Update pkg/http to use the new async APIs.

pkg/http/test/http_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.
 
 library http_test;
 
 import 'dart:io';
 
 import 'package:unittest/unittest.dart';
 import 'package:http/http.dart' as http;
 import 'utils.dart';
 
 main() {
   group('http.', () {
     setUp(startServer);
     tearDown(stopServer);
 
     test('head', () {
-      http.head(serverUrl).then(expectAsync1((response) {
+      expect(http.head(serverUrl).then((response) {
         expect(response.statusCode, equals(200));
         expect(response.body, equals(''));
-      }));
+      }), completes);
     });
 
     test('get', () {
       expect(http.get(serverUrl, headers: {
         'X-Random-Header': 'Value',
         'X-Other-Header': 'Other Value'
-      }).then(expectAsync1((response) {
+      }).then((response) {
         expect(response.statusCode, equals(200));
         expect(response.body, parse(equals({
           'method': 'GET',
           'path': '/',
           'headers': {
             'content-length': ['0'],
             'x-random-header': ['Value'],
             'x-other-header': ['Other Value']
           },
         })));
-      })), completes);
+      }), completes);
     });
 
     test('post', () {
       expect(http.post(serverUrl, headers: {
         'X-Random-Header': 'Value',
         'X-Other-Header': 'Other Value'
       }, fields: {
         'some-field': 'value',
         'other-field': 'other value'
-      }).then(expectAsync1((response) {
+      }).then((response) {
         expect(response.statusCode, equals(200));
         expect(response.body, parse(equals({
           'method': 'POST',
           'path': '/',
           'headers': {
             'content-type': [
               'application/x-www-form-urlencoded; charset=UTF-8'
             ],
             'content-length': ['40'],
             'x-random-header': ['Value'],
             'x-other-header': ['Other Value']
           },
           'body': 'some-field=value&other-field=other+value'
         })));
-      })), completes);
+      }), completes);
     });
 
     test('post without fields', () {
       expect(http.post(serverUrl, headers: {
         'X-Random-Header': 'Value',
         'X-Other-Header': 'Other Value',
         'Content-Type': 'text/plain'
-      }).then(expectAsync1((response) {
+      }).then((response) {
         expect(response.statusCode, equals(200));
         expect(response.body, parse(equals({
           'method': 'POST',
           'path': '/',
           'headers': {
             'content-length': ['0'],
             'content-type': ['text/plain'],
             'x-random-header': ['Value'],
             'x-other-header': ['Other Value']
           }
         })));
-      })), completes);
+      }), completes);
     });
 
     test('put', () {
       expect(http.put(serverUrl, headers: {
         'X-Random-Header': 'Value',
         'X-Other-Header': 'Other Value'
       }, fields: {
         'some-field': 'value',
         'other-field': 'other value'
-      }).then(expectAsync1((response) {
+      }).then((response) {
         expect(response.statusCode, equals(200));
         expect(response.body, parse(equals({
           'method': 'PUT',
           'path': '/',
           'headers': {
             'content-type': [
               'application/x-www-form-urlencoded; charset=UTF-8'
             ],
             'content-length': ['40'],
             'x-random-header': ['Value'],
             'x-other-header': ['Other Value']
           },
           'body': 'some-field=value&other-field=other+value'
         })));
-      })), completes);
+      }), completes);
     });
 
     test('put without fields', () {
       expect(http.put(serverUrl, headers: {
         'X-Random-Header': 'Value',
         'X-Other-Header': 'Other Value',
         'Content-Type': 'text/plain'
-      }).then(expectAsync1((response) {
+      }).then((response) {
         expect(response.statusCode, equals(200));
         expect(response.body, parse(equals({
           'method': 'PUT',
           'path': '/',
           'headers': {
             'content-length': ['0'],
             'content-type': ['text/plain'],
             'x-random-header': ['Value'],
             'x-other-header': ['Other Value']
           }
         })));
-      })), completes);
+      }), completes);
     });
 
     test('delete', () {
       expect(http.delete(serverUrl, headers: {
         'X-Random-Header': 'Value',
         'X-Other-Header': 'Other Value'
-      }).then(expectAsync1((response) {
+      }).then((response) {
         expect(response.statusCode, equals(200));
         expect(response.body, parse(equals({
           'method': 'DELETE',
           'path': '/',
           'headers': {
             'content-length': ['0'],
             'x-random-header': ['Value'],
             'x-other-header': ['Other Value']
           }
         })));
-      })), completes);
+      }), completes);
     });
 
     test('read', () {
       expect(http.read(serverUrl, headers: {
         'X-Random-Header': 'Value',
         'X-Other-Header': 'Other Value'
-      }).then(expectAsync1((val) => val)), completion(parse(equals({
+      }).then((val) => val), completion(parse(equals({
         'method': 'GET',
         'path': '/',
         'headers': {
           'content-length': ['0'],
           'x-random-header': ['Value'],
           'x-other-header': ['Other Value']
         },
       }))));
     });
 
     test('read throws an error for a 4** status code', () {
-      http.read(serverUrl.resolve('/error'))
-          .then((_) { throw "Error expected for readBytes"; })
-          .catchError(expectAsync1((e) { }), test: (e) => e is HttpException);
+      expect(http.read(serverUrl.resolve('/error')), throwsHttpException);
     });
 
     test('readBytes', () {
       var future = http.readBytes(serverUrl, headers: {
         'X-Random-Header': 'Value',
         'X-Other-Header': 'Other Value'
-      }).then(expectAsync1((bytes) => new String.fromCharCodes(bytes)));
+      }).then((bytes) => new String.fromCharCodes(bytes));
 
       expect(future, completion(parse(equals({
         'method': 'GET',
         'path': '/',
         'headers': {
           'content-length': ['0'],
           'x-random-header': ['Value'],
           'x-other-header': ['Other Value']
         },
       }))));
     });
 
     test('readBytes throws an error for a 4** status code', () {
-        http.readBytes(serverUrl.resolve('/error'))
-            .then((_) { throw "Error expected for readBytes"; })
-            .catchError(expectAsync1((e) { }), test: (e) => e is HttpException);
+      expect(http.readBytes(serverUrl.resolve('/error')), throwsHttpException);
     });
   });
 }