public void Logout_ClearsSessionValues()
        {
            var cu = new CurrentUserSession
                {
                    Authenticated = true,
                    EmailAddress = "*****@*****.**",
                    JustGivingPassword = "******",
                    OrganisationName = "Orgname",
                    Pages = new FundraisingPageSummaries()
                };

            cu.Logout();

            Assert.That(cu.Authenticated, Is.False);
            Assert.That(cu.EmailAddress, Is.EqualTo(string.Empty));
            Assert.That(cu.JustGivingPassword, Is.EqualTo(string.Empty));
            Assert.That(cu.OrganisationName, Is.EqualTo(string.Empty));
            Assert.That(cu.Pages, Is.Null);
        }