def test_get_country_region_lookup():
    countries = get_country_region_lookup()
    assert (len(countries) > 100)
    assert (len(countries) < 1000)
    assert all(((len(k) == 2) for k in countries.keys()))
    assert all(((type(v) is tuple) for v in countries.values()))
    assert all(((len(v) == 2) for v in countries.values()))
    all_regions = {v[1] for v in countries.values()}
    assert (len(all_regions) == 18)
def test_get_country_region_lookup():
    countries = get_country_region_lookup()
    assert (len(countries) > 100)
    assert (len(countries) < 1000)
    assert all(((len(k) == 2) for k in countries.keys()))
    assert all(((type(v) is tuple) for v in countries.values()))
    assert all(((len(v) == 2) for v in countries.values()))
    all_regions = {v[1] for v in countries.values()}
    assert (len(all_regions) == 18)