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import pytest
import sys
from pbcore.util.statistics import accuracy_as_phred_qv, phred_qv_as_accuracy
class TestStatistics:
def test_accuracy_as_phred_qv(self):
qv = accuracy_as_phred_qv(0.999)
assert int(round(qv)) == 30
qv = accuracy_as_phred_qv(1.0, max_qv=60)
assert int(round(qv)) == 60
qv = accuracy_as_phred_qv([0.95, 1.0, 0.99999])
qvs = [int(round(x)) for x in qv]
assert qvs == [13, 60, 50]
def test_phred_qv_as_accuracy(self):
assert phred_qv_as_accuracy(20) == 0.99
assert phred_qv_as_accuracy(30) == 0.999
assert phred_qv_as_accuracy(10) == 0.9
assert phred_qv_as_accuracy(0) == 0
with pytest.raises(ValueError):
x = phred_qv_as_accuracy(-1)
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