def METHOD_NAME():
    """Test the ``is_datetime_type`` function when a datetime is passed.
    Expect to return True when a datetime variable is passed.
    Input:
    - datetime.Datetime
    Output:
    - True
    """
    # Setup
    data = datetime(2020, 1, 1)
    # Run
    is_datetime = is_datetime_type(data)
    # Assert
    assert is_datetime