from src.version_manager import VersionManager


def run_tests():
    # Test it_1: Initialization
    assert VersionManager().release() == "0.0.1"
    assert VersionManager("1.2.3").release() == "1.2.3"
    assert VersionManager("1").release() == "1.0.0"

    # Test it_5: Rollbacks
    vm = VersionManager().major().rollback()
    assert vm.release() == "0.0.1"

    # Test it_7: Exception Handling
    try:
        VersionManager("a")
    except Exception as e:
        assert str(e) == "Error occured while parsing version!"

    # Test it_8: Rollback failure
    vm2 = VersionManager()
    try:
        vm2.rollback()
    except Exception as e:
        assert str(e) == "Cannot rollback!"

    print("All tests passed!")


run_tests()