public void When_there_is_a_cookie_Then_GetValue_returns_value()
{
var existingCookie = new HttpCookie("cookie");
existingCookie.Value = "value";
_httpRequest.Object.Cookies.Add(existingCookie);
string value = _cookieContainer.GetValue("cookie");
Assert.That(value, Is.EqualTo("value"), "cookie value");
}