A Moq-using fake HTTP context to test controllers.

fake-http-context.cs

public HttpContextBase FakeHttpContext() {
    var context = new Mock<HttpContextBase>();
    var files = new Mock<HttpFileCollectionBase>();
    var request = new Mock<HttpRequestBase>();
    var response = new Mock<HttpResponseBase>();
    var session = new Mock<HttpSessionStateBase>();
    var server = new Mock<HttpServerUtilityBase>();
    var user = new Mock<IPrincipal>();
    var identity = new Mock<IIdentity>();
    request.Setup(req => req.ApplicationPath).Returns("~/");
    request.Setup(req => req.AppRelativeCurrentExecutionFilePath).Returns("~/");
    request.Setup(req => req.PathInfo).Returns(string.Empty);
    request.Setup(req => req.Form).Returns(new NameValueCollection());
    request.Setup(req => req.QueryString).Returns(new NameValueCollection());
    request.Setup(req => req.Files).Returns(files.Object);
    response.Setup(res => res.ApplyAppPathModifier(It.IsAny<string>())).
        Returns((string virtualPath) => virtualPath);
    user.Setup(usr => usr.Identity).Returns(identity.Object);
    identity.SetupGet(ident => ident.IsAuthenticated).Returns(true);
    
    context.Setup(ctx => ctx.Request).Returns(request.Object);
    context.Setup(ctx => ctx.Response).Returns(response.Object);
    context.Setup(ctx => ctx.Session).Returns(session.Object);
    context.Setup(ctx => ctx.Server).Returns(server.Object);
    context.Setup(ctx => ctx.User).Returns(user.Object);
    
    return context.Object;
}