// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.

using System.Net;
using System.Net.Http;
using Microsoft.AspNetCore.Hosting;
using Newtonsoft.Json;

namespace Microsoft.AspNetCore.Mvc.FunctionalTests;

public abstract class RoutingTestsBase<TStartup> : IClassFixture<MvcTestFixture<TStartup>> where TStartup : class
{
    protected RoutingTestsBase(MvcTestFixture<TStartup> fixture)
    {
        var factory = fixture.Factories.FirstOrDefault() ?? fixture.WithWebHostBuilder(ConfigureWebHostBuilder);
        Client = factory.CreateDefaultClient();
    }

    private static void ConfigureWebHostBuilder(IWebHostBuilder builder) =>
        builder.UseStartup<TStartup>();

    public HttpClient Client { get; }

    [Theory]
    [InlineData("http://localhost/Login/Index", "Login", "Index", "http://localhost/Login")]
    [InlineData("http://localhost/Login/Sso", "Login", "Sso", "http://localhost/Login/Sso")]
    [InlineData("http://localhost/Contact/Index", "Contact", "Index", "http://localhost/Contact")]
    [InlineData("http://localhost/Contact/Sso", "Contact", "Sso", "http://localhost/Contact/Sso")]
    public async Task ConventionalRoutedAction_RouteUrl_AmbientValues(string requestUrl, string controller, string action, string expectedUrl)
    {
        // Arrange & Act
        var response = await Client.GetAsync(requestUrl);

        // Assert
        Assert.Equal(HttpStatusCode.OK, response.StatusCode);

        var body = await response.Content.ReadAsStringAsync();
        var result = JsonConvert.DeserializeObject<RoutingResult>(body);

        Assert.Equal(controller, result.Controller);
        Assert.Equal(action, result.Action);

        Assert.Equal(expectedUrl, Assert.Single(result.ExpectedUrls));
    }

    [Fact]
    public async Task ConventionalRoutedAction_RouteHasNonParameterConstraint_RouteConstraintRun_Allowed()
    {
        // Arrange & Act
        var response = await Client.GetAsync("http://localhost/NonParameterConstraintRoute/NonParameterConstraint/Index?allowed=true");

        // Assert
        Assert.Equal(HttpStatusCode.OK, response.StatusCode);

        var body = await response.Content.ReadAsStringAsync();
        var result = JsonConvert.DeserializeObject<RoutingResult>(body);

        Assert.Equal("NonParameterConstraint", result.Controller);
        Assert.Equal("Index", result.Action);
    }

    [Fact]
    public async Task ConventionalRoutedAction_RouteHasNonParameterConstraint_RouteConstraintRun_Denied()
    {
        // Arrange & Act
        var response = await Client.GetAsync("http://localhost/NonParameterConstraintRoute/NonParameterConstraint/Index?allowed=false");

        // Assert
        Assert.Equal(HttpStatusCode.NotFound, response.StatusCode);
    }

    [Fact]
    public async Task ConventionalRoutedAction_RouteContainsPage_RouteNotMatched()
    {
        // Arrange & Act
        var response = await Client.GetAsync("http://localhost/PageRoute/ConventionalRoute/pagevalue");

        // Assert
        Assert.Equal(HttpStatusCode.OK, response.StatusCode);

        var body = await response.Content.ReadAsStringAsync();
        var result = JsonConvert.DeserializeObject<RoutingResult>(body);

        Assert.Equal("PageRoute", result.Controller);
        Assert.Equal("ConventionalRoute", result.Action);

        // pagevalue is not used in "page" route value because it is a required value
        Assert.False(result.RouteValues.ContainsKey("page"));
    }

    [Fact]
    public async Task AttributeRoutedAction_InArea_StaysInArea_ActionDoesntExist()
    {
        // Arrange
        var url = LinkFrom("http://localhost/ContosoCorp/Trains")
            .To(new { action = "Contact", controller = "Home", });

        // Act
        var response = await Client.GetAsync(url);

        // Assert
        Assert.Equal(HttpStatusCode.OK, response.StatusCode);
        var body = await response.Content.ReadAsStringAsync();
        var result = JsonConvert.DeserializeObject<RoutingResult>(body);

        Assert.Equal("Rail", result.Controller);
        Assert.Equal("Index", result.Action);

        Assert.Equal("/Travel/Home/Contact", result.Link);
    }

    [Fact]
    public async Task ConventionalRoutedAction_InArea_StaysInArea()
    {
        // Arrange
        var url = LinkFrom("http://localhost/Travel/Flight").To(new { action = "Contact", controller = "Home", });

        // Act
        var response = await Client.GetAsync(url);

        // Assert
        Assert.Equal(HttpStatusCode.OK, response.StatusCode);
        var body = await response.Content.ReadAsStringAsync();
        var result = JsonConvert.DeserializeObject<RoutingResult>(body);

        Assert.Equal("Flight", result.Controller);
        Assert.Equal("Index", result.Action);

        Assert.Equal("/Travel/Home/Contact", result.Link);
    }

    [Fact]
    public abstract Task HasEndpointMatch();

    [Fact]
    public abstract Task RouteData_Routers_ConventionalRoute();

    [Fact]
    public abstract Task RouteData_Routers_AttributeRoute();

    // Verifies that components in the MVC pipeline can modify datatokens
    // without impacting any static data.
    //
    // This does two request, to verify that the data in the route is not modified
    [Fact]
    public async Task RouteData_DataTokens_FilterCanSetDataTokens()
    {
        // Arrange
        var response = await Client.GetAsync("http://localhost/RouteData/DataTokens");

        // Guard
        var body = await response.Content.ReadAsStringAsync();
        var result = JsonConvert.DeserializeObject<ResultData>(body);
        Assert.Single(result.DataTokens);
        Assert.Single(result.DataTokens, kvp => kvp.Key == "actionName" && ((string)kvp.Value) == "DataTokens");

        // Act
        response = await Client.GetAsync("http://localhost/RouteData/Conventional");

        // Assert
        Assert.Equal(HttpStatusCode.OK, response.StatusCode);

        body = await response.Content.ReadAsStringAsync();
        result = JsonConvert.DeserializeObject<ResultData>(body);

        Assert.Single(result.DataTokens);
        Assert.Single(result.DataTokens, kvp => kvp.Key == "actionName" && ((string)kvp.Value) == "Conventional");
    }

    protected class ResultData
    {
        public Dictionary<string, object> DataTokens { get; set; }

        public string[] Routers { get; set; }
    }

    [Fact]
    public async Task DataTokens_ReturnsDataTokensForRoute()
    {
        // Arrange & Act
        var response = await Client.GetAsync("http://localhost/DataTokensRoute/DataTokens/Index");

        // Assert
        var body = await response.Content.ReadAsStringAsync();
        var result = JsonConvert.DeserializeObject<Dictionary<string, object>>(body);
        Assert.Single(result, kvp => kvp.Key == "hasDataTokens" && ((bool)kvp.Value) == true);
    }

    [Fact]
    public async Task DataTokens_ReturnsNoDataTokensForRoute()
    {
        // Arrange & Act
        var response = await Client.GetAsync("http://localhost/DataTokens/Index");

        // Assert
        var body = await response.Content.ReadAsStringAsync();
        var result = JsonConvert.DeserializeObject<Dictionary<string, object>>(body);
        Assert.Empty(result);
    }

    [Fact]
    public async Task Page_PageRouteTransformer()
    {
        // Arrange & Act
        var response = await Client.GetAsync("http://localhost/page-route-transformer/index");

        // Assert
        Assert.Equal(HttpStatusCode.OK, response.StatusCode);
    }

    [Fact]
    public async Task Page_PageRouteTransformer_WithoutIndex()
    {
        // Arrange & Act
        var response = await Client.GetAsync("http://localhost/page-route-transformer");

        // Assert
        Assert.Equal(HttpStatusCode.OK, response.StatusCode);
    }

    [Fact]
    public async Task Page_PageRouteTransformer_RouteParameter()
    {
        // Arrange & Act
        var response = await Client.GetAsync("http://localhost/page-route-transformer/test-page/ExtraPath/World");

        // Assert
        Assert.Equal(HttpStatusCode.OK, response.StatusCode);
        var body = await response.Content.ReadAsStringAsync();
        Assert.Equal("Hello from World", body);
    }

    [Fact]
    public async Task Page_PageRouteTransformer_PageWithConfiguredRoute()
    {
        // Arrange & Act
        var response = await Client.GetAsync("http://localhost/PageRouteTransformer/NewConventionRoute/World");

        // Assert
        Assert.Equal(HttpStatusCode.OK, response.StatusCode);
        var body = await response.Content.ReadAsStringAsync();
        Assert.Equal("Hello from World", body);
    }

    [Fact]
    public virtual async Task ConventionalRoutedController_ActionIsReachable()
    {
        // Arrange & Act
        var response = await Client.GetAsync("http://localhost/Home/Index");

        // Assert
        Assert.Equal(HttpStatusCode.OK, response.StatusCode);

        var body = await response.Content.ReadAsStringAsync();
        var result = JsonConvert.DeserializeObject<RoutingResult>(body);

        Assert.Contains("/Home/Index", result.ExpectedUrls);
        Assert.Equal("Home", result.Controller);
        Assert.Equal("Index", result.Action);
        Assert.Equal(
            new Dictionary<string, object>(StringComparer.OrdinalIgnoreCase)
            {
                    { "controller", "Home" },
                    { "action", "Index" },
            },
            result.RouteValues);
    }

    [Fact]
    public virtual async Task ConventionalRoutedController_ActionIsReachable_WithDefaults()
    {
        // Arrange & Act
        var response = await Client.GetAsync("http://localhost/");

        // Assert
        Assert.Equal(HttpStatusCode.OK, response.StatusCode);

        var body = await response.Content.ReadAsStringAsync();
        var result = JsonConvert.DeserializeObject<RoutingResult>(body);

        Assert.Contains("/", result.ExpectedUrls);
        Assert.Equal("Home", result.Controller);
        Assert.Equal("Index", result.Action);
        Assert.Equal(
            new Dictionary<string, object>(StringComparer.OrdinalIgnoreCase)
            {
                    { "controller", "Home" },
                    { "action", "Index" },
            },
            result.RouteValues);
    }

    [Fact]
    public virtual async Task ConventionalRoutedController_NonActionIsNotReachable()
    {
        // Arrange & Act
        var response = await Client.GetAsync("http://localhost/Home/NotAnAction");

        // Assert
        Assert.Equal(HttpStatusCode.NotFound, response.StatusCode);
    }

    [Fact]
    public virtual async Task ConventionalRoutedController_InArea_ActionIsReachable()
    {
        // Arrange & Act
        var response = await Client.GetAsync("http://localhost/Travel/Flight/Index");

        // Assert
        Assert.Equal(HttpStatusCode.OK, response.StatusCode);

        var body = await response.Content.ReadAsStringAsync();
        var result = JsonConvert.DeserializeObject<RoutingResult>(body);

        Assert.Contains("/Travel/Flight/Index", result.ExpectedUrls);
        Assert.Equal("Flight", result.Controller);
        Assert.Equal("Index", result.Action);
        Assert.Equal(
            new Dictionary<string, object>(StringComparer.OrdinalIgnoreCase)
            {
                    { "area", "Travel" },
                    { "controller", "Flight" },
                    { "action", "Index" },
            },
            result.RouteValues);
    }

    [Fact]
    public virtual async Task ConventionalRoutedController_InArea_ActionBlockedByHttpMethod()
    {
        // Arrange & Act
        var response = await Client.GetAsync("http://localhost/Travel/Flight/BuyTickets");

        // Assert
        Assert.Equal(HttpStatusCode.NotFound, response.StatusCode);
    }

    [Theory]
    [InlineData("", "/Home/OptionalPath/default")]
    [InlineData("CustomPath", "/Home/OptionalPath/CustomPath")]
    public virtual async Task ConventionalRoutedController_WithOptionalSegment(string optionalSegment, string expected)
    {
        // Arrange & Act
        var response = await Client.GetAsync("http://localhost/Home/OptionalPath/" + optionalSegment);

        // Assert
        Assert.Equal(HttpStatusCode.OK, response.StatusCode);

        var body = await response.Content.ReadAsStringAsync();
        var result = JsonConvert.DeserializeObject<RoutingResult>(body);

        Assert.Single(result.ExpectedUrls, expected);
    }

    [Fact]
    public async Task AttributeRoutedAction_IsReachable()
    {
        // Arrange & Act
        var response = await Client.GetAsync("http://localhost/Store/Shop/Products");

        // Assert
        Assert.Equal(HttpStatusCode.OK, response.StatusCode);

        var body = await response.Content.ReadAsStringAsync();
        var result = JsonConvert.DeserializeObject<RoutingResult>(body);

        Assert.Contains("/Store/Shop/Products", result.ExpectedUrls);
        Assert.Equal("Store", result.Controller);
        Assert.Equal("ListProducts", result.Action);

        Assert.Contains(
            new KeyValuePair<string, object>("controller", "Store"),
            result.RouteValues);

        Assert.Contains(
            new KeyValuePair<string, object>("action", "ListProducts"),
            result.RouteValues);
    }

    [Theory]
    [InlineData("Get", "/Friends")]
    [InlineData("Get", "/Friends/Peter")]
    [InlineData("Delete", "/Friends")]
    public async Task AttributeRoutedAction_AcceptRequestsWithValidMethods_InRoutesWithoutExtraTemplateSegmentsOnTheAction(
        string method,
        string url)
    {
        // Arrange
        var request = new HttpRequestMessage(new HttpMethod(method), $"http://localhost{url}");

        // Assert
        var response = await Client.SendAsync(request);

        // Assert
        Assert.Equal(HttpStatusCode.OK, response.StatusCode);

        var body = await response.Content.ReadAsStringAsync();
        var result = JsonConvert.DeserializeObject<RoutingResult>(body);

        Assert.Contains(url, result.ExpectedUrls);
        Assert.Equal("Friends", result.Controller);
        Assert.Equal(method, result.Action);

        Assert.Contains(
            new KeyValuePair<string, object>("controller", "Friends"),
            result.RouteValues);

        Assert.Contains(
            new KeyValuePair<string, object>("action", method),
            result.RouteValues);

        if (result.RouteValues.ContainsKey("id"))
        {
            Assert.Contains(
                new KeyValuePair<string, object>("id", "Peter"),
                result.RouteValues);
        }
    }

    public static TheoryData<string, string> AttributeRoutedAction_RejectsRequestsWithWrongMethods_InRoutesWithoutExtraTemplateSegmentsOnTheActionData
    {
        get
        {
            return new TheoryData<string, string>
                {
                    { "Post", "/Friends" },
                    { "Put", "/Friends" },
                    { "Patch", "/Friends" },
                    { "Options", "/Friends" },
                    { "Head", "/Friends" },
                };
        }
    }

    [Theory]
    [MemberData(nameof(AttributeRoutedAction_RejectsRequestsWithWrongMethods_InRoutesWithoutExtraTemplateSegmentsOnTheActionData))]
    public virtual async Task AttributeRoutedAction_RejectsRequestsWithWrongMethods_InRoutesWithoutExtraTemplateSegmentsOnTheAction(
        string method,
        string url)
    {
        // Arrange
        var request = new HttpRequestMessage(new HttpMethod(method), $"http://localhost{url}");

        // Assert
        var response = await Client.SendAsync(request);

        // Assert
        AssertCorsRejectionStatusCode(response);
    }

    [Theory]
    [InlineData("http://localhost/api/v1/Maps")]
    [InlineData("http://localhost/api/v2/Maps")]
    public virtual async Task AttributeRoutedAction_MultipleRouteAttributes_WorksWithNameAndOrder(string url)
    {
        // Arrange & Act
        var response = await Client.GetAsync(url);

        // Assert
        Assert.Equal(HttpStatusCode.OK, response.StatusCode);

        var body = await response.Content.ReadAsStringAsync();
        var result = JsonConvert.DeserializeObject<RoutingResult>(body);

        Assert.Equal("Maps", result.Controller);
        Assert.Equal("Get", result.Action);

        Assert.Equal(new string[]
        {
                    "/api/v2/Maps",
                    "/api/v1/Maps",
                    "/api/v2/Maps"
        },
        result.ExpectedUrls);
    }

    [Fact]
    public virtual async Task AttributeRoutedAction_MultipleRouteAttributes_WorksWithOverrideRoutes()
    {
        // Arrange
        var url = "http://localhost/api/v2/Maps";

        // Act
        var response = await Client.SendAsync(new HttpRequestMessage(HttpMethod.Post, url));

        // Assert
        Assert.Equal(HttpStatusCode.OK, response.StatusCode);

        var body = await response.Content.ReadAsStringAsync();
        var result = JsonConvert.DeserializeObject<RoutingResult>(body);

        Assert.Equal("Maps", result.Controller);
        Assert.Equal("Post", result.Action);

        Assert.Equal(new string[]
        {
                    "/api/v2/Maps",
                    "/api/v2/Maps"
        },
        result.ExpectedUrls);
    }

    [Fact]
    public virtual async Task AttributeRoutedAction_MultipleRouteAttributes_RouteAttributeTemplatesIgnoredForOverrideActions()
    {
        // Arrange
        var url = "http://localhost/api/v1/Maps";

        // Act
        var response = await Client.SendAsync(new HttpRequestMessage(new HttpMethod("POST"), url));

        // Assert
        Assert.Equal(HttpStatusCode.MethodNotAllowed, response.StatusCode);
    }

    [Theory]
    [InlineData("http://localhost/api/v1/Maps/5", "PUT")]
    [InlineData("http://localhost/api/v2/Maps/5", "PUT")]
    [InlineData("http://localhost/api/v1/Maps/PartialUpdate/5", "PATCH")]
    [InlineData("http://localhost/api/v2/Maps/PartialUpdate/5", "PATCH")]
    public virtual async Task AttributeRoutedAction_MultipleRouteAttributes_CombinesWithMultipleHttpAttributes(
        string url,
        string method)
    {
        // Arrange & Act
        var response = await Client.SendAsync(new HttpRequestMessage(new HttpMethod(method), url));

        // Assert
        Assert.Equal(HttpStatusCode.OK, response.StatusCode);

        var body = await response.Content.ReadAsStringAsync();
        var result = JsonConvert.DeserializeObject<RoutingResult>(body);

        Assert.Equal("Maps", result.Controller);
        Assert.Equal("Update", result.Action);

        Assert.Equal(new string[]
        {
                    "/api/v2/Maps/PartialUpdate/5",
                    "/api/v2/Maps/PartialUpdate/5"
        },
        result.ExpectedUrls);
    }

    [Theory]
    [InlineData("http://localhost/Banks/Get/5")]
    [InlineData("http://localhost/Bank/Get/5")]
    public virtual async Task AttributeRoutedAction_MultipleHttpAttributesAndTokenReplacement(string url)
    {
        // Arrange
        var expectedUrl = new Uri(url).AbsolutePath;

        // Act
        var response = await Client.GetAsync(url);

        // Assert
        Assert.Equal(HttpStatusCode.OK, response.StatusCode);

        var body = await response.Content.ReadAsStringAsync();
        var result = JsonConvert.DeserializeObject<RoutingResult>(body);

        Assert.Equal("Banks", result.Controller);
        Assert.Equal("Get", result.Action);

        Assert.Equal(new string[]
        {
                    "/Bank/Get/5",
                    "/Bank/Get/5"
        },
        result.ExpectedUrls);
    }

    public static TheoryData<string, string> AttributeRoutedAction_MultipleRouteAttributes_WithMultipleHttpAttributes_RespectsConstraintsData
    {
        get
        {
            return new TheoryData<string, string>
                {
                    { "http://localhost/api/v1/Maps/5", "PATCH" },
                    { "http://localhost/api/v2/Maps/5", "PATCH" },
                    { "http://localhost/api/v1/Maps/PartialUpdate/5", "PUT" },
                    { "http://localhost/api/v2/Maps/PartialUpdate/5", "PUT" },
                };
        }
    }

    [Theory]
    [MemberData(nameof(AttributeRoutedAction_MultipleRouteAttributes_WithMultipleHttpAttributes_RespectsConstraintsData))]
    public virtual async Task AttributeRoutedAction_MultipleRouteAttributes_WithMultipleHttpAttributes_RespectsConstraints(
        string url,
        string method)
    {
        // Arrange
        var expectedUrl = new Uri(url).AbsolutePath;

        // Act
        var response = await Client.SendAsync(new HttpRequestMessage(new HttpMethod(method), url));

        // Assert
        AssertCorsRejectionStatusCode(response);
    }

    // The url would be /Store/ListProducts with conventional routes
    [Fact]
    public async Task AttributeRoutedAction_IsNotReachableWithTraditionalRoute()
    {
        // Arrange & Act
        var response = await Client.GetAsync("http://localhost/Store/ListProducts");

        // Assert
        Assert.Equal(HttpStatusCode.NotFound, response.StatusCode);
    }

    // There's two actions at this URL - but attribute routes go in the route table
    // first.
    [Fact]
    public async Task AttributeRoutedAction_TriedBeforeConventionalRouting()
    {
        // Arrange & Act
        var response = await Client.GetAsync("http://localhost/Home/About");

        // Assert
        Assert.Equal(HttpStatusCode.OK, response.StatusCode);

        var body = await response.Content.ReadAsStringAsync();
        var result = JsonConvert.DeserializeObject<RoutingResult>(body);

        Assert.Contains("/Home/About", result.ExpectedUrls);
        Assert.Equal("Store", result.Controller);
        Assert.Equal("About", result.Action);
    }

    [Fact]
    public async Task AttributeRoutedAction_ControllerLevelRoute_WithActionParameter_IsReachable()
    {
        // Arrange & Act
        var response = await Client.GetAsync("http://localhost/Blog/Edit/5");

        // Assert
        Assert.Equal(HttpStatusCode.OK, response.StatusCode);

        var body = await response.Content.ReadAsStringAsync();
        var result = JsonConvert.DeserializeObject<RoutingResult>(body);

        Assert.Contains("/Blog/Edit/5", result.ExpectedUrls);
        Assert.Equal("Blog", result.Controller);
        Assert.Equal("Edit", result.Action);

        Assert.Contains(
            new KeyValuePair<string, object>("controller", "Blog"),
            result.RouteValues);

        Assert.Contains(
            new KeyValuePair<string, object>("action", "Edit"),
            result.RouteValues);

        Assert.Contains(
            new KeyValuePair<string, object>("postId", "5"),
            result.RouteValues);
    }

    // There's no [HttpGet] on the action here.
    [Fact]
    public async Task AttributeRoutedAction_ControllerLevelRoute_IsReachable()
    {
        // Arrange & Act
        var response = await Client.GetAsync("http://localhost/api/Employee");

        // Assert
        Assert.Equal(HttpStatusCode.OK, response.StatusCode);

        var body = await response.Content.ReadAsStringAsync();
        var result = JsonConvert.DeserializeObject<RoutingResult>(body);

        Assert.Contains("/api/Employee", result.ExpectedUrls);
        Assert.Equal("Employee", result.Controller);
        Assert.Equal("List", result.Action);
    }

    // We are intentionally skipping GET because we have another method with [HttpGet] on the same controller
    // and a test that verifies that if you define another action with a specific verb we'll route to that
    // more specific action.
    [Theory]
    [InlineData("PUT")]
    [InlineData("POST")]
    [InlineData("PATCH")]
    [InlineData("DELETE")]
    public async Task AttributeRoutedAction_RouteAttributeOnAction_IsReachable(string method)
    {
        // Arrange
        var message = new HttpRequestMessage(new HttpMethod(method), "http://localhost/Store/Shop/Orders");

        // Act
        var response = await Client.SendAsync(message);

        // Assert
        Assert.Equal(HttpStatusCode.OK, response.StatusCode);

        var body = await response.Content.ReadAsStringAsync();
        var result = JsonConvert.DeserializeObject<RoutingResult>(body);

        Assert.Contains("/Store/Shop/Orders", result.ExpectedUrls);
        Assert.Equal("Store", result.Controller);
        Assert.Equal("Orders", result.Action);
    }

    [Theory]
    [InlineData("GET")]
    [InlineData("POST")]
    [InlineData("PUT")]
    [InlineData("PATCH")]
    [InlineData("DELETE")]
    public async Task AttributeRoutedAction_RouteAttributeOnActionAndController_IsReachable(string method)
    {
        // Arrange
        var message = new HttpRequestMessage(new HttpMethod(method), "http://localhost/api/Employee/5/Salary");

        // Act
        var response = await Client.SendAsync(message);

        // Assert
        Assert.Equal(HttpStatusCode.OK, response.StatusCode);

        var body = await response.Content.ReadAsStringAsync();
        var result = JsonConvert.DeserializeObject<RoutingResult>(body);

        Assert.Contains("/api/Employee/5/Salary", result.ExpectedUrls);
        Assert.Equal("Employee", result.Controller);
        Assert.Equal("Salary", result.Action);
    }

    [Fact]
    public async Task AttributeRoutedAction_RouteAttributeOnActionAndHttpGetOnDifferentAction_ReachesHttpGetAction()
    {
        // Arrange
        var message = new HttpRequestMessage(HttpMethod.Get, "http://localhost/Store/Shop/Orders");

        // Act
        var response = await Client.SendAsync(message);

        // Assert
        Assert.Equal(HttpStatusCode.OK, response.StatusCode);

        var body = await response.Content.ReadAsStringAsync();
        var result = JsonConvert.DeserializeObject<RoutingResult>(body);

        Assert.Contains("/Store/Shop/Orders", result.ExpectedUrls);
        Assert.Equal("Store", result.Controller);
        Assert.Equal("GetOrders", result.Action);
    }

    // There's no [HttpGet] on the action here.
    [Theory]
    [InlineData("PUT")]
    [InlineData("PATCH")]
    public async Task AttributeRoutedAction_ControllerLevelRoute_WithAcceptVerbs_IsReachable(string verb)
    {
        // Arrange
        var message = new HttpRequestMessage(new HttpMethod(verb), "http://localhost/api/Employee");

        // Act
        var response = await Client.SendAsync(message);

        // Assert
        Assert.Equal(HttpStatusCode.OK, response.StatusCode);

        var body = await response.Content.ReadAsStringAsync();
        var result = JsonConvert.DeserializeObject<RoutingResult>(body);

        Assert.Contains("/api/Employee", result.ExpectedUrls);
        Assert.Equal("Employee", result.Controller);
        Assert.Equal("UpdateEmployee", result.Action);
    }

    [Theory]
    [InlineData("PUT")]
    [InlineData("PATCH")]
    public async Task AttributeRoutedAction_ControllerLevelRoute_WithAcceptVerbsAndRouteTemplate_IsReachable(string verb)
    {
        // Arrange
        var message = new HttpRequestMessage(new HttpMethod(verb), "http://localhost/api/Employee/Manager");

        // Act
        var response = await Client.SendAsync(message);

        // Assert
        Assert.Equal(HttpStatusCode.OK, response.StatusCode);

        var body = await response.Content.ReadAsStringAsync();
        var result = JsonConvert.DeserializeObject<RoutingResult>(body);

        Assert.Contains("/api/Employee/Manager", result.ExpectedUrls);
        Assert.Equal("Employee", result.Controller);
        Assert.Equal("UpdateManager", result.Action);
    }

    [Theory]
    [InlineData("PUT", "Bank")]
    [InlineData("PATCH", "Bank")]
    [InlineData("PUT", "Bank/Update")]
    [InlineData("PATCH", "Bank/Update")]
    public virtual async Task AttributeRoutedAction_AcceptVerbsAndRouteTemplate_IsReachable(string verb, string path)
    {
        // Arrange
        var expectedUrl = "/Bank/Update";
        var message = new HttpRequestMessage(new HttpMethod(verb), "http://localhost/" + path);

        // Act
        var response = await Client.SendAsync(message);

        // Assert
        Assert.Equal(HttpStatusCode.OK, response.StatusCode);

        var body = await response.Content.ReadAsStringAsync();
        var result = JsonConvert.DeserializeObject<RoutingResult>(body);

        Assert.Equal(new string[] { expectedUrl, expectedUrl }, result.ExpectedUrls);
        Assert.Equal("Banks", result.Controller);
        Assert.Equal("UpdateBank", result.Action);
    }

    [Fact]
    public async Task AttributeRoutedAction_WithCustomHttpAttributes_IsReachable()
    {
        // Arrange
        var message = new HttpRequestMessage(new HttpMethod("MERGE"), "http://localhost/api/Employee/5");

        // Act
        var response = await Client.SendAsync(message);

        // Assert
        Assert.Equal(HttpStatusCode.OK, response.StatusCode);

        var body = await response.Content.ReadAsStringAsync();
        var result = JsonConvert.DeserializeObject<RoutingResult>(body);

        Assert.Contains("/api/Employee/5", result.ExpectedUrls);
        Assert.Equal("Employee", result.Controller);
        Assert.Equal("MergeEmployee", result.Action);
    }

    // There's an [HttpGet] with its own template on the action here.
    [Theory]
    [InlineData("GET", "GetAdministrator")]
    [InlineData("DELETE", "DeleteAdministrator")]
    public async Task AttributeRoutedAction_ControllerLevelRoute_CombinedWithActionRoute_IsReachable(string verb, string action)
    {
        // Arrange
        var message = new HttpRequestMessage(new HttpMethod(verb), "http://localhost/api/Employee/5/Administrator");

        // Act
        var response = await Client.SendAsync(message);

        // Assert
        Assert.Equal(HttpStatusCode.OK, response.StatusCode);

        var body = await response.Content.ReadAsStringAsync();
        var result = JsonConvert.DeserializeObject<RoutingResult>(body);

        Assert.Contains("/api/Employee/5/Administrator", result.ExpectedUrls);
        Assert.Equal("Employee", result.Controller);
        Assert.Equal(action, result.Action);

        Assert.Contains(
            new KeyValuePair<string, object>("id", "5"),
            result.RouteValues);
    }

    [Fact]
    public async Task AttributeRoutedAction_ActionLevelRouteWithTildeSlash_OverridesControllerLevelRoute()
    {
        // Arrange & Act
        var response = await Client.GetAsync("http://localhost/Manager/5");

        // Assert
        Assert.Equal(HttpStatusCode.OK, response.StatusCode);

        var body = await response.Content.ReadAsStringAsync();
        var result = JsonConvert.DeserializeObject<RoutingResult>(body);

        Assert.Contains("/Manager/5", result.ExpectedUrls);
        Assert.Equal("Employee", result.Controller);
        Assert.Equal("GetManager", result.Action);

        Assert.Contains(
            new KeyValuePair<string, object>("id", "5"),
            result.RouteValues);
    }

    [Fact]
    public async Task AttributeRoutedAction_OverrideActionOverridesOrderOnController()
    {
        // Arrange & Act
        var response = await Client.GetAsync("http://localhost/Team/5");

        // Assert
        Assert.Equal(HttpStatusCode.OK, response.StatusCode);

        var body = await response.Content.ReadAsStringAsync();
        var result = JsonConvert.DeserializeObject<RoutingResult>(body);

        Assert.Contains("/Team/5", result.ExpectedUrls);
        Assert.Equal("Team", result.Controller);
        Assert.Equal("GetOrganization", result.Action);

        Assert.Contains(
            new KeyValuePair<string, object>("teamId", "5"),
            result.RouteValues);
    }

    [Fact]
    public async Task AttributeRoutedAction_OrderOnActionOverridesOrderOnController()
    {
        // Arrange & Act
        var response = await Client.GetAsync("http://localhost/Teams");

        // Assert
        Assert.Equal(HttpStatusCode.OK, response.StatusCode);

        var body = await response.Content.ReadAsStringAsync();
        var result = JsonConvert.DeserializeObject<RoutingResult>(body);

        Assert.Contains("/Teams", result.ExpectedUrls);
        Assert.Equal("Team", result.Controller);
        Assert.Equal("GetOrganizations", result.Action);
    }

    [Fact]
    public virtual async Task AttributeRoutedAction_LinkGeneration_OverrideActionOverridesOrderOnController()
    {
        // Arrange & Act
        var response = await Client.GetStringAsync("http://localhost/Organization/5");

        // Assert
        Assert.NotNull(response);
        Assert.Equal("/Club/5", response);
    }

    [Fact]
    public virtual async Task AttributeRoutedAction_LinkGeneration_OrderOnActionOverridesOrderOnController()
    {
        // Arrange & Act
        var response = await Client.GetStringAsync("http://localhost/Teams/AllTeams");

        // Assert
        Assert.NotNull(response);
        Assert.Equal("/Teams/AllOrganizations", response);
    }

    [Theory]
    [InlineData("", "/TeamName/DefaultName")]
    [InlineData("CustomName", "/TeamName/CustomName")]
    public virtual async Task AttributeRoutedAction_PreservesDefaultValue_IfRouteValueIsNull(string teamName, string expected)
    {
        // Arrange & Act
        var body = await Client.GetStringAsync("http://localhost/TeamName/" + teamName);

        // Assert
        Assert.NotNull(body);
        var result = JsonConvert.DeserializeObject<RoutingResult>(body);
        Assert.Single(result.ExpectedUrls, expected);
    }

    [Fact]
    public virtual async Task AttributeRoutedAction_LinkToSelf()
    {
        // Arrange
        var url = LinkFrom("http://localhost/api/Employee").To(new { });

        // Act
        var response = await Client.GetAsync(url);

        // Assert
        Assert.Equal(HttpStatusCode.OK, response.StatusCode);
        var body = await response.Content.ReadAsStringAsync();
        var result = JsonConvert.DeserializeObject<RoutingResult>(body);

        Assert.Equal("Employee", result.Controller);
        Assert.Equal("List", result.Action);

        Assert.Equal("/api/Employee", result.Link);
    }

    [Fact]
    public virtual async Task AttributeRoutedAction_LinkWithAmbientController()
    {
        // Arrange
        var url = LinkFrom("http://localhost/api/Employee").To(new { action = "Get", id = 5 });

        // Act
        var response = await Client.GetAsync(url);

        // Assert
        Assert.Equal(HttpStatusCode.OK, response.StatusCode);
        var body = await response.Content.ReadAsStringAsync();
        var result = JsonConvert.DeserializeObject<RoutingResult>(body);

        Assert.Equal("Employee", result.Controller);
        Assert.Equal("List", result.Action);

        Assert.Equal("/api/Employee/5", result.Link);
    }

    [Fact]
    public virtual async Task AttributeRoutedAction_LinkToAttributeRoutedController()
    {
        // Arrange
        var url = LinkFrom("http://localhost/api/Employee").To(new { action = "ShowPosts", controller = "Blog" });

        // Act
        var response = await Client.GetAsync(url);

        // Assert
        Assert.Equal(HttpStatusCode.OK, response.StatusCode);
        var body = await response.Content.ReadAsStringAsync();
        var result = JsonConvert.DeserializeObject<RoutingResult>(body);

        Assert.Equal("Employee", result.Controller);
        Assert.Equal("List", result.Action);

        Assert.Equal("/Blog/ShowPosts", result.Link);
    }

    [Fact]
    public virtual async Task AttributeRoutedAction_LinkToConventionalController()
    {
        // Arrange
        var url = LinkFrom("http://localhost/api/Employee").To(new { action = "Index", controller = "Home" });

        // Act
        var response = await Client.GetAsync(url);

        // Assert
        Assert.Equal(HttpStatusCode.OK, response.StatusCode);
        var body = await response.Content.ReadAsStringAsync();
        var result = JsonConvert.DeserializeObject<RoutingResult>(body);

        Assert.Equal("Employee", result.Controller);
        Assert.Equal("List", result.Action);

        Assert.Equal("/", result.Link);
    }

    [Theory]
    [InlineData("GET", "Get")]
    [InlineData("PUT", "Put")]
    public virtual async Task AttributeRoutedAction_LinkWithName_WithNameInheritedFromControllerRoute(
        string method,
        string actionName)
    {
        // Arrange
        var message = new HttpRequestMessage(new HttpMethod(method), "http://localhost/api/Company/5");

        // Act
        var response = await Client.SendAsync(message);

        // Assert
        Assert.Equal(HttpStatusCode.OK, response.StatusCode);
        var body = await response.Content.ReadAsStringAsync();
        var result = JsonConvert.DeserializeObject<RoutingResult>(body);

        Assert.Equal("Company", result.Controller);
        Assert.Equal(actionName, result.Action);

        Assert.Equal("/api/Company/5", result.ExpectedUrls.Single());
        Assert.Equal("Company", result.RouteName);
    }

    [Fact]
    public virtual async Task AttributeRoutedAction_LinkWithName_WithNameOverridenFromController()
    {
        // Arrange & Act
        var response = await Client.DeleteAsync("http://localhost/api/Company/5");

        // Assert
        Assert.Equal(HttpStatusCode.OK, response.StatusCode);
        var body = await response.Content.ReadAsStringAsync();
        var result = JsonConvert.DeserializeObject<RoutingResult>(body);

        Assert.Equal("Company", result.Controller);
        Assert.Equal("Delete", result.Action);

        Assert.Equal("/api/Company/5", result.ExpectedUrls.Single());
        Assert.Equal("RemoveCompany", result.RouteName);
    }

    [Fact]
    public virtual async Task AttributeRoutedAction_Link_WithNonEmptyActionRouteTemplateAndNoActionRouteName()
    {
        // Arrange
        var url = LinkFrom("http://localhost")
            .To(new { id = 5 });

        // Act
        var response = await Client.GetAsync("http://localhost/api/Company/5/Employees");

        // Assert
        Assert.Equal(HttpStatusCode.OK, response.StatusCode);
        var body = await response.Content.ReadAsStringAsync();
        var result = JsonConvert.DeserializeObject<RoutingResult>(body);

        Assert.Equal("Company", result.Controller);
        Assert.Equal("GetEmployees", result.Action);

        Assert.Equal("/api/Company/5/Employees", result.ExpectedUrls.Single());
        Assert.Null(result.RouteName);
    }

    [Fact]
    public virtual async Task AttributeRoutedAction_LinkWithName_WithNonEmptyActionRouteTemplateAndActionRouteName()
    {
        // Arrange & Act
        var response = await Client.GetAsync("http://localhost/api/Company/5/Departments");

        // Assert
        Assert.Equal(HttpStatusCode.OK, response.StatusCode);
        var body = await response.Content.ReadAsStringAsync();
        var result = JsonConvert.DeserializeObject<RoutingResult>(body);

        Assert.Equal("Company", result.Controller);
        Assert.Equal("GetDepartments", result.Action);

        Assert.Equal("/api/Company/5/Departments", result.ExpectedUrls.Single());
        Assert.Equal("Departments", result.RouteName);
    }

    [Fact]
    public async Task ConventionalRoutedAction_DefaultValues_OptionalParameter_LinkToDefaultValuePath()
    {
        // Arrange
        var url = LinkFrom("http://localhost/DefaultValuesRoute/Optional")
            .To(new { });

        // Act
        var response = await Client.GetAsync(url);

        // Assert
        Assert.Equal(HttpStatusCode.OK, response.StatusCode);
        var body = await response.Content.ReadAsStringAsync();
        var result = JsonConvert.DeserializeObject<RoutingResult>(body);

        Assert.Equal("DefaultValues", result.Controller);
        Assert.Equal("OptionalParameter", result.Action);

        Assert.Equal("/DefaultValuesRoute/Optional", result.Link);
    }

    [Fact]
    public async Task ConventionalRoutedAction_DefaultValues_OptionalParameter_LinkToFullPath()
    {
        // Arrange
        var url = LinkFrom("http://localhost/DefaultValuesRoute/Optional")
            .To(new { id = "123" });

        // Act
        var response = await Client.GetAsync(url);

        // Assert
        Assert.Equal(HttpStatusCode.OK, response.StatusCode);
        var body = await response.Content.ReadAsStringAsync();
        var result = JsonConvert.DeserializeObject<RoutingResult>(body);

        Assert.Equal("DefaultValues", result.Controller);
        Assert.Equal("OptionalParameter", result.Action);

        Assert.Equal("/DefaultValuesRoute/Optional/DEFAULTVALUES/OPTIONALPARAMETER/123", result.Link);
    }

    [Fact]
    public async Task ConventionalRoutedAction_DefaultValues_DefaultParameter_LinkToDefaultValuePath()
    {
        // Arrange
        var url = LinkFrom("http://localhost/DefaultValuesRoute/Default")
            .To(new { });

        // Act
        var response = await Client.GetAsync(url);

        // Assert
        Assert.Equal(HttpStatusCode.OK, response.StatusCode);
        var body = await response.Content.ReadAsStringAsync();
        var result = JsonConvert.DeserializeObject<RoutingResult>(body);

        Assert.Equal("DefaultValues", result.Controller);
        Assert.Equal("DefaultParameter", result.Action);
        Assert.Equal("17", result.RouteValues["id"]);

        Assert.Equal("/DefaultValuesRoute/Default", result.Link);
    }

    [Fact]
    public async Task ConventionalRoutedAction_DefaultValues_DefaultParameterWithCatchAll_LinkToDefaultValuePath()
    {
        // Arrange
        var url = LinkFrom("http://localhost/DefaultValuesRoute/Default")
            .To(new { catchAll = "CatchAll" });

        // Act
        var response = await Client.GetAsync(url);

        // Assert
        Assert.Equal(HttpStatusCode.OK, response.StatusCode);
        var body = await response.Content.ReadAsStringAsync();
        var result = JsonConvert.DeserializeObject<RoutingResult>(body);

        Assert.Equal("DefaultValues", result.Controller);
        Assert.Equal("DefaultParameter", result.Action);
        Assert.Equal("17", result.RouteValues["id"]);

        Assert.Equal("/DefaultValuesRoute/Default/DEFAULTVALUES/DEFAULTPARAMETER/17/CatchAll", result.Link);
    }

    [Fact]
    public async Task ConventionalRoutedAction_DefaultValues_DefaultParameter_LinkToFullPath()
    {
        // Arrange
        var url = LinkFrom("http://localhost/DefaultValuesRoute/Default")
            .To(new { id = "123" });

        // Act
        var response = await Client.GetAsync(url);

        // Assert
        Assert.Equal(HttpStatusCode.OK, response.StatusCode);
        var body = await response.Content.ReadAsStringAsync();
        var result = JsonConvert.DeserializeObject<RoutingResult>(body);

        Assert.Equal("DefaultValues", result.Controller);
        Assert.Equal("DefaultParameter", result.Action);
        Assert.Equal("17", result.RouteValues["id"]);

        Assert.Equal("/DefaultValuesRoute/Default/DEFAULTVALUES/DEFAULTPARAMETER/123", result.Link);
    }

    [Fact]
    public async Task ConventionalRoutedAction_DefaultValues_DefaultParameterMatches_LinkToShortenedPath()
    {
        // Arrange
        var url = LinkFrom("http://localhost/DefaultValuesRoute/Default/DefaultValues/DefaultParameter/123")
            .To(new { id = "17" });

        // Act
        var response = await Client.GetAsync(url);

        // Assert
        Assert.Equal(HttpStatusCode.OK, response.StatusCode);
        var body = await response.Content.ReadAsStringAsync();
        var result = JsonConvert.DeserializeObject<RoutingResult>(body);

        Assert.Equal("DefaultValues", result.Controller);
        Assert.Equal("DefaultParameter", result.Action);
        Assert.Equal("123", result.RouteValues["id"]);

        Assert.Equal("/DefaultValuesRoute/Default", result.Link);
    }

    [Fact]
    public virtual async Task ConventionalRoutedAction_LinkToArea()
    {
        // Arrange
        var url = LinkFrom("http://localhost/")
            .To(new { action = "BuyTickets", controller = "Flight", area = "Travel" });

        // Act
        var response = await Client.GetAsync(url);

        // Assert
        Assert.Equal(HttpStatusCode.OK, response.StatusCode);
        var body = await response.Content.ReadAsStringAsync();
        var result = JsonConvert.DeserializeObject<RoutingResult>(body);

        Assert.Equal("Home", result.Controller);
        Assert.Equal("Index", result.Action);

        Assert.Equal("/Travel/Flight/BuyTickets", result.Link);
    }

    [Fact]
    public virtual async Task ConventionalRoutedAction_InArea_ImplicitLinkToArea()
    {
        // Arrange
        var url = LinkFrom("http://localhost/Travel/Flight").To(new { action = "BuyTickets" });

        // Act
        var response = await Client.GetAsync(url);

        // Assert
        Assert.Equal(HttpStatusCode.OK, response.StatusCode);
        var body = await response.Content.ReadAsStringAsync();
        var result = JsonConvert.DeserializeObject<RoutingResult>(body);

        Assert.Equal("Flight", result.Controller);
        Assert.Equal("Index", result.Action);

        Assert.Equal("/Travel/Flight/BuyTickets", result.Link);
    }

    [Fact]
    public virtual async Task ConventionalRoutedAction_InArea_ExplicitLeaveArea()
    {
        // Arrange
        var url = LinkFrom("http://localhost/Travel/Flight")
            .To(new { action = "Index", controller = "Home", area = "" });

        // Act
        var response = await Client.GetAsync(url);

        // Assert
        Assert.Equal(HttpStatusCode.OK, response.StatusCode);
        var body = await response.Content.ReadAsStringAsync();
        var result = JsonConvert.DeserializeObject<RoutingResult>(body);

        Assert.Equal("Flight", result.Controller);
        Assert.Equal("Index", result.Action);

        Assert.Equal("/", result.Link);
    }

    [Fact]
    public virtual async Task AttributeRoutedAction_LinkToArea()
    {
        // Arrange
        var url = LinkFrom("http://localhost/api/Employee")
            .To(new { action = "Schedule", controller = "Rail", area = "Travel" });

        // Act
        var response = await Client.GetAsync(url);

        // Assert
        Assert.Equal(HttpStatusCode.OK, response.StatusCode);
        var body = await response.Content.ReadAsStringAsync();
        var result = JsonConvert.DeserializeObject<RoutingResult>(body);

        Assert.Equal("Employee", result.Controller);
        Assert.Equal("List", result.Action);

        Assert.Equal("/ContosoCorp/Trains/CheckSchedule", result.Link);
    }

    [Fact]
    public virtual async Task AttributeRoutedAction_InArea_ImplicitLinkToArea()
    {
        // Arrange
        var url = LinkFrom("http://localhost/ContosoCorp/Trains/CheckSchedule").To(new { action = "Index" });

        // Act
        var response = await Client.GetAsync(url);

        // Assert
        Assert.Equal(HttpStatusCode.OK, response.StatusCode);
        var body = await response.Content.ReadAsStringAsync();
        var result = JsonConvert.DeserializeObject<RoutingResult>(body);

        Assert.Equal("Rail", result.Controller);
        Assert.Equal("Schedule", result.Action);

        Assert.Equal("/ContosoCorp/Trains", result.Link);
    }

    [Fact]
    public virtual async Task AttributeRoutedAction_InArea_ExplicitLeaveArea()
    {
        // Arrange
        var url = LinkFrom("http://localhost/ContosoCorp/Trains/CheckSchedule")
            .To(new { action = "Index", controller = "Home", area = "" });

        // Act
        var response = await Client.GetAsync(url);

        // Assert
        Assert.Equal(HttpStatusCode.OK, response.StatusCode);
        var body = await response.Content.ReadAsStringAsync();
        var result = JsonConvert.DeserializeObject<RoutingResult>(body);

        Assert.Equal("Rail", result.Controller);
        Assert.Equal("Schedule", result.Action);

        Assert.Equal("/", result.Link);
    }

    [Fact]
    public virtual async Task AttributeRoutedAction_InArea_LinkToConventionalRoutedActionInArea()
    {
        // Arrange
        var url = LinkFrom("http://localhost/ContosoCorp/Trains")
            .To(new { action = "Index", controller = "Flight", });

        // Act
        var response = await Client.GetAsync(url);

        // Assert
        Assert.Equal(HttpStatusCode.OK, response.StatusCode);
        var body = await response.Content.ReadAsStringAsync();
        var result = JsonConvert.DeserializeObject<RoutingResult>(body);

        Assert.Equal("Rail", result.Controller);
        Assert.Equal("Index", result.Action);

        Assert.Equal("/Travel/Flight", result.Link);
    }

    [Fact]
    public virtual async Task ConventionalRoutedAction_InArea_LinkToAttributeRoutedActionInArea()
    {
        // Arrange
        var url = LinkFrom("http://localhost/Travel/Flight")
            .To(new { action = "Index", controller = "Rail", });

        // Act
        var response = await Client.GetAsync(url);

        // Assert
        Assert.Equal(HttpStatusCode.OK, response.StatusCode);
        var body = await response.Content.ReadAsStringAsync();
        var result = JsonConvert.DeserializeObject<RoutingResult>(body);

        Assert.Equal("Flight", result.Controller);
        Assert.Equal("Index", result.Action);

        Assert.Equal("/ContosoCorp/Trains", result.Link);
    }

    [Fact]
    public virtual async Task ConventionalRoutedAction_InArea_LinkToAnotherArea()
    {
        // Arrange
        var url = LinkFrom("http://localhost/Travel/Flight")
            .To(new { action = "ListUsers", controller = "UserManagement", area = "Admin" });

        // Act
        var response = await Client.GetAsync(url);

        // Assert
        Assert.Equal(HttpStatusCode.OK, response.StatusCode);
        var body = await response.Content.ReadAsStringAsync();
        var result = JsonConvert.DeserializeObject<RoutingResult>(body);

        Assert.Equal("Flight", result.Controller);
        Assert.Equal("Index", result.Action);

        Assert.Equal("/Admin/Users/All", result.Link);
    }

    [Fact]
    public virtual async Task AttributeRoutedAction_InArea_LinkToAnotherArea()
    {
        // Arrange
        var url = LinkFrom("http://localhost/ContosoCorp/Trains")
            .To(new { action = "ListUsers", controller = "UserManagement", area = "Admin" });

        // Act
        var response = await Client.GetAsync(url);

        // Assert
        Assert.Equal(HttpStatusCode.OK, response.StatusCode);
        var body = await response.Content.ReadAsStringAsync();
        var result = JsonConvert.DeserializeObject<RoutingResult>(body);

        Assert.Equal("Rail", result.Controller);
        Assert.Equal("Index", result.Action);

        Assert.Equal("/Admin/Users/All", result.Link);
    }

    [Theory]
    [InlineData("/Bank/Deposit", "PUT", "Deposit")]
    [InlineData("/Bank/Deposit", "POST", "Deposit")]
    [InlineData("/Bank/Deposit/5", "PUT", "Deposit")]
    [InlineData("/Bank/Deposit/5", "POST", "Deposit")]
    [InlineData("/Bank/Withdraw/5", "POST", "Withdraw")]
    public async Task AttributeRouting_MixedAcceptVerbsAndRoute_Reachable(string path, string verb, string actionName)
    {
        // Arrange
        var request = new HttpRequestMessage(new HttpMethod(verb), "http://localhost" + path);

        // Act
        var response = await Client.SendAsync(request);

        // Assert
        Assert.Equal(HttpStatusCode.OK, response.StatusCode);

        var body = await response.Content.ReadAsStringAsync();
        var result = JsonConvert.DeserializeObject<RoutingResult>(body);

        Assert.Contains(path, result.ExpectedUrls);
        Assert.Equal("Banks", result.Controller);
        Assert.Equal(actionName, result.Action);
    }

    // These verbs don't match
    public static TheoryData<string, string> AttributeRouting_MixedAcceptVerbsAndRoute_UnreachableData
    {
        get
        {
            return new TheoryData<string, string>
                {
                    { "/Bank/Deposit", "GET" },
                    { "/Bank/Deposit/5", "DELETE" },
                    { "/Bank/Withdraw/5", "GET" },
                };
        }
    }

    [Theory]
    [MemberData(nameof(AttributeRouting_MixedAcceptVerbsAndRoute_UnreachableData))]
    public virtual async Task AttributeRouting_MixedAcceptVerbsAndRoute_Unreachable(string path, string verb)
    {
        // Arrange
        var request = new HttpRequestMessage(new HttpMethod(verb), "http://localhost" + path);

        // Act
        var response = await Client.SendAsync(request);

        // Assert
        AssertCorsRejectionStatusCode(response);
    }

    [Theory]
    [InlineData("/Order/Add/1", "GET", "Add")]
    [InlineData("/Order/Add", "POST", "Add")]
    [InlineData("/Order/Edit/1", "PUT", "Edit")]
    [InlineData("/Order/GetOrder", "GET", "GetOrder")]
    public async Task AttributeRouting_RouteNameTokenReplace_Reachable(string path, string verb, string actionName)
    {
        // Arrange
        var request = new HttpRequestMessage(new HttpMethod(verb), "http://localhost" + path);

        // Act
        var response = await Client.SendAsync(request);

        // Assert
        Assert.Equal(HttpStatusCode.OK, response.StatusCode);

        var body = await response.Content.ReadAsStringAsync();
        var result = JsonConvert.DeserializeObject<RoutingResult>(body);

        Assert.Contains(path, result.ExpectedUrls);
        Assert.Equal("Order", result.Controller);
        Assert.Equal(actionName, result.Action);
    }

    [Fact]
    public async Task RazorPage_WithLinks_GeneratesLinksCorrectly()
    {
        // Arrange & Act
        var response = await Client.GetAsync("http://localhost/PageWithLinks");

        // Assert
        Assert.Equal(HttpStatusCode.OK, response.StatusCode);

        var document = await response.GetHtmlDocumentAsync();

        var editLink = document.RequiredQuerySelector("#editlink");
        Assert.Equal("/Edit/10", editLink.GetAttribute("href"));

        var contactLink = document.RequiredQuerySelector("#contactlink");
        Assert.Equal("/Home/Contact?org=contoso", contactLink.GetAttribute("href"));
    }

    [Fact]
    public async Task CanRunMiddlewareAfterRouting()
    {
        // Act
        var response = await Client.GetAsync("/afterrouting");

        // Assert
        await response.AssertStatusCodeAsync(HttpStatusCode.OK);
        var content = await response.Content.ReadAsStringAsync();
        Assert.Equal("Hello from middleware after routing", content);
    }

    [Fact]
    public async Task CanUseLinkGeneration_To_ConventionalActionWithPageParameter()
    {
        // Act
        var response = await Client.GetAsync("/PageParameter/LinkToPageParameter");

        // Assert
        await response.AssertStatusCodeAsync(HttpStatusCode.OK);
        var content = await response.Content.ReadAsStringAsync();
        Assert.Equal("/PageParameter/PageParameter?page=17", content);
    }

    protected static LinkBuilder LinkFrom(string url)
    {
        return new LinkBuilder(url);
    }

    protected virtual void AssertCorsRejectionStatusCode(HttpResponseMessage response)
    {
        Assert.Equal(HttpStatusCode.NotFound, response.StatusCode);
    }
}
