}
			return b, nil
		}
		if err != nil {
			return b, err
		}
	}
}

func TestClient(t *testing.T) { run(t, testClient) }
func testClient(t *testing.T, mode testMode) {
	ts := newClientServerTest(t, mode, robotsTxtHandler).ts

	c := ts.Client()
	r, err := c.Get(ts.URL)
	var b []byte
	if err == nil {
		b, err = pedanticReadAll(r.Body)
		r.Body.Close()
	}
	if err != nil {
		t.Error(err)

	{r: "bytes=100-1000", code: StatusRequestedRangeNotSatisfiable},
}

func TestServeFile(t *testing.T) { run(t, testServeFile) }
func testServeFile(t *testing.T, mode testMode) {
	ts := newClientServerTest(t, mode, HandlerFunc(func(w ResponseWriter, r *Request) {
		ServeFile(w, r, "testdata/file")
	})).ts
	c := ts.Client()

	var err error

	file, err := os.ReadFile(testFile)
	if err != nil {