refactor test and implementation for new flutter version

Author: lohanidamodar

templates/flutter/lib/src/client_io.dart.twig

@@ -80,7 +80,7 @@ class ClientIO extends ClientBase with ClientMixin {
   @override
   String get endPoint => _endPoint;
 
-  Future<Directory> _getCookiePath() async {
+  Future<Directory> getCookiePath() async {
     final directory = await getApplicationDocumentsDirectory();
     final path = directory.path;
     final Directory dir = Directory('$path/cookies');
@@ -133,18 +133,18 @@ class ClientIO extends ClientBase with ClientMixin {
   Future init() async {
     if(_initProgress) return;
     _initProgress = true;
-    // if web skip cookie implementation and origin header as those are automatically handled by browsers
-    final Directory cookieDir = await _getCookiePath();
+    final Directory cookieDir = await getCookiePath();
     _cookieJar = PersistCookieJar(storage: FileStorage(cookieDir.path));
     _interceptors.add(CookieManager(_cookieJar));
-    PackageInfo packageInfo = await PackageInfo.fromPlatform();
-    addHeader('Origin',
-        'appwrite-${Platform.operatingSystem}://${packageInfo.packageName}');
 
-    //creating custom user agent
-    DeviceInfoPlugin deviceInfoPlugin = DeviceInfoPlugin();
     var device = '';
     try {
+      PackageInfo packageInfo = await PackageInfo.fromPlatform();
+      addHeader('Origin',
+          'appwrite-${Platform.operatingSystem}://${packageInfo.packageName}');
+
+      //creating custom user agent
+      DeviceInfoPlugin deviceInfoPlugin = DeviceInfoPlugin();
       if (Platform.isAndroid) {
         final andinfo = await deviceInfoPlugin.androidInfo;
         device =
@@ -167,12 +167,14 @@ class ClientIO extends ClientBase with ClientMixin {
         final macinfo = await deviceInfoPlugin.macOsInfo;
         device = '(Macintosh; ${macinfo.model})';
       }
+      addHeader(
+          'user-agent', '${packageInfo.packageName}/${packageInfo.version} $device');
     } catch (e) {
       debugPrint('Error getting device info: $e');
       device = Platform.operatingSystem;
+      addHeader(
+          'user-agent', '$device');
     }
-    addHeader(
-        'user-agent', '${packageInfo.packageName}/${packageInfo.version} $device');
 
     _initialized = true;
     _initProgress = false;

tests/languages/flutter/tests.dart

@@ -1,10 +1,21 @@
 import 'package:flutter/material.dart';
 import '../lib/packageName.dart';
+import '../lib/client_io.dart';
 import '../lib/models.dart';
+import 'dart:io';
+
+class MockClient extends ClientIO {
+  Future<Directory> getCookiePath() async {
+    final dir = Directory('cookies');
+    await dir.create();
+    return dir;
+  }
+}
 
 void main() async {
   WidgetsFlutterBinding.ensureInitialized();
-  Client client = Client();
+  
+  Client client = MockClient();
   Foo foo = Foo(client);
   Bar bar = Bar(client);
   General general = General(client);