public void Request_headers_dictionary_is_case_insensitive()
{
SetRequestPaths("http://localhost/", "/");
_httpRequest.Headers["Content-Type"] = "text/plain";
var app = new FakeApp("200 OK", "Hello World");
var appHandler = new AppHandler(app.AppDelegate);
ProcessRequest(appHandler);
Assert.That(app.Env["aspnet.HttpContextBase"], Is.SameAs(_httpContext));
var headers = new Environment(app.Env).Headers;
Assert.That(headers.GetHeader("Content-Type"), Is.EqualTo("text/plain"));
Assert.That(headers.GetHeader("CONTENT-TYPE"), Is.EqualTo("text/plain"));
Assert.That(headers.Keys.ToArray().Contains("Content-Type"), Is.True);
Assert.That(headers.Keys.ToArray().Contains("CONTENT-TYPE"), Is.False);
}