c# - 在ASP.NET MVC6中安装View引擎以与单元测试中的AspNet.TestHost.TestServer一起使用

如何在ASP.NET MVC 6中设置视图引擎以与TestServer创建的测试主机一起使用。我试图从MVC 6回购中实现trick：

[Fact]
public async Task CallMvc()
{
    var client = GetTestHttpClient();

    //call to HomeController.Index to get Home/Index.cshtml content
    HttpRequestMessage request = new HttpRequestMessage(HttpMethod.Get, "/");

    var response = await client.SendAsync(request);
    var content = await response.Content.ReadAsStringAsync();
    PAssert.IsTrue(() => content != null);
}

private HttpClient GetTestHttpClient(Action<IServiceCollection> configureServices = null)
{
    var applicationServices = CallContextServiceLocator.Locator.ServiceProvider;
    var applicationEnvironment = applicationServices.GetRequiredService<IApplicationEnvironment>();
    var libraryManager = applicationServices.GetRequiredService<ILibraryManager>();
    var startupAssembly = typeof(Startup).Assembly;

    var applicationName = startupAssembly.GetName().Name;
    var library = libraryManager.GetLibraryInformation(applicationName);
    var applicationRoot = Path.GetDirectoryName(library.Path);

    var hostingEnvironment = new HostingEnvironment()
    {
        WebRootPath = applicationRoot
    };

    var loggerFactory = new LoggerFactory();

    var startup = new Startup();

    Action<IServiceCollection> configureServicesAction = services =>
    {
        services.AddInstance(applicationEnvironment);
        services.AddInstance<IHostingEnvironment>(hostingEnvironment);

        // Inject a custom assembly provider. Overrides AddMvc() because that uses TryAdd().
        var assemblyProvider = new FixedSetAssemblyProvider();
        assemblyProvider.CandidateAssemblies.Add(startupAssembly);
        services.AddInstance<IAssemblyProvider>(assemblyProvider);

        startup.ConfigureServices(services);
    };

    Action<IApplicationBuilder> configureApp = _ => startup.Configure(_, hostingEnvironment, loggerFactory);
    var server = TestServer.Create(configureApp, configureServicesAction);
    var httpClient = server.CreateClient();

    return httpClient;
}

启动类只是MVC最简单的设置：

public class Startup
{
    // This method gets called by the runtime. Use this method to add services to the container.
    public void ConfigureServices(IServiceCollection services)
    {
        // Add MVC services to the services container.
        services.AddMvc();
    }

    // Configure is called after ConfigureServices is called.
    public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
    {
        // Add MVC to the request pipeline.
        app.UseMvc(routes =>
        {
            routes.MapRoute("default", "{controller=Home}/{action=Index}/{id?}");
        });
    }
}

我正在获取Response status code does not indicate success: 500 (Internal Server Error)，并且在内部它无法找到Index.cshtml视图。所有路径
以下是单元测试库路径或dnx路径：

var applicationBasePath = _appEnvironment.ApplicationBasePath;
var webRootPath = _env.WebRootPath;
var baseDirectory = AppDomain.CurrentDomain.BaseDirectory;

使用TestServer从UnitTest设置视图引擎和环境的工作方式是什么？

最佳答案

您定义不同环境的想法正朝着正确的方向发展。

通过使用扩展方法，我已经看到了一个非常优雅的解决方案：

https://github.com/bartmax/TestServerMvcHelper

它甚至在NuGet上，但我无法从那里开始工作。可能您可以将两个类MvcTestApplicationEnvironment.cs和WebHostBuilderExtensions.cs合并到您的解决方案中。

然后，您可以使用以下方法设置TestServer：

var builder = TestServer.CreateBuilder();
builder.UseStartup<Startup>()
   .UseEnvironment("Testing")
   .UseApplicationPath("YourMvcApplication");
var server = new TestServer(builder);