def test_ten_one(self): self.assertEqual(task1_10.ten("ok"), "ok")
def test_ten_empty(self): self.assertEqual(task1_10.ten(""), "")
def test_ten_latin(self): self.assertEqual( task1_10.ten( "hello world and practice makes perfect and hello world again" ), "again and hello makes perfect practice world")
def test_ten_ukrainian(self): self.assertEqual(task1_10.ten("Київ Чернівці Черкаси Чернівці"), "Київ Черкаси Чернівці")
def test_ten_first_letter_equal(self): self.assertEqual(task1_10.ten("six seven"), "seven six")
def test_ten_duplicates(self): self.assertEqual(task1_10.ten("hi hi mam mam"), "hi mam")