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middleware_test.go
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middleware_test.go
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package chiprometheus
import (
"fmt"
"net/http"
"net/http/httptest"
"strings"
"testing"
"github.com/go-chi/chi"
"github.com/prometheus/client_golang/prometheus"
)
func Test_Logger(t *testing.T) {
recorder := httptest.NewRecorder()
n := chi.NewRouter()
m := NewMiddleware("test")
n.Use(m)
n.Handle("/metrics", prometheus.Handler())
n.Get(`/ok`, func(w http.ResponseWriter, r *http.Request) {
w.WriteHeader(http.StatusOK)
fmt.Fprintln(w, "ok")
})
n.Get(`/users/{firstName}`, func(w http.ResponseWriter, r *http.Request) {
w.WriteHeader(http.StatusOK)
fmt.Fprintln(w, "ok")
})
req1, err := http.NewRequest("GET", "http://localhost:3000/ok", nil)
if err != nil {
t.Error(err)
}
req2, err := http.NewRequest("GET", "http://localhost:3000/users/JoeBob", nil)
if err != nil {
t.Error(err)
}
req3, err := http.NewRequest("GET", "http://localhost:3000/users/Misty", nil)
if err != nil {
t.Error(err)
}
req4, err := http.NewRequest("GET", "http://localhost:3000/metrics", nil)
if err != nil {
t.Error(err)
}
n.ServeHTTP(recorder, req1)
n.ServeHTTP(recorder, req2)
n.ServeHTTP(recorder, req3)
n.ServeHTTP(recorder, req4)
body := recorder.Body.String()
if !strings.Contains(body, reqsName) {
t.Errorf("body does not contain request total entry '%s'", reqsName)
}
if !strings.Contains(body, latencyName) {
t.Errorf("body does not contain request duration entry '%s'", latencyName)
}
req1Count := `chi_request_duration_milliseconds_count{code="OK",method="GET",path="/ok",service="test"} 1`
req2Count := `chi_request_duration_milliseconds_count{code="OK",method="GET",path="/users/JoeBob",service="test"} 1`
req3Count := `chi_request_duration_milliseconds_count{code="OK",method="GET",path="/users/Misty",service="test"} 1`
if !strings.Contains(body, req1Count) {
t.Errorf("body does not contain req1 count summary '%s'", req1Count)
}
if !strings.Contains(body, req2Count) {
t.Errorf("body does not contain req1 count summary '%s'", req2Count)
}
if !strings.Contains(body, req3Count) {
t.Errorf("body does not contain req1 count summary '%s'", req3Count)
}
}
func Test_PatternLogger(t *testing.T) {
recorder := httptest.NewRecorder()
n := chi.NewRouter()
m := NewPatternMiddleware("patternOnlyTest")
n.Use(m)
n.Handle("/metrics", prometheus.Handler())
n.Get(`/ok`, func(w http.ResponseWriter, r *http.Request) {
w.WriteHeader(http.StatusOK)
fmt.Fprintln(w, "ok")
})
n.Get(`/users/{firstName}`, func(w http.ResponseWriter, r *http.Request) {
w.WriteHeader(http.StatusOK)
fmt.Fprintln(w, "ok")
})
req1, err := http.NewRequest("GET", "http://localhost:3000/ok", nil)
if err != nil {
t.Error(err)
}
req2, err := http.NewRequest("GET", "http://localhost:3000/users/JoeBob", nil)
if err != nil {
t.Error(err)
}
req3, err := http.NewRequest("GET", "http://localhost:3000/users/Misty", nil)
if err != nil {
t.Error(err)
}
req4, err := http.NewRequest("GET", "http://localhost:3000/metrics", nil)
if err != nil {
t.Error(err)
}
n.ServeHTTP(recorder, req1)
n.ServeHTTP(recorder, req2)
n.ServeHTTP(recorder, req3)
n.ServeHTTP(recorder, req4)
body := recorder.Body.String()
if !strings.Contains(body, patternReqsName) {
t.Errorf("body does not contain request total entry '%s'", patternReqsName)
}
if !strings.Contains(body, patternLatencyName) {
t.Errorf("body does not contain request duration entry '%s'", patternLatencyName)
}
req1Count := `chi_pattern_request_duration_milliseconds_count{code="OK",method="GET",path="/ok",service="patternOnlyTest"} 1`
joeBobCount := `chi_pattern_request_duration_milliseconds_count{code="OK",method="GET",path="/users/JoeBob",service="patternOnlyTest"} 1`
mistyCount := `chi_pattern_request_duration_milliseconds_count{code="OK",method="GET",path="/users/Misty",service="patternOnlyTest"} 1`
firstNamePatternCount := `chi_pattern_request_duration_milliseconds_count{code="OK",method="GET",path="/users/{firstName}",service="patternOnlyTest"} 2`
if !strings.Contains(body, req1Count) {
t.Errorf("body does not contain req1 count summary '%s'", req1Count)
}
if strings.Contains(body, joeBobCount) {
t.Errorf("body should not contain Joe Bob count summary '%s'", joeBobCount)
}
if strings.Contains(body, mistyCount) {
t.Errorf("body should not contain Misty count summary '%s'", mistyCount)
}
if !strings.Contains(body, firstNamePatternCount) {
t.Errorf("body does not contain first name pattern count summary '%s'", firstNamePatternCount)
}
}
func Test_MultipleLoggers(t *testing.T) {
recorder := httptest.NewRecorder()
n := chi.NewRouter()
mid := NewMiddleware("pathTest")
m := NewPatternMiddleware("patternTest")
n.Use(mid)
n.Use(m)
n.Handle("/metrics", prometheus.Handler())
n.Get(`/ok`, func(w http.ResponseWriter, r *http.Request) {
w.WriteHeader(http.StatusOK)
fmt.Fprintln(w, "ok")
})
n.Get(`/users/{firstName}`, func(w http.ResponseWriter, r *http.Request) {
w.WriteHeader(http.StatusOK)
fmt.Fprintln(w, "ok")
})
req1, err := http.NewRequest("GET", "http://localhost:3000/ok", nil)
if err != nil {
t.Error(err)
}
req2, err := http.NewRequest("GET", "http://localhost:3000/users/JoeBob", nil)
if err != nil {
t.Error(err)
}
req3, err := http.NewRequest("GET", "http://localhost:3000/users/Misty", nil)
if err != nil {
t.Error(err)
}
req4, err := http.NewRequest("GET", "http://localhost:3000/metrics", nil)
if err != nil {
t.Error(err)
}
n.ServeHTTP(recorder, req1)
n.ServeHTTP(recorder, req2)
n.ServeHTTP(recorder, req3)
n.ServeHTTP(recorder, req4)
body := recorder.Body.String()
if !strings.Contains(body, patternReqsName) {
t.Errorf("body does not contain request total entry '%s'", patternReqsName)
}
if !strings.Contains(body, patternLatencyName) {
t.Errorf("body does not contain request duration entry '%s'", patternLatencyName)
}
req1Count := `chi_pattern_request_duration_milliseconds_count{code="OK",method="GET",path="/ok",service="patternTest"} 1`
joeBobCount := `chi_request_duration_milliseconds_count{code="OK",method="GET",path="/users/JoeBob",service="pathTest"} 1`
mistyCount := `chi_request_duration_milliseconds_count{code="OK",method="GET",path="/users/Misty",service="pathTest"} 1`
firstNamePatternCount := `chi_pattern_request_duration_milliseconds_count{code="OK",method="GET",path="/users/{firstName}",service="patternTest"} 2`
if !strings.Contains(body, req1Count) {
t.Errorf("body does not contain req1 count summary '%s'", req1Count)
}
if !strings.Contains(body, joeBobCount) {
t.Errorf("body does not contain Joe Bob count summary '%s'", joeBobCount)
}
if !strings.Contains(body, mistyCount) {
t.Errorf("body does not contain Misty count summary '%s'", mistyCount)
}
if !strings.Contains(body, firstNamePatternCount) {
t.Errorf("body does not contain first name pattern count summary '%s'", firstNamePatternCount)
}
}