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using System;
using System.Web;
using DotNetOpenAuth.Messaging;
using DotNetOpenAuth.OAuth.Messages;
using DotNetOpenAuth.AspNet.Clients;
using Moq;
using NUnit.Framework;
using DotNetOpenAuth.AspNet;

namespace DotNetOpenAuth.AspNet.Test
{
    [TestFixture]
    public class OAuthClientTest
    {
        [TestCase]
        public void TestProviderNamePropertyIsCorrect()
        {
            // Arrange
            var client = new MockOAuthClient();

            // Act
            var provider = client.ProviderName;

            // Assert
            Assert.AreEqual("mockoauth", provider);
        }

        [TestCase]
        public void RequestAuthenticationInvokeMethodOnWebWorker()
        {
            // Arrange
            var webWorker = new Mock<IOAuthWebWorker>(MockBehavior.Strict);
            webWorker.Setup(
                        w => w.RequestAuthentication(
                            It.Is<Uri>(u => u.ToString().Equals("http://live.com/my/path.cshtml?q=one"))))
                     .Verifiable();

            var client = new MockOAuthClient(webWorker.Object);
            var returnUri = new Uri("http://live.com/my/path.cshtml?q=one");
            var context = new Mock<HttpContextBase>();

            // Act
            client.RequestAuthentication(context.Object, returnUri);

            // Assert
            webWorker.Verify();
        }

        [TestCase]
        public void VerifyAuthenticationFailsIfResponseTokenIsNull()
        {
            // Arrange
            var webWorker = new Mock<IOAuthWebWorker>(MockBehavior.Strict);
            webWorker.Setup(w => w.ProcessUserAuthorization()).Returns((AuthorizedTokenResponse)null);

            var client = new MockOAuthClient(webWorker.Object);
            var context = new Mock<HttpContextBase>();

            // Act
            client.VerifyAuthentication(context.Object);

            // Assert
            webWorker.Verify();
        }

        [TestCase]
        public void VerifyAuthenticationFailsIfAccessTokenIsInvalid()
        {
            // Arrange
            var endpoint = new MessageReceivingEndpoint("http://live.com/path/?a=b", HttpDeliveryMethods.GetRequest);
            var request = new AuthorizedTokenRequest(endpoint, new Version("1.0"));
            var response = new AuthorizedTokenResponse(request)
            {
                AccessToken = "invalid token"
            };

            var webWorker = new Mock<IOAuthWebWorker>(MockBehavior.Strict);
            webWorker.Setup(w => w.ProcessUserAuthorization()).Returns(response).Verifiable();

            var client = new MockOAuthClient(webWorker.Object);
            var context = new Mock<HttpContextBase>();

            // Act
            AuthenticationResult result = client.VerifyAuthentication(context.Object);

            // Assert
            webWorker.Verify();

            Assert.False(result.IsSuccessful);
        }

        [TestCase]
        public void VerifyAuthenticationSucceeds()
        {
            // Arrange
            var endpoint = new MessageReceivingEndpoint("http://live.com/path/?a=b", HttpDeliveryMethods.GetRequest);
            var request = new AuthorizedTokenRequest(endpoint, new Version("1.0"));
            var response = new AuthorizedTokenResponse(request)
                               {
                                   AccessToken = "ok"
                               };

            var webWorker = new Mock<IOAuthWebWorker>(MockBehavior.Strict);
            webWorker.Setup(w => w.ProcessUserAuthorization()).Returns(response).Verifiable();

            var client = new MockOAuthClient(webWorker.Object);
            var context = new Mock<HttpContextBase>();

            // Act
            AuthenticationResult result = client.VerifyAuthentication(context.Object);

            // Assert
            webWorker.Verify();

            Assert.True(result.IsSuccessful);
            Assert.AreEqual("mockoauth", result.Provider);
            Assert.AreEqual("12345", result.ProviderUserId);
            Assert.AreEqual("super", result.UserName);
        }

        private class MockOAuthClient : OAuthClient
        {
            public MockOAuthClient()
                : this(new Mock<IOAuthWebWorker>().Object)
            {
            }

            public MockOAuthClient(IOAuthWebWorker worker) : base("mockoauth", worker)
            {
            }

            protected override AuthenticationResult VerifyAuthenticationCore(AuthorizedTokenResponse response)
            {
                if (response.AccessToken == "ok")
                {
                    return new AuthenticationResult(true, "mockoauth", "12345", "super", response.ExtraData);
                }

                return AuthenticationResult.Failed;
            }
        }
    }
}