def test_four_nt(self):
     self.assertEqual(set(['ACCG', 'ACCA']),
                      set(quality_filter.all_unambiguous('ACCR')))
     self.assertEqual(4**4, len(quality_filter.all_unambiguous('NNNN')))
 def test_four_nt(self):
     self.assertEqual(set(['ACCG', 'ACCA']),
                      set(quality_filter.all_unambiguous('ACCR')))
     self.assertEqual(4**4, len(quality_filter.all_unambiguous('NNNN')))
 def test_one_nt(self):
     self.assertEqual(set('ACGT'), set(quality_filter.all_unambiguous('N')))
 def test_one_nt(self):
     self.assertEqual(set('ACGT'), set(quality_filter.all_unambiguous('N')))