import unittest

from catopt_graph.core import ContractRegistry


class TestContractRegistry(unittest.TestCase):
    def test_register_and_get_contract_versions(self):
        reg = ContractRegistry()
        reg.register_contract("LocalProblem", {"foo": "bar"}, version="1.0.0")
        reg.register_contract("LocalProblem", {"foo": "baz"}, version="1.1.0")

        c_latest = reg.get_contract("LocalProblem")
        c_10 = reg.get_contract("LocalProblem", version="1.0.0")
        c_11 = reg.get_contract("LocalProblem", version="1.1.0")

        self.assertIsNotNone(c_latest)
        self.assertEqual(c_10, {"foo": "bar"})
        self.assertEqual(c_11, {"foo": "baz"})

        # The latest should reflect the highest version number
        self.assertEqual(c_latest, c_11)

    def test_list_contracts(self):
        reg = ContractRegistry()
        reg.register_contract("X", {"a": 1}, version="0.1.0")
        reg.register_contract("Y", {"b": 2}, version="0.1.0")
        all_contracts = reg.list_contracts()
        self.assertIn("X", all_contracts)
        self.assertIn("Y", all_contracts)


if __name__ == "__main__":
    unittest.main()