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using System;
using System.Web;
using System.Web.Security;
using DotNetOpenAuth.AspNet;
using Moq;
using NUnit.Framework;

namespace DotNetOpenAuth.Test.Web
{
    [TestFixture]
    public class OAuthAuthenticationTickerHelperTest
    {
        [TestCase]
        public void SetAuthenticationTicketSetCookieOnHttpResponseWithPersistentSet()
        {
            SetAuthenticationTicketSetCookieOnHttpResponse(isPersistent: true);
        }

        [TestCase]
        public void SetAuthenticationTicketSetCookieOnHttpResponseWithPersistentNotSet()
        {
            SetAuthenticationTicketSetCookieOnHttpResponse(isPersistent: false);
        }

        [TestCase]
        public void IsOAuthAuthenticationTicketReturnsTrueIfCookieIsPresent()
        {
            // Arrange
            var ticket = new FormsAuthenticationTicket(
                              2,
                              "username",
                              DateTime.Now,
                              DateTime.Now.Add(FormsAuthentication.Timeout),
                              false,
                              "OAuth",
                              FormsAuthentication.FormsCookiePath);

            var cookie = new HttpCookie(name: FormsAuthentication.FormsCookieName,
                                        value: FormsAuthentication.Encrypt(ticket));
            var cookies = new HttpCookieCollection {cookie};

            var context = new Mock<HttpContextBase>();
            context.Setup(c => c.Request.Cookies).Returns(cookies);

            // Act
            bool result = OpenAuthAuthenticationTicketHelper.IsValidAuthenticationTicket(context.Object);

            // Assert
            Assert.IsTrue(result);
        }

        [TestCase]
        public void IsOAuthAuthenticationTicketReturnsFalseIfCookieIsNotPresent()
        {
            // Arrange
            var context = new Mock<HttpContextBase>();
            context.Setup(c => c.Request.Cookies).Returns(new HttpCookieCollection());

            // Act
            bool result = OpenAuthAuthenticationTicketHelper.IsValidAuthenticationTicket(context.Object);

            // Assert
            Assert.IsFalse(result);
        }

        [TestCase]
        public void IsOAuthAuthenticationTicketReturnsFalseIfCookieIsPresentButDoesNotHaveOAuthData()
        {
            // Arrange
            var ticket = new FormsAuthenticationTicket(
                              2,
                              "username",
                              DateTime.Now,
                              DateTime.Now.Add(FormsAuthentication.Timeout),
                              false,
                              null,
                              FormsAuthentication.FormsCookiePath);

            var cookie = new HttpCookie(name: FormsAuthentication.FormsCookieName,
                                        value: FormsAuthentication.Encrypt(ticket));
            var cookies = new HttpCookieCollection { cookie };

            var context = new Mock<HttpContextBase>();
            context.Setup(c => c.Request.Cookies).Returns(cookies);

            // Act
            bool result = OpenAuthAuthenticationTicketHelper.IsValidAuthenticationTicket(context.Object);

            // Assert
            Assert.IsFalse(result);
        }

        [TestCase]
        public void IsOAuthAuthenticationTicketReturnsFalseIfCookieIsPresentButDoesNotHaveCorrectName()
        {
            // Arrange
            var response = new Mock<HttpResponseBase>();

            var ticket = new FormsAuthenticationTicket(
                              2,
                              "username",
                              DateTime.Now,
                              DateTime.Now.Add(FormsAuthentication.Timeout),
                              false,
                              "OAuth",
                              FormsAuthentication.FormsCookiePath);

            var cookie = new HttpCookie(name: "random cookie name",
                                        value: FormsAuthentication.Encrypt(ticket));
            var cookies = new HttpCookieCollection { cookie };

            var context = new Mock<HttpContextBase>();
            context.Setup(c => c.Request.Cookies).Returns(cookies);

            // Act
            bool result = OpenAuthAuthenticationTicketHelper.IsValidAuthenticationTicket(context.Object);

            // Assert
            Assert.IsFalse(result);
        }

        private void SetAuthenticationTicketSetCookieOnHttpResponse(bool isPersistent)
        {
            // Arrange
            var cookies = new HttpCookieCollection();

            var context = new Mock<HttpContextBase>();
            context.Setup(c => c.Request.IsSecureConnection).Returns(true);
            context.Setup(c => c.Response.Cookies).Returns(cookies);

            // Act
            OpenAuthAuthenticationTicketHelper.SetAuthenticationTicket(context.Object, "user", isPersistent);

            // Assert
            Assert.AreEqual(1, cookies.Count);
            HttpCookie addedCookie = cookies[0];

            Assert.AreEqual(FormsAuthentication.FormsCookieName, addedCookie.Name);
            Assert.IsTrue(addedCookie.HttpOnly);
            Assert.AreEqual("/", addedCookie.Path);
            Assert.IsFalse(addedCookie.Secure);
            Assert.IsNotNullOrEmpty(addedCookie.Value);

            FormsAuthenticationTicket ticket = FormsAuthentication.Decrypt(addedCookie.Value);
            Assert.NotNull(ticket);
            Assert.AreEqual(2, ticket.Version);
            Assert.AreEqual("user", ticket.Name);
            Assert.AreEqual("OAuth", ticket.UserData);
            Assert.AreEqual(isPersistent, ticket.IsPersistent);
        }
    }
}