code: func (a *Assertions) HTTPSuccess(handler http.HandlerFunc, method string, url string, values url.Values, msgAndArgs ...interface{}) bool {
  	if h, ok := a.t.(tHelper); ok {
  		h.Helper()
  	}
  	return HTTPSuccess(a.t, handler, method, url, values, msgAndArgs...)
  }
docs: // HTTPSuccess asserts that a specified handler returns a success status code.
  //
  //  a.HTTPSuccess(myHandler, "POST", "http://www.google.com", nil)
  //
  // Returns whether the assertion was successful (true) or not (false).