def test_twice_as_many_ints(x): """Test the number of integers resulting from duplicate. """ assert num_ints(duplicate(x)) == 2 * num_ints(x)
def test_duplicate_doctest(): """Test the doctest example for duplicate.""" nested_list = [1, [2, 3]] expected = [1, 1, [2, 2, 3, 3]] assert duplicate(nested_list) == expected
def test_handles_integers(x): """Test duplicate when given an integer.""" assert duplicate(x) == [x, x]