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package solomon
import (
"encoding/json"
"testing"
"time"
"github.com/stretchr/testify/assert"
"go.uber.org/atomic"
)
func TestHistogram_MarshalJSON(t *testing.T) {
h := &Histogram{
name: "myhistogram",
metricType: typeHistogram,
tags: map[string]string{"ololo": "trololo"},
bucketBounds: []float64{1, 2, 3},
bucketValues: []int64{1, 2, 1},
infValue: *atomic.NewInt64(2),
}
b, err := json.Marshal(h)
assert.NoError(t, err)
expected := []byte(`{"type":"HIST","labels":{"ololo":"trololo","sensor":"myhistogram"},"hist":{"bounds":[1,2,3],"buckets":[1,2,1],"inf":2}}`)
assert.Equal(t, expected, b)
}
func TestRatedHistogram_MarshalJSON(t *testing.T) {
h := &Histogram{
name: "myhistogram",
metricType: typeRatedHistogram,
tags: map[string]string{"ololo": "trololo"},
bucketBounds: []float64{1, 2, 3},
bucketValues: []int64{1, 2, 1},
infValue: *atomic.NewInt64(2),
}
b, err := json.Marshal(h)
assert.NoError(t, err)
expected := []byte(`{"type":"HIST_RATE","labels":{"ololo":"trololo","sensor":"myhistogram"},"hist":{"bounds":[1,2,3],"buckets":[1,2,1],"inf":2}}`)
assert.Equal(t, expected, b)
}
func TestNameTagHistogram_MarshalJSON(t *testing.T) {
h := &Histogram{
name: "myhistogram",
metricType: typeRatedHistogram,
tags: map[string]string{"ololo": "trololo"},
bucketBounds: []float64{1, 2, 3},
bucketValues: []int64{1, 2, 1},
infValue: *atomic.NewInt64(2),
useNameTag: true,
}
b, err := json.Marshal(h)
assert.NoError(t, err)
expected := []byte(`{"type":"HIST_RATE","labels":{"name":"myhistogram","ololo":"trololo"},"hist":{"bounds":[1,2,3],"buckets":[1,2,1],"inf":2}}`)
assert.Equal(t, expected, b)
}
func TestHistogram_RecordDuration(t *testing.T) {
h := &Histogram{
name: "myhistogram",
metricType: typeHistogram,
tags: map[string]string{"ololo": "trololo"},
bucketBounds: []float64{1, 2, 3},
bucketValues: make([]int64, 3),
}
h.RecordDuration(500 * time.Millisecond)
h.RecordDuration(1 * time.Second)
h.RecordDuration(1800 * time.Millisecond)
h.RecordDuration(3 * time.Second)
h.RecordDuration(1 * time.Hour)
expectedValues := []int64{2, 1, 1}
assert.Equal(t, expectedValues, h.bucketValues)
var expectedInfValue int64 = 1
assert.Equal(t, expectedInfValue, h.infValue.Load())
}
func TestHistogram_RecordValue(t *testing.T) {
h := &Histogram{
name: "myhistogram",
metricType: typeHistogram,
tags: map[string]string{"ololo": "trololo"},
bucketBounds: []float64{1, 2, 3},
bucketValues: make([]int64, 3),
}
h.RecordValue(0.5)
h.RecordValue(1)
h.RecordValue(1.8)
h.RecordValue(3)
h.RecordValue(60)
expectedValues := []int64{2, 1, 1}
assert.Equal(t, expectedValues, h.bucketValues)
var expectedInfValue int64 = 1
assert.Equal(t, expectedInfValue, h.infValue.Load())
}
func TestHistogram_Reset(t *testing.T) {
h := &Histogram{
name: "myhistogram",
metricType: typeHistogram,
tags: map[string]string{"ololo": "trololo"},
bucketBounds: []float64{1, 2, 3},
bucketValues: make([]int64, 3),
}
h.RecordValue(0.5)
h.RecordValue(1)
h.RecordValue(1.8)
h.RecordValue(3)
h.RecordValue(60)
assert.Equal(t, []int64{2, 1, 1}, h.bucketValues)
assert.Equal(t, int64(1), h.infValue.Load())
h.Reset()
assert.Equal(t, []int64{0, 0, 0}, h.bucketValues)
assert.Equal(t, int64(0), h.infValue.Load())
}
func TestHistogram_InitBucketValues(t *testing.T) {
h := &Histogram{
name: "myhistogram",
metricType: typeHistogram,
tags: map[string]string{"ololo": "trololo"},
bucketBounds: []float64{1, 2, 3},
bucketValues: make([]int64, 3),
}
valsToInit := []int64{1, 2, 3, 4}
h.InitBucketValues(valsToInit[:2])
assert.Equal(t, append(valsToInit[:2], 0), h.bucketValues)
assert.Equal(t, *atomic.NewInt64(0), h.infValue)
h.InitBucketValues(valsToInit[:3])
assert.Equal(t, valsToInit[:3], h.bucketValues)
assert.Equal(t, *atomic.NewInt64(0), h.infValue)
h.InitBucketValues(valsToInit)
assert.Equal(t, valsToInit[:3], h.bucketValues)
assert.Equal(t, *atomic.NewInt64(valsToInit[3]), h.infValue)
}
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