Example #1
0
func TestCounterBatchFunc(t *testing.T) {
	metrics.Reset()

	var a, b uint64

	metrics.Counter("whee").SetBatchFunc(
		"yay",
		func() {
			a, b = 1, 2
		},
		func() uint64 {
			return a
		},
	)

	metrics.Counter("woo").SetBatchFunc(
		"yay",
		func() {
			a, b = 1, 2
		},
		func() uint64 {
			return b
		},
	)

	counters, _ := metrics.Snapshot()
	if v, want := counters["whee"], uint64(1); v != want {
		t.Errorf("Counter was %v, but expected %v", v, want)
	}

	if v, want := counters["woo"], uint64(2); v != want {
		t.Errorf("Counter was %v, but expected %v", v, want)
	}
}
Example #2
0
func TestMemStats(t *testing.T) {
	counters, gauges := metrics.Snapshot()

	expectedCounters := []string{
		"Mem.NumGC",
		"Mem.PauseTotalNs",
	}

	expectedGauges := []string{
		"Mem.LastGC",
		"Mem.Alloc",
		"Mem.HeapObjects",
	}

	for _, name := range expectedCounters {
		if _, ok := counters[name]; !ok {
			t.Errorf("Missing counters %q", name)
		}
	}

	for _, name := range expectedGauges {
		if _, ok := gauges[name]; !ok {
			t.Errorf("Missing gauge %q", name)
		}
	}
}
Example #3
0
func TestGaugeValue(t *testing.T) {
	metrics.Reset()

	metrics.Gauge("whee").Set(-100)

	_, gauges := metrics.Snapshot()
	if v, want := gauges["whee"], int64(-100); v != want {
		t.Errorf("Gauge was %v, but expected %v", v, want)
	}
}
Example #4
0
func TestCounter(t *testing.T) {
	metrics.Reset()

	metrics.Counter("whee").Add()
	metrics.Counter("whee").AddN(10)

	counters, _ := metrics.Snapshot()
	if v, want := counters["whee"], uint64(11); v != want {
		t.Errorf("Counter was %v, but expected %v", v, want)
	}
}
Example #5
0
func TestCounterRemove(t *testing.T) {
	metrics.Reset()

	metrics.Counter("whee").Add()
	metrics.Counter("whee").Remove()

	counters, _ := metrics.Snapshot()
	if v, ok := counters["whee"]; ok {
		t.Errorf("Counter was %v, but expected nothing", v)
	}
}
Example #6
0
func TestHistogramRemove(t *testing.T) {
	metrics.Reset()

	h := metrics.NewHistogram("heyo", 1, 1000, 3)
	h.Remove()

	_, gauges := metrics.Snapshot()
	if v, ok := gauges["heyo.P50"]; ok {
		t.Errorf("Gauge was %v, but expected nothing", v)
	}
}
Example #7
0
func TestGaugeRemove(t *testing.T) {
	metrics.Reset()

	metrics.Gauge("whee").Set(1)
	metrics.Gauge("whee").Remove()

	_, gauges := metrics.Snapshot()
	if v, ok := gauges["whee"]; ok {
		t.Errorf("Gauge was %v, but expected nothing", v)
	}
}
Example #8
0
func TestCounterFunc(t *testing.T) {
	metrics.Reset()

	metrics.Counter("whee").SetFunc(func() uint64 {
		return 100
	})

	counters, _ := metrics.Snapshot()
	if v, want := counters["whee"], uint64(100); v != want {
		t.Errorf("Counter was %v, but expected %v", v, want)
	}
}
Example #9
0
func TestGoroutinesStats(t *testing.T) {
	_, gauges := metrics.Snapshot()

	expected := []string{
		"Goroutines.Num",
	}

	for _, name := range expected {
		if _, ok := gauges[name]; !ok {
			t.Errorf("Missing gauge %q", name)
		}
	}
}
Example #10
0
func TestFdStats(t *testing.T) {
	_, gauges := metrics.Snapshot()

	expected := []string{
		"FileDescriptors.Max",
		"FileDescriptors.Used",
	}

	for _, name := range expected {
		if _, ok := gauges[name]; !ok {
			t.Errorf("Missing gauge %q", name)
		}
	}
}
Example #11
0
func TestHistogram(t *testing.T) {
	metrics.Reset()

	h := metrics.NewHistogram("heyo", 1, 1000, 3)
	for i := 100; i > 0; i-- {
		for j := 0; j < i; j++ {
			h.RecordValue(int64(i))
		}
	}

	_, gauges := metrics.Snapshot()

	if v, want := gauges["heyo.P50"], int64(71); v != want {
		t.Errorf("P50 was %v, but expected %v", v, want)
	}

	if v, want := gauges["heyo.P75"], int64(87); v != want {
		t.Errorf("P75 was %v, but expected %v", v, want)
	}

	if v, want := gauges["heyo.P90"], int64(95); v != want {
		t.Errorf("P90 was %v, but expected %v", v, want)
	}

	if v, want := gauges["heyo.P95"], int64(98); v != want {
		t.Errorf("P95 was %v, but expected %v", v, want)
	}

	if v, want := gauges["heyo.P99"], int64(100); v != want {
		t.Errorf("P99 was %v, but expected %v", v, want)
	}

	if v, want := gauges["heyo.P999"], int64(100); v != want {
		t.Errorf("P999 was %v, but expected %v", v, want)
	}
}