1 files changed, 152 insertions, 0 deletions
diff --git a/vendor/github.com/prometheus/client_golang/prometheus/timer_test.go b/vendor/github.com/prometheus/client_golang/prometheus/timer_test.go
new file mode 100644
index 000000000..294902068
--- /dev/null
+++ b/vendor/github.com/prometheus/client_golang/prometheus/timer_test.go
@@ -0,0 +1,152 @@
+// Copyright 2016 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 (
+	"testing"
+
+	dto "github.com/prometheus/client_model/go"
+)
+
+func TestTimerObserve(t *testing.T) {
+	var (
+		his   = NewHistogram(HistogramOpts{Name: "test_histogram"})
+		sum   = NewSummary(SummaryOpts{Name: "test_summary"})
+		gauge = NewGauge(GaugeOpts{Name: "test_gauge"})
+	)
+
+	func() {
+		hisTimer := NewTimer(his)
+		sumTimer := NewTimer(sum)
+		gaugeTimer := NewTimer(ObserverFunc(gauge.Set))
+		defer hisTimer.ObserveDuration()
+		defer sumTimer.ObserveDuration()
+		defer gaugeTimer.ObserveDuration()
+	}()
+
+	m := &dto.Metric{}
+	his.Write(m)
+	if want, got := uint64(1), m.GetHistogram().GetSampleCount(); want != got {
+		t.Errorf("want %d observations for histogram, got %d", want, got)
+	}
+	m.Reset()
+	sum.Write(m)
+	if want, got := uint64(1), m.GetSummary().GetSampleCount(); want != got {
+		t.Errorf("want %d observations for summary, got %d", want, got)
+	}
+	m.Reset()
+	gauge.Write(m)
+	if got := m.GetGauge().GetValue(); got <= 0 {
+		t.Errorf("want value > 0 for gauge, got %f", got)
+	}
+}
+
+func TestTimerEmpty(t *testing.T) {
+	emptyTimer := NewTimer(nil)
+	emptyTimer.ObserveDuration()
+	// Do nothing, just demonstrate it works without panic.
+}
+
+func TestTimerConditionalTiming(t *testing.T) {
+	var (
+		his = NewHistogram(HistogramOpts{
+			Name: "test_histogram",
+		})
+		timeMe = true
+		m      = &dto.Metric{}
+	)
+
+	timedFunc := func() {
+		timer := NewTimer(ObserverFunc(func(v float64) {
+			if timeMe {
+				his.Observe(v)
+			}
+		}))
+		defer timer.ObserveDuration()
+	}
+
+	timedFunc() // This will time.
+	his.Write(m)
+	if want, got := uint64(1), m.GetHistogram().GetSampleCount(); want != got {
+		t.Errorf("want %d observations for histogram, got %d", want, got)
+	}
+
+	timeMe = false
+	timedFunc() // This will not time again.
+	m.Reset()
+	his.Write(m)
+	if want, got := uint64(1), m.GetHistogram().GetSampleCount(); want != got {
+		t.Errorf("want %d observations for histogram, got %d", want, got)
+	}
+}
+
+func TestTimerByOutcome(t *testing.T) {
+	var (
+		his = NewHistogramVec(
+			HistogramOpts{Name: "test_histogram"},
+			[]string{"outcome"},
+		)
+		outcome = "foo"
+		m       = &dto.Metric{}
+	)
+
+	timedFunc := func() {
+		timer := NewTimer(ObserverFunc(func(v float64) {
+			his.WithLabelValues(outcome).Observe(v)
+		}))
+		defer timer.ObserveDuration()
+
+		if outcome == "foo" {
+			outcome = "bar"
+			return
+		}
+		outcome = "foo"
+	}
+
+	timedFunc()
+	his.WithLabelValues("foo").(Histogram).Write(m)
+	if want, got := uint64(0), m.GetHistogram().GetSampleCount(); want != got {
+		t.Errorf("want %d observations for 'foo' histogram, got %d", want, got)
+	}
+	m.Reset()
+	his.WithLabelValues("bar").(Histogram).Write(m)
+	if want, got := uint64(1), m.GetHistogram().GetSampleCount(); want != got {
+		t.Errorf("want %d observations for 'bar' histogram, got %d", want, got)
+	}
+
+	timedFunc()
+	m.Reset()
+	his.WithLabelValues("foo").(Histogram).Write(m)
+	if want, got := uint64(1), m.GetHistogram().GetSampleCount(); want != got {
+		t.Errorf("want %d observations for 'foo' histogram, got %d", want, got)
+	}
+	m.Reset()
+	his.WithLabelValues("bar").(Histogram).Write(m)
+	if want, got := uint64(1), m.GetHistogram().GetSampleCount(); want != got {
+		t.Errorf("want %d observations for 'bar' histogram, got %d", want, got)
+	}
+
+	timedFunc()
+	m.Reset()
+	his.WithLabelValues("foo").(Histogram).Write(m)
+	if want, got := uint64(1), m.GetHistogram().GetSampleCount(); want != got {
+		t.Errorf("want %d observations for 'foo' histogram, got %d", want, got)
+	}
+	m.Reset()
+	his.WithLabelValues("bar").(Histogram).Write(m)
+	if want, got := uint64(2), m.GetHistogram().GetSampleCount(); want != got {
+		t.Errorf("want %d observations for 'bar' histogram, got %d", want, got)
+	}
+
+}