def test_get_urls():
    assert len(IJsselsteinloop.get_urls(2003, 2019)) == 253, "Should be 253"
def test_get_results():
    assert IJsselsteinloop.get_results(
        IJsselsteinloop.get_urls(2003,
                                 2003)[:2]).shape == (242,
                                                      7), "Should be (242, 7)"