Function testToReader

prometheus/graphite/bridge_test.go:251–296

(t *testing.T, useTags bool)

}

func testToReader(t *testing.T, useTags bool) {
	cntVec := prometheus.NewCounterVec(
		prometheus.CounterOpts{
			Name:        "name",
			Help:        "docstring",
			ConstLabels: prometheus.Labels{"constname": "constvalue"},
		},
		[]string{"labelname"},
	)
	cntVec.WithLabelValues("val1").Inc()
	cntVec.WithLabelValues("val2").Inc()

	reg := prometheus.NewRegistry()
	reg.MustRegister(cntVec)

	var (
		want = `prefix.name.constname.constvalue.labelname.val1 1 1477043
prefix.name.constname.constvalue.labelname.val2 1 1477043
`
		wantTagged = `prefix.name;constname=constvalue;labelname=val1 1 1477043
prefix.name;constname=constvalue;labelname=val2 1 1477043
`
	)

	if useTags {
		want = wantTagged
	}

	mfs, err := reg.Gather()
	if err != nil {
		t.Fatalf("error: %v", err)
	}

	now := model.Time(1477043083)
	var buf bytes.Buffer
	err = writeMetrics(&buf, mfs, useTags, "prefix", now)
	if err != nil {
		t.Fatalf("error: %v", err)
	}

	got := buf.String()

	if err := checkLinesAreEqual(want, got, useTags); err != nil {
		t.Fatal(err.Error())
	}
}

func checkLinesAreEqual(w, g string, useTags bool) error {
	if useTags {