mirror of
https://github.com/caddyserver/caddy.git
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52 lines
1.4 KiB
Go
52 lines
1.4 KiB
Go
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package caddyhttp
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import (
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"errors"
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"net/http"
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"net/http/httptest"
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"testing"
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"github.com/prometheus/client_golang/prometheus/testutil"
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)
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func TestMetricsInstrumentedHandler(t *testing.T) {
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handlerErr := errors.New("oh noes")
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response := []byte("hello world!")
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h := HandlerFunc(func(w http.ResponseWriter, r *http.Request) error {
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if actual := testutil.ToFloat64(httpMetrics.requestInFlight); actual != 1.0 {
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t.Errorf("Not same: expected %#v, but got %#v", 1.0, actual)
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}
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if handlerErr == nil {
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w.Write(response)
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}
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return handlerErr
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})
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mh := middlewareHandlerFunc(func(w http.ResponseWriter, r *http.Request, h Handler) error {
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return h.ServeHTTP(w, r)
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})
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ih := newMetricsInstrumentedHandler("foo", "bar", mh)
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r := httptest.NewRequest("GET", "/", nil)
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w := httptest.NewRecorder()
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if actual := ih.ServeHTTP(w, r, h); actual != handlerErr {
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t.Errorf("Not same: expected %#v, but got %#v", handlerErr, actual)
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}
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if actual := testutil.ToFloat64(httpMetrics.requestInFlight); actual != 0.0 {
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t.Errorf("Not same: expected %#v, but got %#v", 0.0, actual)
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}
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handlerErr = nil
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if err := ih.ServeHTTP(w, r, h); err != nil {
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t.Errorf("Received unexpected error: %w", err)
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}
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}
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type middlewareHandlerFunc func(http.ResponseWriter, *http.Request, Handler) error
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func (f middlewareHandlerFunc) ServeHTTP(w http.ResponseWriter, r *http.Request, h Handler) error {
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return f(w, r, h)
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}
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