def test_alphabetic_message_is_text(self): self.assertTrue(is_text("hello"))
def test_is_not_text_if_just_numbered_list(self): self.assertFalse(is_text("1.\n2.\n3.\n"))
def test_is_not_text_if_just_space(self): self.assertFalse(is_text(" \t\t\n"))
def test_is_not_text_if_just_numbers(self): self.assertFalse(is_text(" 1\n 2\n 3\n"))