Ocelot/test/Ocelot.AcceptanceTests/ServiceFabricTests.cs

using System.Linq;
using Microsoft.Extensions.Primitives;

namespace Ocelot.AcceptanceTests
{
    using System;
    using System.Collections.Generic;
    using System.IO;
    using System.Net;
    using Microsoft.AspNetCore.Builder;
    using Microsoft.AspNetCore.Hosting;
    using Microsoft.AspNetCore.Http;
    using Ocelot.Configuration.File;
    using Shouldly;
    using TestStack.BDDfy;
    using Xunit;

    public class ServiceFabricTests : IDisposable
    {
        private IWebHost _builder;
        private readonly Steps _steps;
        private string _downstreamPath;

        public ServiceFabricTests()
        {
            _steps = new Steps();
        }

        [Fact]
        public void should_support_service_fabric_naming_and_dns_service()
        {
            var configuration = new FileConfiguration
            {
                ReRoutes = new List<FileReRoute>
                    {
                        new FileReRoute
                        {
                            DownstreamPathTemplate = "/api/values",
                            DownstreamScheme = "http",
                            UpstreamPathTemplate = "/EquipmentInterfaces",
                            UpstreamHttpMethod = new List<string> { "Get" },
                            UseServiceDiscovery = true,
                            ServiceName = "OcelotServiceApplication/OcelotApplicationService"
                        }
                    },
                GlobalConfiguration = new FileGlobalConfiguration
                {
                    ServiceDiscoveryProvider = new FileServiceDiscoveryProvider()
                    {
                        Host = "localhost",
                        Port = 19081,
                        Type = "ServiceFabric"
                    }
                }
            };

            this.Given(x => x.GivenThereIsAServiceRunningOn("http://localhost:19081", "/OcelotServiceApplication/OcelotApplicationService/api/values", 200, "Hello from Laura"))
                .And(x => _steps.GivenThereIsAConfiguration(configuration))
                .And(x => _steps.GivenOcelotIsRunning())
                .When(x => _steps.WhenIGetUrlOnTheApiGateway("/EquipmentInterfaces"))
                .Then(x => _steps.ThenTheStatusCodeShouldBe(HttpStatusCode.OK))
                .And(x => _steps.ThenTheResponseBodyShouldBe("Hello from Laura"))
                .BDDfy();
        }

        private void GivenThereIsAServiceRunningOn(string baseUrl, string basePath, int statusCode, string responseBody)
        {
            _builder = new WebHostBuilder()
                .UseUrls(baseUrl)
                .UseKestrel()
                .UseContentRoot(Directory.GetCurrentDirectory())
                .UseIISIntegration()
                .Configure(app =>
                {
                    app.UsePathBase(basePath);
                    app.Run(async context =>
                    {   
                        _downstreamPath = !string.IsNullOrEmpty(context.Request.PathBase.Value) ? context.Request.PathBase.Value : context.Request.Path.Value;

                        if(_downstreamPath != basePath)
                        {
                            context.Response.StatusCode = statusCode;
                            await context.Response.WriteAsync("downstream path didnt match base path");
                        }
                        else
                        {
                            if (context.Request.Query.TryGetValue("cmd", out var values))
                            {
                                values.First().ShouldBe("instance");
                                context.Response.StatusCode = statusCode;
                                await context.Response.WriteAsync(responseBody);
                            }
                            else
                            {
                                context.Response.StatusCode = statusCode;
                                await context.Response.WriteAsync("downstream path didnt match base path");
                            }
                        }
                    });
                })
                .Build();

            _builder.Start();
        }

        public void Dispose()
        {
            _builder?.Dispose();
            _steps.Dispose();
        }
    }
}