Add optional defaultEncoding to HttpBodyHandler, as a way to override default encoding for 'applica…

tests/standalone/io/http_body_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 'dart:io';
 import 'dart:utf';
 
 import 'package:expect/expect.dart';
 
 void testHttpClientResponseBody() {
@@ skipping 28 matching lines @@
                 break;
 
               case "json":
                 Expect.mapEquals(expectedBody, body.body);
                 break;
 
               default:
                 Expect.fail("bad body type");
             }
           }, onError: (error) {
-            if (!shouldFail) Expect.fail("Error unexpected");
+            if (!shouldFail) throw error;
           })
           .whenComplete(() {
             client.close();
             server.close();
           });
     });
   }
   test("text/plain", "body".codeUnits, "body", "text");
   test("text/plain; charset=utf-8",
        "body".codeUnits,
@@ skipping 23 matching lines @@
        null,
        "json",
        true);
 }
 
 void testHttpServerRequestBody() {
   void test(String mimeType,
             List<int> content,
             dynamic expectedBody,
             String type,
-            {bool shouldFail: false}) {
+            {bool shouldFail: false,
+             Encoding defaultEncoding: Encoding.UTF_8}) {
     HttpServer.bind("127.0.0.1", 0).then((server) {
-      server.transform(new HttpBodyHandler())
+      server.transform(new HttpBodyHandler(defaultEncoding: defaultEncoding))
           .listen((body) {
             if (shouldFail) Expect.fail("Error expected");
             Expect.equals(type, body.type);
             switch (type) {
               case "text":
                 Expect.equals(body.contentType.mimeType, "text/plain");
                 Expect.equals(expectedBody, body.body);
                 break;
 
               case "json":
@@ skipping 53 matching lines @@
           .then((response) {
             if (shouldFail) {
               Expect.equals(HttpStatus.BAD_REQUEST, response.statusCode);
             }
             response.fold(null, (x, y) {});
             client.close();
             server.close();
           });
     });
   }
+
   test("text/plain", "body".codeUnits, "body", "text");
   test("text/plain; charset=utf-8",
        "body".codeUnits,
        "body",
        "text");
   test("text/plain; charset=utf-8", [42], "*", "text");
   test("text/plain; charset=us-ascii", [142], "?", "text");
   test("text/plain; charset=utf-8",
        [142],
        new String.fromCharCodes([UNICODE_REPLACEMENT_CHARACTER_CODEPOINT]),
@@ skipping 64 matching lines @@
                     'contentType': 'application/json',
                     'content': 'File content'} },
        "form");
 
   test('application/x-www-form-urlencoded',
        '%E5%B9%B3%3D%E4%BB%AE%E5%90%8D=%26%2324179%3B%26%2320206%3B%26%'
        '2321517%3B&b=%26%2324179%3B%26%2320206%3B%26%2321517%3B'.codeUnits,
        { 'b' : '平仮名',
          '平=仮名' : '平仮名'},
        "form");
+
+  test('application/x-www-form-urlencoded',
+       'a=%F8+%26%23548%3B'.codeUnits,
+       { 'a' : '\u{FFFD}\u{0224}' },
+       "form");
+
+  test('application/x-www-form-urlencoded',
+       'a=%F8+%26%23548%3B'.codeUnits,
+       { 'a' : 'ø Ȥ' },
+       "form",
+       defaultEncoding: Encoding.ISO_8859_1);
+
+  test('application/x-www-form-urlencoded',
+       'a=%C3%B8+%C8%A4'.codeUnits,
+       { 'a' : 'ø Ȥ' },
+       "form");
 }
 
 void main() {
   testHttpClientResponseBody();
   testHttpServerRequestBody();
 }