def test_should_strip_all_non_letter_characters_from_message(): message = b'we are discovered. flee at once.' assert_equal(_normalize(message), b"wearediscoveredfleeatonce")
def test_should_return_same_message_if_only_letters(): message = b'hallowelt' assert_equal(_normalize(message), message)
def test_should_return_empty_message(): message = b'' assert_equal(_normalize(message), message)
