Fix pkg:http tests to include the accept-encoding header.

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:http/http.dart' as http;
 import 'package:unittest/unittest.dart';
@@ skipping 18 matching lines @@
         expect(http.get(serverUrl, headers: {
           'X-Random-Header': 'Value',
           'X-Other-Header': 'Other Value'
         }).then((response) {
           expect(response.statusCode, equals(200));
           expect(response.body, parse(equals({
             'method': 'GET',
             'path': '/',
             'headers': {
               'content-length': ['0'],
+              'accept-encoding': ['gzip'],
               'x-random-header': ['Value'],
               'x-other-header': ['Other Value']
             },
           })));
         }), completes);
       }), completes);
     });
 
     test('post', () {
       expect(startServer().then((_) {
         expect(http.post(serverUrl, headers: {
           'X-Random-Header': 'Value',
           'X-Other-Header': 'Other Value'
         }, fields: {
           'some-field': 'value',
           'other-field': 'other value'
         }).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'],
+              'accept-encoding': ['gzip'],
               'x-random-header': ['Value'],
               'x-other-header': ['Other Value']
             },
             'body': 'some-field=value&other-field=other+value'
           })));
         }), completes);
       }), completes);
     });
 
     test('post without fields', () {
       expect(startServer().then((_) {
         expect(http.post(serverUrl, headers: {
           'X-Random-Header': 'Value',
           'X-Other-Header': 'Other Value',
           'Content-Type': 'text/plain'
         }).then((response) {
           expect(response.statusCode, equals(200));
           expect(response.body, parse(equals({
             'method': 'POST',
             'path': '/',
             'headers': {
+              'accept-encoding': ['gzip'],
               'content-length': ['0'],
               'content-type': ['text/plain'],
               'x-random-header': ['Value'],
               'x-other-header': ['Other Value']
             }
           })));
         }), completes);
       }), completes);
     });
 
     test('put', () {
       expect(startServer().then((_) {
         expect(http.put(serverUrl, headers: {
           'X-Random-Header': 'Value',
           'X-Other-Header': 'Other Value'
         }, fields: {
           'some-field': 'value',
           'other-field': 'other value'
         }).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'
               ],
+              'accept-encoding': ['gzip'],
               '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(startServer().then((_) {
         expect(http.put(serverUrl, headers: {
           'X-Random-Header': 'Value',
           'X-Other-Header': 'Other Value',
           'Content-Type': 'text/plain'
         }).then((response) {
           expect(response.statusCode, equals(200));
           expect(response.body, parse(equals({
             'method': 'PUT',
             'path': '/',
             'headers': {
               'content-length': ['0'],
+              'accept-encoding': ['gzip'],
               'content-type': ['text/plain'],
               'x-random-header': ['Value'],
               'x-other-header': ['Other Value']
             }
           })));
         }), completes);
       }), completes);
     });
 
     test('delete', () {
       expect(startServer().then((_) {
         expect(http.delete(serverUrl, headers: {
           'X-Random-Header': 'Value',
           'X-Other-Header': 'Other Value'
         }).then((response) {
           expect(response.statusCode, equals(200));
           expect(response.body, parse(equals({
             'method': 'DELETE',
             'path': '/',
             'headers': {
               'content-length': ['0'],
+              'accept-encoding': ['gzip'],
               'x-random-header': ['Value'],
               'x-other-header': ['Other Value']
             }
           })));
         }), completes);
       }), completes);
     });
 
     test('read', () {
       expect(startServer().then((_) {
         expect(http.read(serverUrl, headers: {
           'X-Random-Header': 'Value',
           'X-Other-Header': 'Other Value'
         }).then((val) => val), completion(parse(equals({
           'method': 'GET',
           'path': '/',
           'headers': {
             'content-length': ['0'],
+            'accept-encoding': ['gzip'],
             'x-random-header': ['Value'],
             'x-other-header': ['Other Value']
           },
         }))));
       }), completes);
     });
 
     test('read throws an error for a 4** status code', () {
       expect(startServer().then((_) {
         expect(http.read(serverUrl.resolve('/error')), throwsHttpException);
       }), completes);
     });
 
     test('readBytes', () {
       expect(startServer().then((_) {
         var future = http.readBytes(serverUrl, headers: {
           'X-Random-Header': 'Value',
           'X-Other-Header': 'Other Value'
         }).then((bytes) => new String.fromCharCodes(bytes));
 
         expect(future, completion(parse(equals({
           'method': 'GET',
           'path': '/',
           'headers': {
             'content-length': ['0'],
+            'accept-encoding': ['gzip'],
             'x-random-header': ['Value'],
             'x-other-header': ['Other Value']
           },
         }))));
       }), completes);
     });
 
     test('readBytes throws an error for a 4** status code', () {
       expect(startServer().then((_) {
         expect(http.readBytes(serverUrl.resolve('/error')), throwsHttpException);
       }), completes);
     });
   });
 }