47 lines
1.2 KiB
Go
47 lines
1.2 KiB
Go
package middlewares
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import (
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"fmt"
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"net/http"
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"net/http/httptest"
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"strings"
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"testing"
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"github.com/codegangsta/negroni"
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"github.com/containous/traefik/types"
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"github.com/prometheus/client_golang/prometheus/promhttp"
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)
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func TestPrometheus(t *testing.T) {
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recorder := httptest.NewRecorder()
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n := negroni.New()
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metricsMiddlewareBackend := NewMetricsWrapper(NewPrometheus("test", &types.Prometheus{}))
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n.Use(metricsMiddlewareBackend)
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r := http.NewServeMux()
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r.Handle("/metrics", promhttp.Handler())
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r.HandleFunc(`/ok`, func(w http.ResponseWriter, r *http.Request) {
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w.WriteHeader(http.StatusOK)
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fmt.Fprintln(w, "ok")
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})
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n.UseHandler(r)
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req1, err := http.NewRequest("GET", "http://localhost:3000/ok", nil)
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if err != nil {
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t.Error(err)
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}
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req2, err := http.NewRequest("GET", "http://localhost:3000/metrics", nil)
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if err != nil {
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t.Error(err)
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}
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n.ServeHTTP(recorder, req1)
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n.ServeHTTP(recorder, req2)
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body := recorder.Body.String()
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if !strings.Contains(body, reqsName) {
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t.Errorf("body does not contain request total entry '%s'", reqsName)
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}
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if !strings.Contains(body, latencyName) {
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t.Errorf("body does not contain request duration entry '%s'", reqsName)
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}
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}
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