1package httpsnoop
2
3import (
4	"net/http"
5	"net/http/httptest"
6	"testing"
7)
8
9func BenchmarkBaseline(b *testing.B) {
10	benchmark(b, false)
11}
12
13func BenchmarkCaptureMetrics(b *testing.B) {
14	benchmark(b, true)
15}
16
17func BenchmarkWrap(b *testing.B) {
18	b.StopTimer()
19	doneCh := make(chan struct{}, 1)
20	h := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
21		b.StartTimer()
22		for i := 0; i < b.N; i++ {
23			Wrap(w, Hooks{})
24		}
25		doneCh <- struct{}{}
26	})
27	s := httptest.NewServer(h)
28	defer s.Close()
29	if _, err := http.Get(s.URL); err != nil {
30		b.Fatal(err)
31	}
32	<-doneCh
33}
34
35func benchmark(b *testing.B, captureMetrics bool) {
36	b.StopTimer()
37	dummyH := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {})
38	h := dummyH
39	if captureMetrics {
40		h = http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
41			CaptureMetrics(dummyH, w, r)
42		})
43	}
44	s := httptest.NewServer(h)
45	defer s.Close()
46	b.StartTimer()
47	for i := 0; i < b.N; i++ {
48		_, err := http.Get(s.URL)
49		if err != nil {
50			b.Fatal(err)
51		}
52	}
53}
54