Get rid of unused imports

Fixes issues raised by the analyzer similar t:

* info • Unused import: 'package:flutter/foundation.dart' • lib/src/create_notification.dart:2:8 • unused_import
   info • The import of 'package:onesignal_flutter/src/notification.dart' is unnecessary because all of the used elements are also provided by the import of
* 'package:onesignal_flutter/onesignal_flutter.dart' • lib/src/create_notification.dart:3:8 • unnecessary_import

Author: iAmWillShepherd

lib/src/create_notification.dart

@@ -1,6 +1,4 @@
 import 'package:onesignal_flutter/src/utils.dart';
-import 'package:flutter/foundation.dart';
-import 'package:onesignal_flutter/src/notification.dart';
 import 'package:onesignal_flutter/onesignal_flutter.dart';
 
 /// The parameters & format to create push notifications is

lib/src/notification.dart

@@ -1,15 +1,12 @@
-import 'package:onesignal_flutter/src/defines.dart';
 import 'package:onesignal_flutter/src/utils.dart';
 import 'package:onesignal_flutter/onesignal_flutter.dart';
-import 'package:flutter/foundation.dart';
 import 'dart:convert';
 
 /// A class representing the notification, including the
 /// payload of the notification as well as additional
 /// parameters (such as whether the notification was `shown`
 /// to the user, whether it's `silent`, etc.)
 class OSNotification extends JSONStringRepresentable {
-
   /// The OneSignal notification ID for this notification
   late String notificationId;
 
@@ -188,8 +185,7 @@ class OSNotification extends JSONStringRepresentable {
       this.mutableContent = json['mutableContent'] as bool?;
     if (json.containsKey('category'))
       this.category = json['category'] as String?;
-    if (json.containsKey('badge')) 
-      this.badge = json['badge'] as int?;
+    if (json.containsKey('badge')) this.badge = json['badge'] as int?;
     if (json.containsKey('badgeIncrement'))
       this.badgeIncrement = json['badgeIncrement'] as int?;
     if (json.containsKey('subtitle'))
@@ -222,8 +218,7 @@ class OSNotification extends JSONStringRepresentable {
       this.fromProjectNumber = json['fromProjectNumber'] as String?;
     if (json.containsKey("collapseId"))
       this.collapseId = json['collapseId'] as String?;
-    if (json.containsKey("priority")) 
-      this.priority = json['priority'] as int?;
+    if (json.containsKey("priority")) this.priority = json['priority'] as int?;
     if (json.containsKey("androidNotificationId"))
       this.androidNotificationId = json['androidNotificationId'] as int?;
     if (json.containsKey('backgroundImageLayout')) {
@@ -232,24 +227,23 @@ class OSNotification extends JSONStringRepresentable {
     }
     if (json.containsKey('groupedNotifications')) {
       final dynamic jsonGroupedNotifications = json['groupedNotifications'];
-      final jsonList = jsonDecode(jsonGroupedNotifications.toString()) as List<dynamic>;
-      this.groupedNotifications = jsonList.map((dynamic item) =>
-          OSNotification(item as Map<String, dynamic>)).toList();
+      final jsonList =
+          jsonDecode(jsonGroupedNotifications.toString()) as List<dynamic>;
+      this.groupedNotifications = jsonList
+          .map((dynamic item) => OSNotification(item as Map<String, dynamic>))
+          .toList();
     }
-    
+
     // shared parameters
     this.notificationId = json['notificationId'] as String;
 
     if (json.containsKey('templateName'))
       this.templateName = json['templateName'] as String?;
     if (json.containsKey('templateId'))
       this.templateId = json['templateId'] as String?;
-    if (json.containsKey('sound')) 
-      this.sound = json['sound'] as String?;
-    if (json.containsKey('title'))
-      this.title = json['title'] as String?;
-    if (json.containsKey('body')) 
-      this.body = json['body'] as String?;
+    if (json.containsKey('sound')) this.sound = json['sound'] as String?;
+    if (json.containsKey('title')) this.title = json['title'] as String?;
+    if (json.containsKey('body')) this.body = json['body'] as String?;
     if (json.containsKey('launchUrl'))
       this.launchUrl = json['launchUrl'] as String?;
     if (json.containsKey('additionalData'))
@@ -382,25 +376,25 @@ class OSAndroidBackgroundImageLayout extends JSONStringRepresentable {
 }
 
 class OSNotificationReceivedEvent extends JSONStringRepresentable {
-
   late OSNotification notification;
 
   OSNotificationReceivedEvent(Map<String, dynamic> json) {
     notification = OSNotification(json);
   }
 
   void complete(OSNotification? notification) {
-    print('OSNotificationReceivedEvent complete with notification: $notification');
+    print(
+        'OSNotificationReceivedEvent complete with notification: $notification');
     if (notification != null) {
-        OneSignal.shared.completeNotification(notification.notificationId, true);
+      OneSignal.shared.completeNotification(notification.notificationId, true);
     } else {
-        OneSignal.shared.completeNotification(this.notification.notificationId, false);
+      OneSignal.shared
+          .completeNotification(this.notification.notificationId, false);
     }
   }
 
   String jsonRepresentation() {
-    return convertToJsonString({
-      'notification': this.notification.jsonRepresentation()
-    });
+    return convertToJsonString(
+        {'notification': this.notification.jsonRepresentation()});
   }
-}
+}

test/mock_channel.dart

@@ -1,4 +1,3 @@
-import 'dart:async';
 import 'package:flutter/services.dart';
 import 'package:onesignal_flutter/onesignal_flutter.dart';
 import 'package:flutter_test/flutter_test.dart';
@@ -63,14 +62,16 @@ class OneSignalMockChannelController {
         this.state.deleteTags = call.arguments;
         return {"success": true};
       case "OneSignal#setExternalUserId":
-        this.state.externalId = (call.arguments as Map<dynamic, dynamic>)['externalUserId'] as String?;
-        return {"success" : true};
+        this.state.externalId = (call.arguments
+            as Map<dynamic, dynamic>)['externalUserId'] as String?;
+        return {"success": true};
       case "OneSignal#removeExternalUserId":
         this.state.externalId = null;
-        return {"success" : true};
+        return {"success": true};
       case "OneSignal#setLanguage":
-        this.state.language = (call.arguments as Map<dynamic, dynamic>)['language'] as String?;
-        return {"success" : true};
+        this.state.language =
+            (call.arguments as Map<dynamic, dynamic>)['language'] as String?;
+        return {"success": true};
     }
   }
 }

test/notification_test.dart

@@ -1,15 +1,13 @@
 import 'package:test/test.dart';
 import 'package:onesignal_flutter/src/notification.dart';
-import 'package:onesignal_flutter/src/defines.dart';
 import 'test_data.dart';
 
 void main() {
   final notificationJson = TestData.jsonForTest('notification_parsing_test');
   final notification = OSNotification(notificationJson);
 
   test('expect notification ID to be set', () {
-    expect(notification.notificationId,
-        "8e0eeec2-aa42-4ff7-a74b-bce9ca9e588b");
+    expect(notification.notificationId, "8e0eeec2-aa42-4ff7-a74b-bce9ca9e588b");
   });
 
   test('expect buttons to be parsed correctly', () {