def test_can_update_expression_system(self):
pdb = Pdb()
pdb._expression_system = "GGG SSS"
pdb.expression_system = "GG SSSSSS"
self.assertEqual(pdb._expression_system, "GG SSSSSS")
def test_can_get_pdb_expression_system(self):
pdb = Pdb()
pdb._expression_system = "GGG SSS"
self.assertIs(pdb._expression_system, pdb.expression_system)
