def test_renumber_residue_letter(self):
s = ModernaStructure('file', MINI_TEMPLATE)
self.assertTrue(s['3'])
self.assertRaises(RNAChainError, s.__getitem__, '3A')
s.renumber_residue('3', '3A')
self.assertTrue(s['3A'])
self.assertRaises(RNAChainError, s.__getitem__, '3')
self.assertEqual(s['3A'].identifier, '3A')
def test_renumber_residue_with_error(self):
"""Renumbering errors should not remove a residue."""
s = ModernaStructure('file', MINI_TEMPLATE)
self.assertRaises(RNAChainError, s.renumber_residue, '5', 'a')
s.renumber_residue('5', '12A')
self.assertTrue(s['12A'])
