const resBody = "some body"
	gotWroteReqEvent := make(chan struct{}, 500)
	cst := newClientServerTest(t, mode, HandlerFunc(func(w ResponseWriter, r *Request) {
		if r.Method == "GET" {
			// Do nothing for the second request.
			return
		}
		if _, err := io.ReadAll(r.Body); err != nil {
			t.Error(err)
		}
		if !noHooks {
			<-gotWroteReqEvent
		}
		io.WriteString(w, resBody)