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Copy pathgithub-proxy_test.go
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109 lines (87 loc) · 2.42 KB
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package main
import (
"context"
"io"
"net/http"
"net/http/httptest"
"strings"
"testing"
"time"
"github.com/cockroachdb/errors"
"github.com/prometheus/client_golang/prometheus"
)
func TestInstrumentHandler(t *testing.T) {
h := http.Handler(nil)
instrumentHandler(prometheus.DefaultRegisterer, h)
}
func TestGitHubProxy(t *testing.T) {
ch := make(chan struct{})
blocking := make(chan struct{})
p := &githubProxy{client: doerFunc(func(r *http.Request) (*http.Response, error) {
switch r.URL.Path {
case "/block":
select {
case <-ch:
default:
close(blocking)
<-ch
}
}
return &http.Response{
StatusCode: 200,
Header: make(http.Header),
Body: io.NopCloser(strings.NewReader("body")),
}, nil
})}
srv := httptest.NewServer(p)
t.Cleanup(srv.Close)
go func() {
req, _ := http.NewRequest("GET", srv.URL+"/block", nil)
req.Header.Add("Authorization", "user1")
http.DefaultClient.Do(req) // blocks
}()
t.Run("locked", func(t *testing.T) {
<-blocking
req, _ := http.NewRequest("GET", srv.URL+"/ok", nil)
req.Header.Add("Authorization", "user1")
ctx, cancel := context.WithTimeout(context.Background(), time.Second)
defer cancel()
_, err := http.DefaultClient.Do(req.WithContext(ctx))
if !errors.Is(err, context.DeadlineExceeded) {
t.Fatal(err)
}
})
t.Run("different user", func(t *testing.T) {
req, _ := http.NewRequest("GET", srv.URL+"/ok", nil)
// Different user request can go through
req.Header.Set("Authorization", "Bearer user2")
ctx, cancel := context.WithTimeout(context.Background(), time.Second)
defer cancel()
resp, err := http.DefaultClient.Do(req.WithContext(ctx))
if err != nil {
t.Fatal(err)
}
if resp.StatusCode != 200 {
t.Fatalf("want status code 200, got %v", resp.StatusCode)
}
})
t.Run("unlocked", func(t *testing.T) {
// Now the first user's request will finish, we can go through.
close(ch)
req, _ := http.NewRequest("GET", srv.URL+"/ok", nil)
req.Header.Set("Authorization", "Bearer user1")
ctx, cancel := context.WithTimeout(context.Background(), time.Second)
defer cancel()
resp, err := http.DefaultClient.Do(req.WithContext(ctx))
if err != nil {
t.Fatal(err)
}
if resp.StatusCode != 200 {
t.Fatalf("want status code 200, got %v", resp.StatusCode)
}
})
}
type doerFunc func(*http.Request) (*http.Response, error)
func (do doerFunc) Do(r *http.Request) (*http.Response, error) {
return do(r)
}