Codeception\TestCase\WPTestCase::go_to PHP Method

    function go_to($url)
    {
        // note: the WP and WP_Query classes like to silently fetch parameters
        // from all over the place (globals, GET, etc), which makes it tricky
        // to run them more than once without very carefully clearing everything
        $_GET = $_POST = array();
        foreach (array('query_string', 'id', 'postdata', 'authordata', 'day', 'currentmonth', 'page', 'pages', 'multipage', 'more', 'numpages', 'pagenow') as $v) {
            if (isset($GLOBALS[$v])) {
                unset($GLOBALS[$v]);
            }
        }
        $parts = parse_url($url);
        if (isset($parts['scheme'])) {
            $req = isset($parts['path']) ? $parts['path'] : '';
            if (isset($parts['query'])) {
                $req .= '?' . $parts['query'];
                // parse the url query vars into $_GET
                parse_str($parts['query'], $_GET);
            }
        } else {
            $req = $url;
        }
        if (!isset($parts['query'])) {
            $parts['query'] = '';
        }
        $_SERVER['REQUEST_URI'] = $req;
        unset($_SERVER['PATH_INFO']);
        $this->flush_cache();
        unset($GLOBALS['wp_query'], $GLOBALS['wp_the_query']);
        $GLOBALS['wp_the_query'] = new \WP_Query();
        $GLOBALS['wp_query'] = $GLOBALS['wp_the_query'];
        $public_query_vars = $GLOBALS['wp']->public_query_vars;
        $private_query_vars = $GLOBALS['wp']->private_query_vars;
        $GLOBALS['wp'] = new \WP();
        $GLOBALS['wp']->public_query_vars = $public_query_vars;
        $GLOBALS['wp']->private_query_vars = $private_query_vars;
        _cleanup_query_vars();
        $GLOBALS['wp']->main($parts['query']);
    }