[firebase_messaging] add integration tests (flutter#1816)

* Initial firebase_messaging integration tests

Author: collinjackson

packages/firebase_messaging/CHANGELOG.md

@@ -1,3 +1,7 @@
+## 5.0.6
+
+* Additional integration tests.
+
 ## 5.0.5
 
 * On Android, fix crash when calling `deleteInstanceID` with latest Flutter engine.

packages/firebase_messaging/example/pubspec.yaml

@@ -8,47 +8,12 @@ dependencies:
     path: ../
   firebase_core: ^0.4.0
 
-# For information on the generic Dart part of this file, see the
-# following page: https://www.dartlang.org/tools/pub/pubspec
+dev_dependencies:
+  flutter_test:
+    sdk: flutter
+  flutter_driver:
+    sdk: flutter
+  test: any
 
-# The following section is specific to Flutter.
 flutter:
-
-  # The following line ensures that the Material Icons font is
-  # included with your application, so that you can use the icons in
-  # the Icons class.
   uses-material-design: true
-
-  # To add assets to your application, add an assets section here, in
-  # this "flutter" section, as in:
-  # assets:
-  #  - images/a_dot_burr.jpeg
-  #  - images/a_dot_ham.jpeg
-
-  # To add assets from package dependencies, first ensure the asset
-  # is in the lib/ directory of the dependency. Then,
-  # refer to the asset with a path prefixed with
-  # `packages/PACKAGE_NAME/`. Note: the `lib/` is implied, do not
-  # include `lib/` in the asset path.
-  #
-  # Here is an example:
-  #
-  # assets:
-  #  - packages/PACKAGE_NAME/path/to/asset
-
-  # To add custom fonts to your application, add a fonts section here,
-  # in this "flutter" section. Each entry in this list should have a
-  # "family" key with the font family name, and a "fonts" key with a
-  # list giving the asset and other descriptors for the font. For
-  # example:
-  # fonts:
-  #   - family: Schyler
-  #     fonts:
-  #       - asset: fonts/Schyler-Regular.ttf
-  #       - asset: fonts/Schyler-Italic.ttf
-  #         style: italic
-  #   - family: Trajan Pro
-  #     fonts:
-  #       - asset: fonts/TrajanPro.ttf
-  #       - asset: fonts/TrajanPro_Bold.ttf
-  #         weight: 700

packages/firebase_messaging/example/test_driver/firebase_messaging.dart

@@ -0,0 +1,34 @@
+import 'dart:async';
+import 'package:flutter_driver/driver_extension.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:firebase_messaging/firebase_messaging.dart';
+
+void main() {
+  final Completer<String> completer = Completer<String>();
+  enableFlutterDriverExtension(handler: (_) => completer.future);
+  tearDownAll(() => completer.complete(null));
+
+  group('$FirebaseMessaging', () {
+    final FirebaseMessaging firebaseMessaging = FirebaseMessaging();
+
+    test('autoInitEnabled', () async {
+      await firebaseMessaging.setAutoInitEnabled(false);
+      expect(await firebaseMessaging.autoInitEnabled(), false);
+      await firebaseMessaging.setAutoInitEnabled(true);
+      expect(await firebaseMessaging.autoInitEnabled(), true);
+    });
+
+    test('subscribeToTopic', () async {
+      firebaseMessaging.subscribeToTopic('foo');
+    });
+
+    test('unsubscribeFromTopic', () async {
+      firebaseMessaging.unsubscribeFromTopic('foo');
+    });
+
+    test('deleteInstanceID', () async {
+      final bool result = await firebaseMessaging.deleteInstanceID();
+      expect(result, isTrue);
+    });
+  });
+}

packages/firebase_messaging/example/test_driver/firebase_messaging_test.dart

@@ -0,0 +1,7 @@
+import 'package:flutter_driver/flutter_driver.dart';
+
+Future<void> main() async {
+  final FlutterDriver driver = await FlutterDriver.connect();
+  await driver.requestData(null, timeout: const Duration(minutes: 1));
+  driver.close();
+}

packages/firebase_messaging/pubspec.yaml

@@ -3,7 +3,7 @@ description: Flutter plugin for Firebase Cloud Messaging, a cross-platform
   messaging solution that lets you reliably deliver messages on Android and iOS.
 author: Flutter Team <flutter-dev@googlegroups.com>
 homepage: https://github.com/flutter/plugins/tree/master/packages/firebase_messaging
-version: 5.0.5
+version: 5.0.6
 
 flutter:
   plugin:
@@ -23,6 +23,8 @@ dev_dependencies:
   flutter_test:
     sdk: flutter
   firebase_core: ^0.4.0
+  flutter_driver:
+    sdk: flutter
 
 environment:
   sdk: ">=2.0.0-dev.28.0 <3.0.0"