pkg/shelf: case-insensitive headers, cleaner Request ctor, a lot more tests

pkg/scheduled_test/lib/scheduled_server.dart

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library scheduled_test.scheduled_server;
 
 import 'dart:async';
 import 'dart:collection';
 import 'dart:io';
 
@@ skipping 70 matching lines @@
   }
 
   /// The handler for incoming [shelf.Request]s to this server.
   ///
   /// This dispatches the request to the first handler in the queue. It's that
   /// handler's responsibility to check that the method/path are correct and
   /// that it's being run at the correct time.
   Future<shelf.Response> _handleRequest(shelf.Request request) {
     return wrapFuture(syncFuture(() {
       if (_handlers.isEmpty) {
-        fail("'$description' received ${request.method} ${request.pathInfo} "
+        fail("'$description' received ${request.method} ${request.url.path} "
              "when no more requests were expected.");
       }
       return _handlers.removeFirst().fn(request);
-    }), 'receiving ${request.method} ${request.pathInfo}').catchError((error) {
+    }), 'receiving ${request.method} ${request.url.path}').catchError((error) {
       // Don't let errors bubble up to the shelf handler. It will print them to
       // stderr, but the user will already be notified via the scheduled_test
       // infrastructure.
       return new shelf.Response.internalServerError(
           body: error.toString(),
           headers: {'content-type': 'text/plain'});
     });
   }
 }