Fix digest authentication to use the correct URI

tests/standalone/io/http_auth_digest_test.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.
 
 import "package:expect/expect.dart";
 import 'dart:async';
 import 'dart:crypto';
 import 'dart:io';
 import 'dart:isolate';
 import 'dart:uri';
@@ skipping 65 matching lines @@
           } else {
             var uri = header.parameters["uri"];
             var qop = header.parameters["qop"];
             var cnonce = header.parameters["cnonce"];
             var nc = header.parameters["nc"];
             Expect.equals("digest", header.value.toLowerCase());
             Expect.equals("dart", header.parameters["username"]);
             Expect.equals(realm, header.parameters["realm"]);
             Expect.equals("MD5", header.parameters["algorithm"]);
             Expect.equals(nonce, header.parameters["nonce"]);
-            Expect.equals(request.uri.path, uri);
+            Expect.equals(request.uri.toString(), uri);
             if (qop != null) {
               // A server qop of auth-int is downgraded to none by the client.
               Expect.equals("auth", serverQop);
               Expect.equals("auth", header.parameters["qop"]);
               Expect.isNotNull(cnonce);
               Expect.isNotNull(nc);
               Expect.isFalse(ncs.contains(nc));
               ncs.add(nc);
             } else {
               Expect.isNull(cnonce);
@@ skipping 97 matching lines @@
           return response.fold(null, (x, y) {});
         });
     }
 
     client.addCredentials(
         Uri.parse("http://127.0.0.1:${server.port}/digest"),
         "test",
         new HttpClientDigestCredentials("dart", "password"));
 
     var futures = [];
-    for (int i = 0; i < 5; i++) {
+    for (int i = 0; i < 2; i++) {
+      String uriBase = "http://127.0.0.1:${server.port}/digest";
       futures.add(
           makeRequest(
-              Uri.parse("http://127.0.0.1:${server.port}/digest")));
+              Uri.parse(uriBase)));
+      futures.add(
+          makeRequest(
+              Uri.parse("$uriBase?querystring")));
+      futures.add(
+          makeRequest(
+              Uri.parse("$uriBase?querystring#fragment")));
     }
     Future.wait(futures).then((_) {
       server.shutdown();
       client.close();
     });
   });
 }
 
 void testAuthenticateCallback(String algorithm, String qop) {
   Server.start(algorithm, qop).then((server) {
@@ skipping 166 matching lines @@
   testAuthenticateCallback(null, null);
   testAuthenticateCallback("MD5", null);
   testAuthenticateCallback("MD5", "auth");
   testAuthenticateCallback("MD5", "auth-int");
   testStaleNonce();
   testNextNonce();
   // These teste are not normally run. They can be used for locally
   // testing with another web server (e.g. Apache).
   //testLocalServerDigest();
 }