        $this->assertEquals($url, get_docs_url($url));
    }

    /**
     * Test get_docs_url_standard in the special case of an absolute HTTPS URL.
     */
    public function test_get_docs_url_https() {
        $url = 'https://moodle.org/';
        $this->assertEquals($url, get_docs_url($url));
    }

    /**
     * Test get_docs_url_standard in the special case of a link relative to wwwroot.
     */
    public function test_get_docs_url_wwwroot() {
        global $CFG;
        $this->assertEquals($CFG->wwwroot . '/lib/tests/setuplib_test.php',
                get_docs_url('%%WWWROOT%%/lib/tests/setuplib_test.php'));
    }

    public function test_is_web_crawler() {
        $browsers = array(
            'Mozilla/5.0 (Windows; U; MSIE 9.0; WIndows NT 9.0; en-US))',
            'Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:18.0) Gecko/18.0 Firefox/18.0',
            'Mozilla/5.0 (Macintosh; U; PPC Mac OS X; en) AppleWebKit/412 (KHTML, like Gecko) Safari/412',
            'Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_6_5; en-US) AppleWebKit/534.10 (KHTML, like Gecko) Chrome/8.0.552.215 Safari/534.10',
            'Opera/9.0 (Windows NT 5.1; U; en)',
            'Mozilla/5.0 (Linux; U; Android 2.1; en-us; Nexus One Build/ERD62) AppleWebKit/530.17 (KHTML, like Gecko) Version/4.0 Mobile Safari/530.17 –Nexus',
            'Mozilla/5.0 (iPad; U; CPU OS 4_2_1 like Mac OS X; en-us) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8C148 Safari/6533.18.5',
        );
        $crawlers = array(
            // Google
            'Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)',
            'Googlebot/2.1 (+http://www.googlebot.com/bot.html)',
            'Googlebot-Image/1.0',
            // Yahoo
            'Mozilla/5.0 (compatible; Yahoo! Slurp; http://help.yahoo.com/help/us/ysearch/slurp)',
            // Bing
            'Mozilla/5.0 (compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm)',
            'Mozilla/5.0 (compatible; bingbot/2.0 +http://www.bing.com/bingbot.htm)',
            // MSN
            'msnbot/2.1',
            // Yandex
            'Mozilla/5.0 (compatible; YandexBot/3.0; +http://yandex.com/bots)',
            'Mozilla/5.0 (compatible; YandexImages/3.0; +http://yandex.com/bots)',
            // AltaVista
            'AltaVista V2.0B crawler@evreka.com',
            // ZoomSpider
            'ZoomSpider - wrensoft.com [ZSEBOT]',
            // Baidu
            'Baiduspider+(+http://www.baidu.com/search/spider_jp.html)',
            'Baiduspider+(+http://www.baidu.com/search/spider.htm)',
            'BaiDuSpider',
            // Ask.com
            'User-Agent: Mozilla/2.0 (compatible; Ask Jeeves/Teoma)',
        );

        foreach ($browsers as $agent) {
            $_SERVER['HTTP_USER_AGENT'] = $agent;
            $this->assertFalse(is_web_crawler());
        }
        foreach ($crawlers as $agent) {
            $_SERVER['HTTP_USER_AGENT'] = $agent;
            $this->assertTrue(is_web_crawler(), "$agent should be considered a search engine");
        }
    }

    /**
     * Test if get_exception_info() removes file system paths
     */
    public function test_exception_info_removes_serverpaths() {
        global $CFG;

        // This doesn't test them all possible ones, but these are set for unit tests.
        $cfgnames = array('dataroot', 'dirroot', 'tempdir', 'cachedir');

        $fixture  = '';
        $expected = '';
        foreach ($cfgnames as $cfgname) {
            if (!empty($CFG->$cfgname)) {
                $fixture  .= $CFG->$cfgname.' ';
                $expected .= "[$cfgname] ";
            }
        }
        $exception     = new moodle_exception('generalexceptionmessage', 'error', '', $fixture, $fixture);
        $exceptioninfo = get_exception_info($exception);

        $this->assertContains($expected, $exceptioninfo->message, 'Exception message does not contain system paths');
        $this->assertContains($expected, $exceptioninfo->debuginfo, 'Exception debug info does not contain system paths');
    }
}