for k := range got {
				if _, ok := exp[k]; !ok && got[k] > 0 {
					t.Fatalf("Unexpected interval: %s has value %d\n", k, got[k])
				}
			}
		})
	}
}

func TestMigrateSizeHistogramFromV1(t *testing.T) {
	tests := []struct {
		v    sizeHistogramV1
		want sizeHistogram
	}{
		{
			v:    sizeHistogramV1{0: 10, 1: 20, 2: 3},
			want: sizeHistogram{0: 10, 5: 20, 6: 3},
		},
		{