def test_ok_1_is_valid_hostname(): is_valid_hostname("www.google.com")
def test_ko_2_is_valid_hostname(): with pytest.raises(ValueError): is_valid_hostname("")
def test_is_valid_hostname(): with pytest.raises(ValueError): is_valid_hostname("")
def test_ko_1_is_valid_hostname(): with pytest.raises(gaierror): is_valid_hostname(" ")
def test_ko_1_is_valid_hostname(): with pytest.raises(gaierror): is_valid_hostname(" ")