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path: root/metrics/timer_test.go
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-rw-r--r--metrics/timer_test.go101
1 files changed, 101 insertions, 0 deletions
diff --git a/metrics/timer_test.go b/metrics/timer_test.go
new file mode 100644
index 000000000..f85c9b803
--- /dev/null
+++ b/metrics/timer_test.go
@@ -0,0 +1,101 @@
+package metrics
+
+import (
+ "fmt"
+ "math"
+ "testing"
+ "time"
+)
+
+func BenchmarkTimer(b *testing.B) {
+ tm := NewTimer()
+ b.ResetTimer()
+ for i := 0; i < b.N; i++ {
+ tm.Update(1)
+ }
+}
+
+func TestGetOrRegisterTimer(t *testing.T) {
+ r := NewRegistry()
+ NewRegisteredTimer("foo", r).Update(47)
+ if tm := GetOrRegisterTimer("foo", r); 1 != tm.Count() {
+ t.Fatal(tm)
+ }
+}
+
+func TestTimerExtremes(t *testing.T) {
+ tm := NewTimer()
+ tm.Update(math.MaxInt64)
+ tm.Update(0)
+ if stdDev := tm.StdDev(); 4.611686018427388e+18 != stdDev {
+ t.Errorf("tm.StdDev(): 4.611686018427388e+18 != %v\n", stdDev)
+ }
+}
+
+func TestTimerStop(t *testing.T) {
+ l := len(arbiter.meters)
+ tm := NewTimer()
+ if len(arbiter.meters) != l+1 {
+ t.Errorf("arbiter.meters: %d != %d\n", l+1, len(arbiter.meters))
+ }
+ tm.Stop()
+ if len(arbiter.meters) != l {
+ t.Errorf("arbiter.meters: %d != %d\n", l, len(arbiter.meters))
+ }
+}
+
+func TestTimerFunc(t *testing.T) {
+ tm := NewTimer()
+ tm.Time(func() { time.Sleep(50e6) })
+ if max := tm.Max(); 45e6 > max || max > 55e6 {
+ t.Errorf("tm.Max(): 45e6 > %v || %v > 55e6\n", max, max)
+ }
+}
+
+func TestTimerZero(t *testing.T) {
+ tm := NewTimer()
+ if count := tm.Count(); 0 != count {
+ t.Errorf("tm.Count(): 0 != %v\n", count)
+ }
+ if min := tm.Min(); 0 != min {
+ t.Errorf("tm.Min(): 0 != %v\n", min)
+ }
+ if max := tm.Max(); 0 != max {
+ t.Errorf("tm.Max(): 0 != %v\n", max)
+ }
+ if mean := tm.Mean(); 0.0 != mean {
+ t.Errorf("tm.Mean(): 0.0 != %v\n", mean)
+ }
+ if stdDev := tm.StdDev(); 0.0 != stdDev {
+ t.Errorf("tm.StdDev(): 0.0 != %v\n", stdDev)
+ }
+ ps := tm.Percentiles([]float64{0.5, 0.75, 0.99})
+ if 0.0 != ps[0] {
+ t.Errorf("median: 0.0 != %v\n", ps[0])
+ }
+ if 0.0 != ps[1] {
+ t.Errorf("75th percentile: 0.0 != %v\n", ps[1])
+ }
+ if 0.0 != ps[2] {
+ t.Errorf("99th percentile: 0.0 != %v\n", ps[2])
+ }
+ if rate1 := tm.Rate1(); 0.0 != rate1 {
+ t.Errorf("tm.Rate1(): 0.0 != %v\n", rate1)
+ }
+ if rate5 := tm.Rate5(); 0.0 != rate5 {
+ t.Errorf("tm.Rate5(): 0.0 != %v\n", rate5)
+ }
+ if rate15 := tm.Rate15(); 0.0 != rate15 {
+ t.Errorf("tm.Rate15(): 0.0 != %v\n", rate15)
+ }
+ if rateMean := tm.RateMean(); 0.0 != rateMean {
+ t.Errorf("tm.RateMean(): 0.0 != %v\n", rateMean)
+ }
+}
+
+func ExampleGetOrRegisterTimer() {
+ m := "account.create.latency"
+ t := GetOrRegisterTimer(m, nil)
+ t.Update(47)
+ fmt.Println(t.Max()) // Output: 47
+}