def test_simulate_matches(self):
        P1 = axelrod.MindReader()
        P2 = axelrod.Grudger()
        simulate_match(P1, P2, C, 4)
        self.assertEqual(P2.history, [C, C, C, C])
If the newest version of a package is already installed, the package should
dataset/ETHPy150Open Axelrod-Python/Axelrod/axelrod/tests/unit/test_mindreader.py/TestMindReader.test_simulate_matches--crossover with--dataset/ETHPy150Open pypa/pip/tests/functional/test_install_upgrade.py/test_upgrade_with_newest_already_installed