1 files changed, 121 insertions, 0 deletions
diff --git a/vendor/github.com/prometheus/client_golang/prometheus/http_test.go b/vendor/github.com/prometheus/client_golang/prometheus/http_test.go
new file mode 100644
index 000000000..ffe0418cf
--- /dev/null
+++ b/vendor/github.com/prometheus/client_golang/prometheus/http_test.go
@@ -0,0 +1,121 @@
+// Copyright 2014 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package prometheus
+
+import (
+	"net/http"
+	"net/http/httptest"
+	"testing"
+	"time"
+
+	dto "github.com/prometheus/client_model/go"
+)
+
+type respBody string
+
+func (b respBody) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	w.WriteHeader(http.StatusTeapot)
+	w.Write([]byte(b))
+}
+
+func TestInstrumentHandler(t *testing.T) {
+	defer func(n nower) {
+		now = n.(nower)
+	}(now)
+
+	instant := time.Now()
+	end := instant.Add(30 * time.Second)
+	now = nowSeries(instant, end)
+	respBody := respBody("Howdy there!")
+
+	hndlr := InstrumentHandler("test-handler", respBody)
+
+	opts := SummaryOpts{
+		Subsystem:   "http",
+		ConstLabels: Labels{"handler": "test-handler"},
+	}
+
+	reqCnt := MustRegisterOrGet(NewCounterVec(
+		CounterOpts{
+			Namespace:   opts.Namespace,
+			Subsystem:   opts.Subsystem,
+			Name:        "requests_total",
+			Help:        "Total number of HTTP requests made.",
+			ConstLabels: opts.ConstLabels,
+		},
+		instLabels,
+	)).(*CounterVec)
+
+	opts.Name = "request_duration_microseconds"
+	opts.Help = "The HTTP request latencies in microseconds."
+	reqDur := MustRegisterOrGet(NewSummary(opts)).(Summary)
+
+	opts.Name = "request_size_bytes"
+	opts.Help = "The HTTP request sizes in bytes."
+	MustRegisterOrGet(NewSummary(opts))
+
+	opts.Name = "response_size_bytes"
+	opts.Help = "The HTTP response sizes in bytes."
+	MustRegisterOrGet(NewSummary(opts))
+
+	reqCnt.Reset()
+
+	resp := httptest.NewRecorder()
+	req := &http.Request{
+		Method: "GET",
+	}
+
+	hndlr.ServeHTTP(resp, req)
+
+	if resp.Code != http.StatusTeapot {
+		t.Fatalf("expected status %d, got %d", http.StatusTeapot, resp.Code)
+	}
+	if string(resp.Body.Bytes()) != "Howdy there!" {
+		t.Fatalf("expected body %s, got %s", "Howdy there!", string(resp.Body.Bytes()))
+	}
+
+	out := &dto.Metric{}
+	reqDur.Write(out)
+	if want, got := "test-handler", out.Label[0].GetValue(); want != got {
+		t.Errorf("want label value %q in reqDur, got %q", want, got)
+	}
+	if want, got := uint64(1), out.Summary.GetSampleCount(); want != got {
+		t.Errorf("want sample count %d in reqDur, got %d", want, got)
+	}
+
+	out.Reset()
+	if want, got := 1, len(reqCnt.children); want != got {
+		t.Errorf("want %d children in reqCnt, got %d", want, got)
+	}
+	cnt, err := reqCnt.GetMetricWithLabelValues("get", "418")
+	if err != nil {
+		t.Fatal(err)
+	}
+	cnt.Write(out)
+	if want, got := "418", out.Label[0].GetValue(); want != got {
+		t.Errorf("want label value %q in reqCnt, got %q", want, got)
+	}
+	if want, got := "test-handler", out.Label[1].GetValue(); want != got {
+		t.Errorf("want label value %q in reqCnt, got %q", want, got)
+	}
+	if want, got := "get", out.Label[2].GetValue(); want != got {
+		t.Errorf("want label value %q in reqCnt, got %q", want, got)
+	}
+	if out.Counter == nil {
+		t.Fatal("expected non-nil counter in reqCnt")
+	}
+	if want, got := 1., out.Counter.GetValue(); want != got {
+		t.Errorf("want reqCnt of %f, got %f", want, got)
+	}
+}