public void GetRoles_UserIdentityIsNull_ReturnsEmptyCollection()
        {
            var sut   = new NullIdentityProvider <int>();
            var roles = sut.GetRoles();

            Assert.AreEqual(0, roles.Count);
        }
        public void GetUserId_UserIdentityIsNull_ReturnsDefaultValue()
        {
            var sut = new NullIdentityProvider <int>();

            Assert.AreEqual(0, sut.GetUserId());
        }
        public void IsAuthenticated_UserIdentityIsNull_ReturnsFalse()
        {
            var sut = new NullIdentityProvider <int>();

            Assert.IsFalse(sut.IsAuthenticated);
        }