MDL-37046 behat: Split in different classes

[moodle.git] / lib / behat / classes / behat_command.php

<?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/>.

/**
 * Behat command utils
 *
 * @package    core
 * @category   test
 * @copyright  2012 David Monllaó
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

require_once(__DIR__ . '/../../filestorage/file_exceptions.php');

/**
 * Behat command related utils
 *
 * @package    core
 * @category   test
 * @copyright  2013 David Monllaó
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */
class behat_command {

    /**
     * Ensures the behat dir exists in moodledata
     * @throws file_exception
     * @return string Full path
     */
    public static function get_behat_dir() {
        global $CFG;

        $behatdir = $CFG->dataroot . '/behat';

        if (!is_dir($behatdir)) {
            if (!mkdir($behatdir, $CFG->directorypermissions, true)) {
                throw new file_exception('storedfilecannotcreatefiledirs');
            }
        }

        if (!is_writable($behatdir)) {
            throw new file_exception('storedfilecannotcreatefiledirs');
        }

        return $behatdir;
    }

    /**
     * Returns the executable path
     * @return string
     */
    public final static function get_behat_command() {
        return 'vendor' . DIRECTORY_SEPARATOR . 'bin' . DIRECTORY_SEPARATOR . 'behat';
    }

    /**
     * Checks if behat is set up and working
     *
     * It checks behat dependencies have been installed and runs
     * the behat help command to ensure it works as expected
     *
     * @throw  Exception
     * @param  boolean $checkphp Extra check for the PHP version
     */
    public static function check_behat_setup($checkphp = false) {
        global $CFG;

        // We don't check the PHP version if $CFG->behat_switchcompletely has been enabled.
        if (empty($CFG->behat_switchcompletely) && $checkphp && version_compare(PHP_VERSION, '5.4.0', '<')) {
            throw new Exception(get_string('wrongphpversion', 'tool_behat'));
        }

        // Moodle setting.
        if (!self::are_behat_dependencies_installed()) {

            $msg = get_string('wrongbehatsetup', 'tool_behat');

            // With HTML.
            $docslink = 'http://docs.moodle.org/dev/Acceptance_testing#Installation';
            if (!CLI_SCRIPT) {
                $docslink = html_writer::tag('a', $docslink, array('href' => $docslink, 'target' => '_blank'));
            }
            $msg .= '. ' . get_string('moreinfoin', 'tool_behat') . ' ' . $docslink;
            notice($msg);
        }

        // Behat test command.
        $currentcwd = getcwd();
        chdir($CFG->dirroot);
        exec(self::get_behat_command() . ' --help', $output, $code);
        chdir($currentcwd);

        if ($code != 0) {
            notice(get_string('wrongbehatsetup', 'tool_behat'));
        }
    }

    /**
     * Has the site installed composer with --dev option
     * @return boolean
     */
    public static function are_behat_dependencies_installed() {
        if (!is_dir(__DIR__ . '/../../../vendor/behat')) {
            return false;
        }
        return true;
    }

}