Added for tests branch

Author: seifibrahim32

pkgs/http/test/html/cache_test.dart

@@ -15,6 +15,31 @@ import 'package:test/test.dart';
 import 'utils.dart';
 
 void main() {
+  late int port;
+  setUp(() async {
+    final channel = spawnHybridUri(Uri(path: '/test/stub_server.dart'),
+        stayAlive: true);
+    port = await channel.stream.first as int;
+  });
+
+  test('#send a POST Request with default type', () async {
+    var client = BrowserClient();
+
+    var request = http.StreamedRequest('POST', echoUrl.replace(port: port));
+    var responseFuture = client.send(request);
+    request.sink.add('{"hello": "world"}'.codeUnits);
+    unawaited(request.sink.close());
+
+    var response = await responseFuture;
+
+    client.close();
+
+    expect(response.statusCode, 200);
+    expect('response', response.contentLength);
+    client.close();
+
+  });
+
   test('#send a StreamedRequest with default type', () async {
     var client = BrowserClient(cacheMode: CacheMode.defaultType);
     var request = http.StreamedRequest('POST', echoUrl);
@@ -30,19 +55,13 @@ void main() {
     expect(response.reasonPhrase, 'OK');
   }, skip: 'Need to fix server tests for browser');
 
-  test('#send a StreamedRequest with reload type', () async {
+  test('#send a POST Request with reload type', () async {
     var client = BrowserClient(cacheMode: CacheMode.reload);
-    var request = http.StreamedRequest('POST', echoUrl);
 
-    var responseFuture = client.send(request);
-    request.sink.add('{"hello": "world"}'.codeUnits);
-    unawaited(request.sink.close());
-    var response = await responseFuture;
-    var bytesString = await response.stream.bytesToString();
+    var responseFuture = client.post(echoUrl.replace(port: port));
 
     client.close();
 
-    expect(bytesString, contains('no-cache'));
   }, skip: 'Need to fix server tests for browser');
 
   test('#send a StreamedRequest with no-cache type', () async {

pkgs/http/test/stub_server.dart

@@ -11,7 +11,7 @@ import 'package:http/src/utils.dart';
 import 'package:stream_channel/stream_channel.dart';
 
 void hybridMain(StreamChannel<dynamic> channel) async {
-  final server = await HttpServer.bind('localhost', 0);
+  final server = await HttpServer.bind('localhost', 63618);
   final url = Uri.http('localhost:${server.port}', '');
   server.listen((request) async {
     var path = request.uri.path;
@@ -35,6 +35,17 @@ void hybridMain(StreamChannel<dynamic> channel) async {
       return;
     }
 
+    if (path == '/echo') {
+      response
+        ..headers.add("Access-Control-Allow-Origin", "localhost")
+        ..headers.add("Access-Control-Allow-Methods", "POST, GET")
+        ..statusCode = 200
+        ..contentLength = 31
+        ..write('object');
+      unawaited(response.close());
+      return;
+    }
+
     if (path == '/redirect') {
       response
         ..statusCode = 302