Function TestThrottleBacklog

middleware/throttle_test.go:17–56

(t *testing.T)

var testContent = []byte("Hello world!")

func TestThrottleBacklog(t *testing.T) {
	r := chi.NewRouter()

	r.Use(ThrottleBacklog(10, 50, time.Second*10))

	r.Get("/", func(w http.ResponseWriter, r *http.Request) {
		w.WriteHeader(http.StatusOK)
		time.Sleep(time.Second * 1) // Expensive operation.
		w.Write(testContent)
	})

	server := httptest.NewServer(r)
	defer server.Close()

	client := http.Client{
		Timeout: time.Second * 5, // Maximum waiting time.
	}

	var wg sync.WaitGroup

	// The throttler processes 10 consecutive requests, each one of those
	// requests lasts 1s. The maximum number of requests this can possible serve
	// before the clients time out (5s) is 40.
	for i := range 40 {
		wg.Add(1)
		go func(i int) {
			defer wg.Done()

			res, err := client.Get(server.URL)
			assertNoError(t, err)

			assertEqual(t, http.StatusOK, res.StatusCode)
			buf, err := io.ReadAll(res.Body)
			assertNoError(t, err)
			assertEqual(t, testContent, buf)
		}(i)
	}

	wg.Wait()
}

func TestThrottleClientTimeout(t *testing.T) {
	r := chi.NewRouter()