fails:CGI::HtmlExtension#img when passed no arguments returns an 'img'-element without an src-url or alt-text
fails:CGI::HtmlExtension#img when passed no arguments ignores a passed block
fails:CGI::HtmlExtension#img when passed src returns an 'img'-element with the passed src-url
fails:CGI::HtmlExtension#img when passed src ignores a passed block
fails:CGI::HtmlExtension#img when passed src, alt returns an 'img'-element with the passed src-url and the passed alt-text
fails:CGI::HtmlExtension#img when passed src, alt ignores a passed block
fails:CGI::HtmlExtension#img when passed src, alt, width returns an 'img'-element with the passed src-url, the passed alt-text and the passed width
fails:CGI::HtmlExtension#img when passed src, alt, width ignores a passed block
fails:CGI::HtmlExtension#img when passed src, alt, width, height returns an 'img'-element with the passed src-url, the passed alt-text, the passed width and the passed height
fails:CGI::HtmlExtension#img when passed src, alt, width, height ignores a passed block
fails:CGI::HtmlExtension#img when passed Hash returns an 'img'-element with the passed Hash as attributes
fails:CGI::HtmlExtension#img when passed Hash ignores a passed block
