gistfile1.cs

[Fact]
public async Task Fact()
{
    await OwinTester.Run(
       useConfiguration: app =>
       {
           app.UseBasicAuthentication(Options);
       },
       useRequest: () =>
       {
           var req = new HttpRequestMessage(HttpMethod.Get, "http://example.net");
           req.Headers.Authorization = new AuthenticationHeaderValue("basic",
               Convert.ToBase64String(
               Encoding.ASCII.GetBytes("Alice:Alice")));
           return req;
       },
       assertRequest: ctx =>
       {
           Assert.Equal("Alice", ctx.Request.User.Identity.Name);
       },
       assertResponse: response =>
       {
           Assert.Equal(HttpStatusCode.OK, response.StatusCode);
       }
  );
}