public void WhenConsumerIsNolongerApproved_ThenThrowsException()
        {
            var mocker = new AutoMoqer();
            mocker.GetMock<IOAuthRequest>().Setup(x => x.ContentType).Returns(ContentType.FormEncoded);
            mocker.GetMock<IOAuthRequest>().Setup(x => x.ClientId).Returns("clientid");
            mocker.GetMock<IOAuthRequest>().Setup(x => x.GrantType).Returns(GrantType.RefreshToken);
            mocker.GetMock<IConsumerRepository>().Setup(x => x.GetByClientId("clientid")).Returns(new ConsumerImpl { ConsumerId = 12, ClientId = "clientid", Secret = "clientsecret" });
            mocker.GetMock<IResourceOwnerRepository>().Setup(x => x.IsConsumerApproved(10, 12)).Returns(false);
            mocker.GetMock<IOAuthRequest>().Setup(x => x.ClientSecret).Returns("clientsecret");
            mocker.SetInstance<IOAuthIssuer>(new OAuthIssuer());
            var issuer = new OAuthIssuer();

            var authorizer = mocker.Resolve<RefreshTokenRequestAuthorizer>();

            var token = issuer.GenerateRefreshToken(new TokenData { ConsumerId = 12, ResourceOwnerId = 10, Timestamp = 1 });
            mocker.GetMock<IOAuthRequest>().Setup(x => x.RefreshToken).Returns(token);

            try
            {
                authorizer.Authorize(mocker.GetMock<IOAuthRequest>().Object);
                Assert.Fail("Exception not thrown");
            }
            catch (OAuthException ex)
            {
                Assert.AreEqual(ErrorCode.UnauthorizedClient, ex.ErrorCode);
                Assert.IsTrue(!string.IsNullOrWhiteSpace(ex.ErrorDescription));
            }
        }
        public void WhenDataIsValid_ThenNewTokenIsCreated()
        {
            var mocker = new AutoMoqer();
            mocker.GetMock<IOAuthRequest>().Setup(x => x.ContentType).Returns(ContentType.FormEncoded);
            mocker.GetMock<IOAuthRequest>().Setup(x => x.ClientId).Returns("clientid");
            mocker.GetMock<IOAuthRequest>().Setup(x => x.GrantType).Returns(GrantType.RefreshToken);
            mocker.GetMock<IConsumerRepository>().Setup(x => x.GetByClientId("clientid")).Returns(new ConsumerImpl { ConsumerId = 12, ClientId = "clientid", Secret = "clientsecret" });
            mocker.GetMock<IResourceOwnerRepository>().Setup(x => x.IsConsumerApproved(10, 12)).Returns(true);
            mocker.GetMock<IOAuthRequest>().Setup(x => x.ClientSecret).Returns("clientsecret");
            mocker.SetInstance<IOAuthIssuer>(new OAuthIssuer());
            var issuer = new OAuthIssuer();

            var authorizer = mocker.Resolve<RefreshTokenRequestAuthorizer>();

            var token = issuer.GenerateRefreshToken(new TokenData { ConsumerId = 12, ResourceOwnerId = 10, Timestamp = 1 });
            mocker.GetMock<IOAuthRequest>().Setup(x => x.RefreshToken).Returns(token);

            var newToken = authorizer.Authorize(mocker.GetMock<IOAuthRequest>().Object);

            Assert.IsNotNull(newToken);

            var accessTokenData = issuer.DecodeAccessToken(newToken.AccessToken);
            Assert.IsNotNull(accessTokenData);
            Assert.AreEqual(10, accessTokenData.ResourceOwnerId);
            Assert.IsTrue(accessTokenData.Timestamp > DateTimeOffset.UtcNow.AddMinutes(-5).Ticks);

            var refreshTokenData = issuer.DecodeRefreshToken(newToken.RefreshToken);
            Assert.IsNotNull(refreshTokenData);
            Assert.AreEqual(12, refreshTokenData.ConsumerId);
            Assert.AreEqual(10, refreshTokenData.ResourceOwnerId);
            Assert.IsTrue(refreshTokenData.Timestamp > DateTimeOffset.UtcNow.AddMinutes(-5).Ticks);
        }