telegraf/metric_test.go

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package telegraf
import (
"fmt"
"math"
"testing"
"time"
"github.com/stretchr/testify/assert"
)
func TestNewMetric(t *testing.T) {
now := time.Now()
tags := map[string]string{
"host": "localhost",
"datacenter": "us-east-1",
}
fields := map[string]interface{}{
"usage_idle": float64(99),
"usage_busy": float64(1),
}
m, err := NewMetric("cpu", tags, fields, now)
assert.NoError(t, err)
assert.Equal(t, tags, m.Tags())
assert.Equal(t, fields, m.Fields())
assert.Equal(t, "cpu", m.Name())
assert.Equal(t, now, m.Time())
assert.Equal(t, now.UnixNano(), m.UnixNano())
}
func TestNewMetricString(t *testing.T) {
now := time.Now()
tags := map[string]string{
"host": "localhost",
}
fields := map[string]interface{}{
"usage_idle": float64(99),
}
m, err := NewMetric("cpu", tags, fields, now)
assert.NoError(t, err)
lineProto := fmt.Sprintf("cpu,host=localhost usage_idle=99 %d",
now.UnixNano())
assert.Equal(t, lineProto, m.String())
lineProtoPrecision := fmt.Sprintf("cpu,host=localhost usage_idle=99 %d",
now.Unix())
assert.Equal(t, lineProtoPrecision, m.PrecisionString("s"))
}
func TestNewMetricFailNaN(t *testing.T) {
now := time.Now()
tags := map[string]string{
"host": "localhost",
}
fields := map[string]interface{}{
"usage_idle": math.NaN(),
}
_, err := NewMetric("cpu", tags, fields, now)
assert.Error(t, err)
}