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50 lines
1.2 KiB
Go
50 lines
1.2 KiB
Go
package metric
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import (
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"strings"
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"testing"
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"github.com/prometheus/client_golang/prometheus/testutil"
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"github.com/stretchr/testify/assert"
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)
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func TestNewHistogramVec(t *testing.T) {
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histogramVec := NewHistogramVec(&HistogramVecOpts{
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Name: "duration_ms",
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Help: "rpc server requests duration(ms).",
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Buckets: []float64{1, 2, 3},
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})
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defer histogramVec.close()
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histogramVecNil := NewHistogramVec(nil)
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assert.NotNil(t, histogramVec)
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assert.Nil(t, histogramVecNil)
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}
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func TestHistogramObserve(t *testing.T) {
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histogramVec := NewHistogramVec(&HistogramVecOpts{
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Name: "counts",
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Help: "rpc server requests duration(ms).",
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Buckets: []float64{1, 2, 3},
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Labels: []string{"method"},
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})
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defer histogramVec.close()
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hv, _ := histogramVec.(*promHistogramVec)
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hv.Observe(2, "/Users")
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metadata := `
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# HELP counts rpc server requests duration(ms).
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# TYPE counts histogram
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`
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val := `
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counts_bucket{method="/Users",le="1"} 0
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counts_bucket{method="/Users",le="2"} 1
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counts_bucket{method="/Users",le="3"} 1
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counts_bucket{method="/Users",le="+Inf"} 1
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counts_sum{method="/Users"} 2
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counts_count{method="/Users"} 1
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`
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err := testutil.CollectAndCompare(hv.histogram, strings.NewReader(metadata+val))
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assert.Nil(t, err)
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}
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