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39 lines
985 B
Go
39 lines
985 B
Go
package metric
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import (
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"testing"
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"time"
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"github.com/prometheus/common/model"
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"github.com/stretchr/testify/assert"
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)
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func TestHistogramExpiration(t *testing.T) {
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t.Parallel()
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cfg := HistogramConfig{}
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hist, err := NewHistograms("test1", "HELP ME!!!!!", cfg, 1)
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assert.Nil(t, err)
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// Create a label and increment the histogram
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lbl1 := model.LabelSet{}
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lbl1["test"] = "app"
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hist.With(lbl1).Observe(23)
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// Collect the metrics, should still find the metric in the map
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collect(hist)
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assert.Contains(t, hist.metrics, lbl1.Fingerprint())
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time.Sleep(1100 * time.Millisecond) // Wait just past our max idle of 1 sec
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//Add another histogram with new label val
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lbl2 := model.LabelSet{}
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lbl2["test"] = "app2"
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hist.With(lbl2).Observe(2)
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// Collect the metrics, first histogram should have expired and removed, second should still be present
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collect(hist)
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assert.NotContains(t, hist.metrics, lbl1.Fingerprint())
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assert.Contains(t, hist.metrics, lbl2.Fingerprint())
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}
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