def test_max_age_invalid_str(self):
        """Test case where a invalid max age is passed."""

        morsel = Morsel()
        morsel["max-age"] = "woops"
        with pytest.raises(TypeError):
            morsel_to_cookie(morsel)

    def test_expires_invalid_str(self):
        """Test case where an invalid string is input."""

        morsel = Morsel()
        morsel["expires"] = "woops"
        with pytest.raises(ValueError):
            morsel_to_cookie(morsel)

    def test_expires_invalid_int(self):
        """Test case where an invalid type is passed for expires."""

        morsel = Morsel()
        morsel["expires"] = 100
        with pytest.raises(TypeError):
            morsel_to_cookie(morsel)

    def test_max_age_valid_int(self):
        """Test case where a valid max age in seconds is passed."""

        morsel = Morsel()
        morsel["max-age"] = 60
        cookie = morsel_to_cookie(morsel)
        assert isinstance(cookie.expires, int)

    def test_expires_none(self):
        """Test case where expires is None."""

        morsel = Morsel()
        morsel["expires"] = None
        cookie = morsel_to_cookie(morsel)
        assert cookie.expires is None

    def test_expires_valid_str(self):
        """Test case where we convert expires from string time."""

        morsel = Morsel()
        morsel["expires"] = "Thu, 01-Jan-1970 00:00:01 GMT"
        cookie = morsel_to_cookie(morsel)
        assert cookie.expires == 1

 def proceed(self):
     script = self.doc.xpath('//script/text()')[0]
     cookieStr = re.match('.*document\.cookie = "([^"]+)".*',
                          script, re.DOTALL).group(1)
     morsel = Cookie.Cookie(cookieStr).values()[0]
     self.browser.session.cookies.set_cookie(morsel_to_cookie(morsel))
     form = self.get_form()
     return form.submit()

 def test_expires_invalid_int(self, value, exception):
     """Test case where an invalid type is passed for expires."""
     morsel = Morsel()
     morsel['expires'] = value
     with pytest.raises(exception):
         morsel_to_cookie(morsel)