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// Copyright (c) 2021 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package tally
import (
"math/rand"
"testing"
"time"
"github.com/stretchr/testify/assert"
)
type statsTestReporter struct {
last interface{}
valueSamples map[float64]int
durationSamples map[time.Duration]int
buckets Buckets
}
func newStatsTestReporter() *statsTestReporter {
return &statsTestReporter{
valueSamples: make(map[float64]int),
durationSamples: make(map[time.Duration]int),
}
}
func (r *statsTestReporter) ReportCounter(name string, tags map[string]string, value int64) {
r.last = value
}
func (r *statsTestReporter) ReportGauge(name string, tags map[string]string, value float64) {
r.last = value
}
func (r *statsTestReporter) ReportTimer(name string, tags map[string]string, interval time.Duration) {
r.last = interval
}
func (r *statsTestReporter) ReportHistogramValueSamples(
name string,
tags map[string]string,
buckets Buckets,
bucketLowerBound,
bucketUpperBound float64,
samples int64,
) {
r.valueSamples[bucketUpperBound] = int(samples)
r.buckets = buckets
}
func (r *statsTestReporter) ReportHistogramDurationSamples(
name string,
tags map[string]string,
buckets Buckets,
bucketLowerBound,
bucketUpperBound time.Duration,
samples int64,
) {
r.durationSamples[bucketUpperBound] = int(samples)
r.buckets = buckets
}
func (r *statsTestReporter) Capabilities() Capabilities {
return capabilitiesReportingNoTagging
}
func (r *statsTestReporter) Flush() {}
func TestCounter(t *testing.T) {
counter := newCounter(nil)
r := newStatsTestReporter()
counter.Inc(1)
counter.report("", nil, r)
assert.Equal(t, int64(1), r.last)
counter.Inc(1)
counter.report("", nil, r)
assert.Equal(t, int64(1), r.last)
counter.Inc(1)
counter.report("", nil, r)
assert.Equal(t, int64(1), r.last)
}
func TestGauge(t *testing.T) {
gauge := newGauge(nil)
r := newStatsTestReporter()
gauge.Update(42)
gauge.report("", nil, r)
assert.Equal(t, float64(42), r.last)
gauge.Update(1234)
gauge.Update(5678)
gauge.report("", nil, r)
assert.Equal(t, float64(5678), r.last)
}
func TestTimer(t *testing.T) {
r := newStatsTestReporter()
timer := newTimer("t1", nil, r, nil)
timer.Record(42 * time.Millisecond)
assert.Equal(t, 42*time.Millisecond, r.last)
timer.Record(128 * time.Millisecond)
assert.Equal(t, 128*time.Millisecond, r.last)
}
func TestHistogramValueSamples(t *testing.T) {
r := newStatsTestReporter()
buckets := MustMakeLinearValueBuckets(0, 10, 10)
storage := newBucketStorage(valueHistogramType, buckets)
h := newHistogram(valueHistogramType, "h1", nil, r, storage, nil)
var offset float64
for i := 0; i < 3; i++ {
h.RecordValue(offset + rand.Float64()*10)
}
offset = 50
for i := 0; i < 5; i++ {
h.RecordValue(offset + rand.Float64()*10)
}
h.report(h.name, h.tags, r)
assert.Equal(t, 3, r.valueSamples[10.0])
assert.Equal(t, 5, r.valueSamples[60.0])
assert.Equal(t, buckets, r.buckets)
}
func TestHistogramDurationSamples(t *testing.T) {
r := newStatsTestReporter()
buckets := MustMakeLinearDurationBuckets(0, 10*time.Millisecond, 10)
storage := newBucketStorage(durationHistogramType, buckets)
h := newHistogram(durationHistogramType, "h1", nil, r, storage, nil)
var offset time.Duration
for i := 0; i < 3; i++ {
h.RecordDuration(offset +
time.Duration(rand.Float64()*float64(10*time.Millisecond)))
}
offset = 50 * time.Millisecond
for i := 0; i < 5; i++ {
h.RecordDuration(offset +
time.Duration(rand.Float64()*float64(10*time.Millisecond)))
}
h.report(h.name, h.tags, r)
assert.Equal(t, 3, r.durationSamples[10*time.Millisecond])
assert.Equal(t, 5, r.durationSamples[60*time.Millisecond])
assert.Equal(t, buckets, r.buckets)
}
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