Why is TestServer (AspNetCore) giving a 404 error in static files?

Question

I have an example server

var host = new WebHostBuilder() .UseKestrel() .UseContentRoot(Directory.GetCurrentDirectory()) .UseIISIntegration() .UseStartup<Startup>() .Build(); host.Run(); 

with configuration in Startup class:

 public void Configure(IApplicationBuilder app) { app.Run(async (context) => { await context.Response.WriteAsync("Hello World!"); }); } 

and I use xunit test (learning):

  public TestFixture() { var builder = new WebHostBuilder().UseStartup<TStartup>(); _server = new TestServer(builder); Client = _server.CreateClient(); Client.BaseAddress = new Uri(address); } 

and later

  var response = await Client.GetAsync("http://localhost:51021/"); Assert.Equal(HttpStatusCode.OK, response.StatusCode); var responseString = await response.Content.ReadAsStringAsync(); var content = await response.Content.ReadAsStringAsync(); Assert.Contains("Hello World!", content); 

Everything is in order (200). Now I am changing Startup.cs

  public void Configure(IApplicationBuilder app) { app.UseDefaultFiles(); app.UseStaticFiles(); //app.Run(async (context) => //{ // await context.Response.WriteAsync("Hello World!"); //}); } 

If I run the application in a browser, everything is fine (index.html is shown). But if I call it using TestServer, I get (404 Not Found). Where is my mistake?

Answer 1

XUnit launches a site from another directory. We had to work around like this: https://github.com/aspnet/StaticFiles/blob/d692066b2bd711653150ad2cccc2268583355532/test/Microsoft.AspNetCore.StaticFiles.Tests/StaticFilesTestServer.cs#L20