Make VirtualDirectory redirect if the directory-path does not end with a tailing slash.

pkg/http_server/test/utils.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 utils;
 
 import 'dart:async';
 import 'dart:convert';
 import 'dart:io';
 import "package:unittest/unittest.dart";
 
 import 'package:http_server/http_server.dart';
 
 void testVirtualDir(String name, Future func(Directory dir)) {
   test(name, () {
     var dir = Directory.systemTemp.createTempSync('http_server_virtual_');
 
     return func(dir)
         .whenComplete(() {
           return dir.delete(recursive: true);
         });
   });
 }
 
 Future<int> getStatusCodeForVirtDir(VirtualDirectory virtualDir,
                            String path,
                           {String host,
                            bool secure: false,
                            DateTime ifModifiedSince,
-                           bool rawPath: false}) {
+                           bool rawPath: false,
+                           bool followRedirects: true}) {
   return _withServer((server) {
 
       virtualDir.serve(server);
       return getStatusCode(server.port, path, host: host, secure: secure,
-          ifModifiedSince: ifModifiedSince, rawPath: rawPath);
+          ifModifiedSince: ifModifiedSince, rawPath: rawPath,
+          followRedirects: followRedirects);
     });
 }
 
 Future<int> getStatusCode(int port,
                           String path,
                           {String host,
                            bool secure: false,
                            DateTime ifModifiedSince,
-                           bool rawPath: false}) {
+                           bool rawPath: false,
+                           bool followRedirects: true}) {
   Uri uri;
   if (rawPath) {
     uri = new Uri(scheme: secure ? 'https' : 'http',
                   host: 'localhost',
                   port: port,
                   path: path);
   } else {
     uri = (secure ?
         new Uri.https('localhost:$port', path) :
         new Uri.http('localhost:$port', path));
   }
 
   return new HttpClient().getUrl(uri)
       .then((request) {
+        if (!followRedirects) request.followRedirects = false;
         if (host != null) request.headers.host = host;
         if (ifModifiedSince != null) {
           request.headers.ifModifiedSince = ifModifiedSince;
         }
         return request.close();
       })
       .then((response) => response.drain().then(
           (_) => response.statusCode));
 }
 
@@ skipping 31 matching lines @@
 
 
 const CERTIFICATE = "localhost_cert";
 
 
 void setupSecure() {
   String certificateDatabase = Platform.script.resolve('pkcert').toFilePath();
   SecureSocket.initialize(database: certificateDatabase,
                           password: 'dartdart');
 }