def test_change_two_words_in_string_with_same_value(self):
     self.assertEqual([
         "no,no,answer,is,no", True, "yes: replaced 2 times" +
         "the: replaced 1 time" + "twelve: replaced 0 times"
     ],
                      replacer("yes,the,answer,is,yes",
                               ["yes", "the", "twelve"],
                               ["no", "no", "thirteen"]))
 def test_many(self):
     self.assertEqual([
         "no,a,answer,is,no", True, "yes: replaced 2 times" +
         "the: replaced 1 time" + "twelve: replaced 0 times"
     ],
                      replacer("yes,the,answer,is,yes",
                               ["yes", "the", "twelve"],
                               ["no", "a", "thirteen"]))
 def test_delete_word_in_string(self):
     self.assertEqual([
         ",a,answer,is,", True, "yes: replaced 2 times" +
         "the: replaced 1 time" + "twelve: replaced 0 times"
     ],
                      replacer("yes,the,answer,is,yes",
                               ["yes", "the", "twelve"],
                               ["", "a", "thirteen"]))
 def test_single(self):
     self.assertEqual(
         ["no,the,answer,is,no", True, "yes: replaced 2 times"],
         replacer("yes,the,answer,is,yes", ["yes"], ["no"]))
 def test_empty_argument_word_to_change(self):
     with self.assertRaises(ValueError):
         replacer("test, thirteen, the", ["", "the"], ["no", "test"])
 def test_empty_string(self):
     with self.assertRaises(ValueError):
         replacer("", ["test", "the"], ["no", "test"])
 def test_wrong_input_in_words_that_will_change(self):
     with self.assertRaises(ValueError):
         replacer("test,dfdf,sdfdsf", ["test", "the"], ["no", 1])
 def test_wrong_input_in_words_to_be_changed(self):
     with self.assertRaises(ValueError):
         replacer("test,dfdf,sdfdsf", [1, "the"], ["no"])
 def test_wrong_input_in_string(self):
     with self.assertRaises(ValueError):
         replacer(1, ["yes", "the"], ["no"])
 def test_duplicated_values_in_words_to_be_changed(self):
     with self.assertRaises(ValueError):
         replacer("yes,the,answer,is,yes", ["yes", "yes", "the"], ["no"])
 def test_len_not_equal(self):
     self.assertEqual(
         ['yes,the,answer,is,yes', False, 'List lengths do not match'],
         replacer("yes,the,answer,is,yes", ["yes", "the"], ["no"]))