diff options
Diffstat (limited to 'vendor/github.com/prometheus/client_golang/prometheus/counter_test.go')
| -rw-r--r-- | vendor/github.com/prometheus/client_golang/prometheus/counter_test.go | 160 |
1 files changed, 157 insertions, 3 deletions
diff --git a/vendor/github.com/prometheus/client_golang/prometheus/counter_test.go b/vendor/github.com/prometheus/client_golang/prometheus/counter_test.go index 67391a23a..5062f51af 100644 --- a/vendor/github.com/prometheus/client_golang/prometheus/counter_test.go +++ b/vendor/github.com/prometheus/client_golang/prometheus/counter_test.go @@ -14,6 +14,7 @@ package prometheus import ( + "fmt" "math" "testing" @@ -27,13 +28,27 @@ func TestCounterAdd(t *testing.T) { ConstLabels: Labels{"a": "1", "b": "2"}, }).(*counter) counter.Inc() - if expected, got := 1., math.Float64frombits(counter.valBits); expected != got { + if expected, got := 0.0, math.Float64frombits(counter.valBits); expected != got { t.Errorf("Expected %f, got %f.", expected, got) } + if expected, got := uint64(1), counter.valInt; expected != got { + t.Errorf("Expected %d, got %d.", expected, got) + } counter.Add(42) - if expected, got := 43., math.Float64frombits(counter.valBits); expected != got { + if expected, got := 0.0, math.Float64frombits(counter.valBits); expected != got { t.Errorf("Expected %f, got %f.", expected, got) } + if expected, got := uint64(43), counter.valInt; expected != got { + t.Errorf("Expected %d, got %d.", expected, got) + } + + counter.Add(24.42) + if expected, got := 24.42, math.Float64frombits(counter.valBits); expected != got { + t.Errorf("Expected %f, got %f.", expected, got) + } + if expected, got := uint64(43), counter.valInt; expected != got { + t.Errorf("Expected %d, got %d.", expected, got) + } if expected, got := "counter cannot decrease in value", decreaseCounter(counter).Error(); expected != got { t.Errorf("Expected error %q, got %q.", expected, got) @@ -42,7 +57,7 @@ func TestCounterAdd(t *testing.T) { m := &dto.Metric{} counter.Write(m) - if expected, got := `label:<name:"a" value:"1" > label:<name:"b" value:"2" > counter:<value:43 > `, m.String(); expected != got { + if expected, got := `label:<name:"a" value:"1" > label:<name:"b" value:"2" > counter:<value:67.42 > `, m.String(); expected != got { t.Errorf("expected %q, got %q", expected, got) } } @@ -56,3 +71,142 @@ func decreaseCounter(c *counter) (err error) { c.Add(-1) return nil } + +func TestCounterVecGetMetricWithInvalidLabelValues(t *testing.T) { + testCases := []struct { + desc string + labels Labels + }{ + { + desc: "non utf8 label value", + labels: Labels{"a": "\xFF"}, + }, + { + desc: "not enough label values", + labels: Labels{}, + }, + { + desc: "too many label values", + labels: Labels{"a": "1", "b": "2"}, + }, + } + + for _, test := range testCases { + counterVec := NewCounterVec(CounterOpts{ + Name: "test", + }, []string{"a"}) + + labelValues := make([]string, len(test.labels)) + for _, val := range test.labels { + labelValues = append(labelValues, val) + } + + expectPanic(t, func() { + counterVec.WithLabelValues(labelValues...) + }, fmt.Sprintf("WithLabelValues: expected panic because: %s", test.desc)) + expectPanic(t, func() { + counterVec.With(test.labels) + }, fmt.Sprintf("WithLabelValues: expected panic because: %s", test.desc)) + + if _, err := counterVec.GetMetricWithLabelValues(labelValues...); err == nil { + t.Errorf("GetMetricWithLabelValues: expected error because: %s", test.desc) + } + if _, err := counterVec.GetMetricWith(test.labels); err == nil { + t.Errorf("GetMetricWith: expected error because: %s", test.desc) + } + } +} + +func expectPanic(t *testing.T, op func(), errorMsg string) { + defer func() { + if err := recover(); err == nil { + t.Error(errorMsg) + } + }() + + op() +} + +func TestCounterAddInf(t *testing.T) { + counter := NewCounter(CounterOpts{ + Name: "test", + Help: "test help", + }).(*counter) + + counter.Inc() + if expected, got := 0.0, math.Float64frombits(counter.valBits); expected != got { + t.Errorf("Expected %f, got %f.", expected, got) + } + if expected, got := uint64(1), counter.valInt; expected != got { + t.Errorf("Expected %d, got %d.", expected, got) + } + + counter.Add(math.Inf(1)) + if expected, got := math.Inf(1), math.Float64frombits(counter.valBits); expected != got { + t.Errorf("valBits expected %f, got %f.", expected, got) + } + if expected, got := uint64(1), counter.valInt; expected != got { + t.Errorf("valInts expected %d, got %d.", expected, got) + } + + counter.Inc() + if expected, got := math.Inf(1), math.Float64frombits(counter.valBits); expected != got { + t.Errorf("Expected %f, got %f.", expected, got) + } + if expected, got := uint64(2), counter.valInt; expected != got { + t.Errorf("Expected %d, got %d.", expected, got) + } + + m := &dto.Metric{} + counter.Write(m) + + if expected, got := `counter:<value:inf > `, m.String(); expected != got { + t.Errorf("expected %q, got %q", expected, got) + } +} + +func TestCounterAddLarge(t *testing.T) { + counter := NewCounter(CounterOpts{ + Name: "test", + Help: "test help", + }).(*counter) + + // large overflows the underlying type and should therefore be stored in valBits. + large := float64(math.MaxUint64 + 1) + counter.Add(large) + if expected, got := large, math.Float64frombits(counter.valBits); expected != got { + t.Errorf("valBits expected %f, got %f.", expected, got) + } + if expected, got := uint64(0), counter.valInt; expected != got { + t.Errorf("valInts expected %d, got %d.", expected, got) + } + + m := &dto.Metric{} + counter.Write(m) + + if expected, got := fmt.Sprintf("counter:<value:%0.16e > ", large), m.String(); expected != got { + t.Errorf("expected %q, got %q", expected, got) + } +} + +func TestCounterAddSmall(t *testing.T) { + counter := NewCounter(CounterOpts{ + Name: "test", + Help: "test help", + }).(*counter) + small := 0.000000000001 + counter.Add(small) + if expected, got := small, math.Float64frombits(counter.valBits); expected != got { + t.Errorf("valBits expected %f, got %f.", expected, got) + } + if expected, got := uint64(0), counter.valInt; expected != got { + t.Errorf("valInts expected %d, got %d.", expected, got) + } + + m := &dto.Metric{} + counter.Write(m) + + if expected, got := fmt.Sprintf("counter:<value:%0.0e > ", small), m.String(); expected != got { + t.Errorf("expected %q, got %q", expected, got) + } +} |