def test_equal_3(self):
     self.assertEqual(counter_effect('0000'), [[0], [0], [0], [0]])
 def test_equal_1(self):
     self.assertEqual(counter_effect('1250'),
                      [[0, 1], [0, 1, 2], [0, 1, 2, 3, 4, 5], [0]])
 def test_equal_2(self):
     self.assertEqual(counter_effect('0050'),
                      [[0], [0], [0, 1, 2, 3, 4, 5], [0]])