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stats_test.go
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/*
*
* k6 - a next-generation load testing tool
* Copyright (C) 2016 Load Impact
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
package stats
import (
"encoding/json"
"fmt"
"testing"
"time"
"github.com/stretchr/testify/assert"
)
func TestMetricHumanizeValue(t *testing.T) {
t.Parallel()
data := map[*Metric]map[float64][]string{
{Type: Counter, Contains: Default}: {
1.0: {"1", "1", "1", "1"},
1.5: {"1.5", "1.5", "1.5", "1.5"},
1.54321: {"1.54321", "1.54321", "1.54321", "1.54321"},
},
{Type: Gauge, Contains: Default}: {
1.0: {"1", "1", "1", "1"},
1.5: {"1.5", "1.5", "1.5", "1.5"},
1.54321: {"1.54321", "1.54321", "1.54321", "1.54321"},
},
{Type: Trend, Contains: Default}: {
1.0: {"1", "1", "1", "1"},
1.5: {"1.5", "1.5", "1.5", "1.5"},
1.54321: {"1.54321", "1.54321", "1.54321", "1.54321"},
},
{Type: Counter, Contains: Time}: {
D(1): {"1ns", "0.00s", "0.00ms", "0.00µs"},
D(12): {"12ns", "0.00s", "0.00ms", "0.01µs"},
D(123): {"123ns", "0.00s", "0.00ms", "0.12µs"},
D(1234): {"1.23µs", "0.00s", "0.00ms", "1.23µs"},
D(12345): {"12.34µs", "0.00s", "0.01ms", "12.35µs"},
D(123456): {"123.45µs", "0.00s", "0.12ms", "123.46µs"},
D(1234567): {"1.23ms", "0.00s", "1.23ms", "1234.57µs"},
D(12345678): {"12.34ms", "0.01s", "12.35ms", "12345.68µs"},
D(123456789): {"123.45ms", "0.12s", "123.46ms", "123456.79µs"},
D(1234567890): {"1.23s", "1.23s", "1234.57ms", "1234567.89µs"},
D(12345678901): {"12.34s", "12.35s", "12345.68ms", "12345678.90µs"},
D(123456789012): {"2m3s", "123.46s", "123456.79ms", "123456789.01µs"},
D(1234567890123): {"20m34s", "1234.57s", "1234567.89ms", "1234567890.12µs"},
D(12345678901234): {"3h25m45s", "12345.68s", "12345678.90ms", "12345678901.23µs"},
D(123456789012345): {"34h17m36s", "123456.79s", "123456789.01ms", "123456789012.35µs"},
},
{Type: Gauge, Contains: Time}: {
D(1): {"1ns", "0.00s", "0.00ms", "0.00µs"},
D(12): {"12ns", "0.00s", "0.00ms", "0.01µs"},
D(123): {"123ns", "0.00s", "0.00ms", "0.12µs"},
D(1234): {"1.23µs", "0.00s", "0.00ms", "1.23µs"},
D(12345): {"12.34µs", "0.00s", "0.01ms", "12.35µs"},
D(123456): {"123.45µs", "0.00s", "0.12ms", "123.46µs"},
D(1234567): {"1.23ms", "0.00s", "1.23ms", "1234.57µs"},
D(12345678): {"12.34ms", "0.01s", "12.35ms", "12345.68µs"},
D(123456789): {"123.45ms", "0.12s", "123.46ms", "123456.79µs"},
D(1234567890): {"1.23s", "1.23s", "1234.57ms", "1234567.89µs"},
D(12345678901): {"12.34s", "12.35s", "12345.68ms", "12345678.90µs"},
D(123456789012): {"2m3s", "123.46s", "123456.79ms", "123456789.01µs"},
D(1234567890123): {"20m34s", "1234.57s", "1234567.89ms", "1234567890.12µs"},
D(12345678901234): {"3h25m45s", "12345.68s", "12345678.90ms", "12345678901.23µs"},
D(123456789012345): {"34h17m36s", "123456.79s", "123456789.01ms", "123456789012.35µs"},
},
{Type: Trend, Contains: Time}: {
D(1): {"1ns", "0.00s", "0.00ms", "0.00µs"},
D(12): {"12ns", "0.00s", "0.00ms", "0.01µs"},
D(123): {"123ns", "0.00s", "0.00ms", "0.12µs"},
D(1234): {"1.23µs", "0.00s", "0.00ms", "1.23µs"},
D(12345): {"12.34µs", "0.00s", "0.01ms", "12.35µs"},
D(123456): {"123.45µs", "0.00s", "0.12ms", "123.46µs"},
D(1234567): {"1.23ms", "0.00s", "1.23ms", "1234.57µs"},
D(12345678): {"12.34ms", "0.01s", "12.35ms", "12345.68µs"},
D(123456789): {"123.45ms", "0.12s", "123.46ms", "123456.79µs"},
D(1234567890): {"1.23s", "1.23s", "1234.57ms", "1234567.89µs"},
D(12345678901): {"12.34s", "12.35s", "12345.68ms", "12345678.90µs"},
D(123456789012): {"2m3s", "123.46s", "123456.79ms", "123456789.01µs"},
D(1234567890123): {"20m34s", "1234.57s", "1234567.89ms", "1234567890.12µs"},
D(12345678901234): {"3h25m45s", "12345.68s", "12345678.90ms", "12345678901.23µs"},
D(123456789012345): {"34h17m36s", "123456.79s", "123456789.01ms", "123456789012.35µs"},
},
{Type: Rate, Contains: Default}: {
0.0: {"0.00%", "0.00%", "0.00%", "0.00%"},
0.01: {"1.00%", "1.00%", "1.00%", "1.00%"},
0.02: {"2.00%", "2.00%", "2.00%", "2.00%"},
0.022: {"2.19%", "2.19%", "2.19%", "2.19%"}, // caused by float truncation
0.0222: {"2.22%", "2.22%", "2.22%", "2.22%"},
0.02222: {"2.22%", "2.22%", "2.22%", "2.22%"},
0.022222: {"2.22%", "2.22%", "2.22%", "2.22%"},
1.0 / 3.0: {"33.33%", "33.33%", "33.33%", "33.33%"},
0.5: {"50.00%", "50.00%", "50.00%", "50.00%"},
0.55: {"55.00%", "55.00%", "55.00%", "55.00%"},
0.555: {"55.50%", "55.50%", "55.50%", "55.50%"},
0.5555: {"55.55%", "55.55%", "55.55%", "55.55%"},
0.55555: {"55.55%", "55.55%", "55.55%", "55.55%"},
0.75: {"75.00%", "75.00%", "75.00%", "75.00%"},
0.999995: {"99.99%", "99.99%", "99.99%", "99.99%"},
1.0: {"100.00%", "100.00%", "100.00%", "100.00%"},
1.5: {"150.00%", "150.00%", "150.00%", "150.00%"},
},
}
for m, values := range data {
m, values := m, values
t.Run(fmt.Sprintf("type=%s,contains=%s", m.Type.String(), m.Contains.String()), func(t *testing.T) {
t.Parallel()
for v, s := range values {
t.Run(fmt.Sprintf("v=%f", v), func(t *testing.T) {
t.Run("no fixed unit", func(t *testing.T) {
assert.Equal(t, s[0], m.HumanizeValue(v, ""))
})
t.Run("unit fixed in s", func(t *testing.T) {
assert.Equal(t, s[1], m.HumanizeValue(v, "s"))
})
t.Run("unit fixed in ms", func(t *testing.T) {
assert.Equal(t, s[2], m.HumanizeValue(v, "ms"))
})
t.Run("unit fixed in µs", func(t *testing.T) {
assert.Equal(t, s[3], m.HumanizeValue(v, "us"))
})
})
}
})
}
}
func TestNew(t *testing.T) {
t.Parallel()
testdata := map[string]struct {
Type MetricType
SinkType Sink
}{
"Counter": {Counter, &CounterSink{}},
"Gauge": {Gauge, &GaugeSink{}},
"Trend": {Trend, &TrendSink{}},
"Rate": {Rate, &RateSink{}},
}
for name, data := range testdata {
name, data := name, data
t.Run(name, func(t *testing.T) {
t.Parallel()
m := New("my_metric", data.Type)
assert.Equal(t, "my_metric", m.Name)
assert.IsType(t, data.SinkType, m.Sink)
})
}
}
func TestNewSubmetric(t *testing.T) {
t.Parallel()
testdata := map[string]struct {
parent string
tags map[string]string
}{
"my_metric": {"my_metric", nil},
"my_metric{}": {"my_metric", nil},
"my_metric{a}": {"my_metric", map[string]string{"a": ""}},
"my_metric{a:1}": {"my_metric", map[string]string{"a": "1"}},
"my_metric{ a : 1 }": {"my_metric", map[string]string{"a": "1"}},
"my_metric{a,b}": {"my_metric", map[string]string{"a": "", "b": ""}},
"my_metric{a:1,b:2}": {"my_metric", map[string]string{"a": "1", "b": "2"}},
"my_metric{ a : 1, b : 2 }": {"my_metric", map[string]string{"a": "1", "b": "2"}},
}
for name, data := range testdata {
name, data := name, data
t.Run(name, func(t *testing.T) {
t.Parallel()
parent, sm := NewSubmetric(name)
assert.Equal(t, data.parent, parent)
if data.tags != nil {
assert.EqualValues(t, data.tags, sm.Tags.tags)
} else {
assert.Nil(t, sm.Tags)
}
})
}
}
func TestSampleTags(t *testing.T) {
t.Parallel()
// Nil pointer to SampleTags
var nilTags *SampleTags
assert.True(t, nilTags.IsEqual(nilTags))
assert.Equal(t, map[string]string{}, nilTags.CloneTags())
nilJSON, err := json.Marshal(nilTags)
assert.NoError(t, err)
assert.Equal(t, "null", string(nilJSON))
// Empty SampleTags
emptyTagMap := map[string]string{}
emptyTags := NewSampleTags(emptyTagMap)
assert.Nil(t, emptyTags)
assert.True(t, emptyTags.IsEqual(emptyTags))
assert.True(t, emptyTags.IsEqual(nilTags))
assert.Equal(t, emptyTagMap, emptyTags.CloneTags())
emptyJSON, err := json.Marshal(emptyTags)
assert.NoError(t, err)
assert.Equal(t, "null", string(emptyJSON))
var emptyTagsUnmarshaled *SampleTags
err = json.Unmarshal(emptyJSON, &emptyTagsUnmarshaled)
assert.NoError(t, err)
assert.Nil(t, emptyTagsUnmarshaled)
assert.True(t, emptyTagsUnmarshaled.IsEqual(emptyTags))
assert.True(t, emptyTagsUnmarshaled.IsEqual(nilTags))
assert.Equal(t, emptyTagMap, emptyTagsUnmarshaled.CloneTags())
// SampleTags with keys and values
tagMap := map[string]string{"key1": "val1", "key2": "val2"}
tags := NewSampleTags(tagMap)
assert.NotNil(t, tags)
assert.True(t, tags.IsEqual(tags))
assert.False(t, tags.IsEqual(nilTags))
assert.False(t, tags.IsEqual(emptyTags))
assert.False(t, tags.IsEqual(IntoSampleTags(&map[string]string{"key1": "val1", "key2": "val3"})))
assert.True(t, tags.Contains(IntoSampleTags(&map[string]string{"key1": "val1"})))
assert.False(t, tags.Contains(IntoSampleTags(&map[string]string{"key3": "val1"})))
assert.Equal(t, tagMap, tags.CloneTags())
assert.Nil(t, tags.json) // No cache
tagsJSON, err := json.Marshal(tags)
expJSON := `{"key1":"val1","key2":"val2"}`
assert.NoError(t, err)
assert.JSONEq(t, expJSON, string(tagsJSON))
assert.JSONEq(t, expJSON, string(tags.json)) // Populated cache
var tagsUnmarshaled *SampleTags
err = json.Unmarshal(tagsJSON, &tagsUnmarshaled)
assert.NoError(t, err)
assert.NotNil(t, tagsUnmarshaled)
assert.True(t, tagsUnmarshaled.IsEqual(tags))
assert.False(t, tagsUnmarshaled.IsEqual(nilTags))
assert.Equal(t, tagMap, tagsUnmarshaled.CloneTags())
}
func TestSampleImplementations(t *testing.T) {
tagMap := map[string]string{"key1": "val1", "key2": "val2"}
now := time.Now()
sample := Sample{
Metric: New("test_metric", Counter),
Time: now,
Tags: NewSampleTags(tagMap),
Value: 1.0,
}
samples := Samples(sample.GetSamples())
cSamples := ConnectedSamples{
Samples: []Sample{sample},
Time: now,
Tags: NewSampleTags(tagMap),
}
exp := []Sample{sample}
assert.Equal(t, exp, sample.GetSamples())
assert.Equal(t, exp, samples.GetSamples())
assert.Equal(t, exp, cSamples.GetSamples())
assert.Equal(t, now, sample.GetTime())
assert.Equal(t, now, cSamples.GetTime())
assert.Equal(t, sample.GetTags(), sample.GetTags())
}