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38 lines
607 B
Go
38 lines
607 B
Go
package histogram
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import (
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"math/rand"
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"testing"
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)
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func TestHistogram(t *testing.T) {
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const numPoints = 1e6
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const maxBins = 3
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h := New(maxBins)
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for i := 0; i < numPoints; i++ {
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f := rand.ExpFloat64()
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h.Insert(f)
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}
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bins := h.Bins()
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if g := len(bins); g > maxBins {
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t.Fatalf("got %d bins, wanted <= %d", g, maxBins)
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}
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for _, b := range bins {
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t.Logf("%+v", b)
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}
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if g := count(h.Bins()); g != numPoints {
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t.Fatalf("binned %d points, wanted %d", g, numPoints)
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}
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}
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func count(bins Bins) int {
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binCounts := 0
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for _, b := range bins {
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binCounts += b.Count
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}
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return binCounts
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}
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