6 "github.com/go-kit/kit/log"
7 "github.com/go-kit/kit/metrics/teststat"
10 func TestCounter(t *testing.T) {
11 prefix, name := "abc.", "def"
12 label, value := "label", "value" // ignored
13 regex := `^` + prefix + name + `:([0-9\.]+)\|c$`
14 s := New(prefix, log.NewNopLogger())
15 counter := s.NewCounter(name, 1.0).With(label, value)
16 valuef := teststat.SumLines(s, regex)
17 if err := teststat.TestCounter(counter, valuef); err != nil {
22 func TestCounterSampled(t *testing.T) {
23 // This will involve multiplying the observed sum by the inverse of the
24 // sample rate and checking against the expected value within some
29 func TestGauge(t *testing.T) {
30 prefix, name := "ghi.", "jkl"
31 label, value := "xyz", "abc" // ignored
32 regex := `^` + prefix + name + `:([0-9\.]+)\|g$`
33 s := New(prefix, log.NewNopLogger())
34 gauge := s.NewGauge(name).With(label, value)
35 valuef := teststat.LastLine(s, regex)
36 if err := teststat.TestGauge(gauge, valuef); err != nil {
41 // StatsD timings just emit all observations. So, we collect them into a generic
42 // histogram, and run the statistics test on that.
44 func TestTiming(t *testing.T) {
45 prefix, name := "statsd.", "timing_test"
46 label, value := "abc", "def" // ignored
47 regex := `^` + prefix + name + `:([0-9\.]+)\|ms$`
48 s := New(prefix, log.NewNopLogger())
49 timing := s.NewTiming(name, 1.0).With(label, value)
50 quantiles := teststat.Quantiles(s, regex, 50) // no |@0.X
51 if err := teststat.TestHistogram(timing, quantiles, 0.01); err != nil {
56 func TestTimingSampled(t *testing.T) {
57 prefix, name := "statsd.", "sampled_timing_test"
58 label, value := "foo", "bar" // ignored
59 regex := `^` + prefix + name + `:([0-9\.]+)\|ms\|@0\.01[0]*$`
60 s := New(prefix, log.NewNopLogger())
61 timing := s.NewTiming(name, 0.01).With(label, value)
62 quantiles := teststat.Quantiles(s, regex, 50)
63 if err := teststat.TestHistogram(timing, quantiles, 0.02); err != nil {