feat: enable flavor option on test command (#89045)

dev/devicelab/bin/tasks/flavors_test.dart

@@ -4,9 +4,15 @@
 
 import 'package:flutter_devicelab/framework/devices.dart';
 import 'package:flutter_devicelab/framework/framework.dart';
+import 'package:flutter_devicelab/framework/task_result.dart';
 import 'package:flutter_devicelab/tasks/integration_tests.dart';
 
 Future<void> main() async {
   deviceOperatingSystem = DeviceOperatingSystem.android;
-  await task(createFlavorsTest());
+  await task(() async {
+    await createFlavorsTest().call();
+    await createIntegrationTestFlavorsTest().call();
+
+    return TaskResult.success(null);
+  });
 }

dev/devicelab/bin/tasks/flavors_test_ios.dart

@@ -4,9 +4,15 @@
 
 import 'package:flutter_devicelab/framework/devices.dart';
 import 'package:flutter_devicelab/framework/framework.dart';
+import 'package:flutter_devicelab/framework/task_result.dart';
 import 'package:flutter_devicelab/tasks/integration_tests.dart';
 
 Future<void> main() async {
   deviceOperatingSystem = DeviceOperatingSystem.ios;
-  await task(createFlavorsTest());
+  await task(() async {
+    await createFlavorsTest().call();
+    await createIntegrationTestFlavorsTest().call();
+
+    return TaskResult.success(null);
+  });
 }

dev/devicelab/bin/tasks/flavors_test_win.dart

@@ -4,9 +4,15 @@
 
 import 'package:flutter_devicelab/framework/devices.dart';
 import 'package:flutter_devicelab/framework/framework.dart';
+import 'package:flutter_devicelab/framework/task_result.dart';
 import 'package:flutter_devicelab/tasks/integration_tests.dart';
 
 Future<void> main() async {
   deviceOperatingSystem = DeviceOperatingSystem.android;
-  await task(createFlavorsTest());
+  await task(() async {
+    await createFlavorsTest().call();
+    await createIntegrationTestFlavorsTest().call();
+
+    return TaskResult.success(null);
+  });
 }

dev/devicelab/lib/tasks/integration_tests.dart

@@ -29,6 +29,14 @@ TaskFunction createFlavorsTest() {
   );
 }
 
+TaskFunction createIntegrationTestFlavorsTest() {
+  return IntegrationTest(
+    '${flutterDirectory.path}/dev/integration_tests/flavors',
+    'integration_test/integration_test.dart',
+    extraOptions: <String>['--flavor', 'paid'],
+  );
+}
+
 TaskFunction createExternalUiIntegrationTest() {
   return DriverTest(
     '${flutterDirectory.path}/dev/integration_tests/external_ui',
@@ -166,10 +174,16 @@ class DriverTest {
 }
 
 class IntegrationTest {
-  IntegrationTest(this.testDirectory, this.testTarget);
+  IntegrationTest(
+    this.testDirectory,
+    this.testTarget, {
+      this.extraOptions = const <String>[],
+    }
+  );
 
   final String testDirectory;
   final String testTarget;
+  final List<String> extraOptions;
 
   Future<TaskResult> call() {
     return inDirectory<TaskResult>(testDirectory, () async {
@@ -183,6 +197,7 @@ class IntegrationTest {
         '-d',
         deviceId,
         testTarget,
+        ...extraOptions,
       ];
       await flutter('test', options: options);
 

dev/integration_tests/flavors/integration_test/integration_test.dart

@@ -0,0 +1,21 @@
+// Copyright 2014 The Flutter Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+import 'package:flavors/main.dart' as app;
+import 'package:flutter_test/flutter_test.dart';
+import 'package:integration_test/integration_test.dart';
+
+void main() {
+  IntegrationTestWidgetsFlutterBinding.ensureInitialized();
+
+  group('Flavor Test', () {
+    testWidgets('check flavor', (WidgetTester tester) async {
+      app.runMainApp();
+      await tester.pumpAndSettle();
+      await tester.pumpAndSettle();
+
+      expect(find.text('paid'), findsOneWidget);
+    });
+  });
+}

dev/integration_tests/flavors/lib/main.dart

@@ -8,6 +8,10 @@ import 'package:flutter_driver/driver_extension.dart';
 
 void main() {
   enableFlutterDriverExtension();
+  runMainApp();
+}
+
+void runMainApp() {
   runApp(const Center(child: Flavor()));
 }
 

packages/flutter_tools/lib/src/commands/test.dart

@@ -73,6 +73,7 @@ class TestCommand extends FlutterCommand with DeviceBasedDevelopmentArtifacts {
     usesDartDefineOption();
     usesWebRendererOption();
     usesDeviceUserOption();
+    usesFlavorOption();
 
     argParser
       ..addMultiOption('name',

packages/flutter_tools/test/commands.shard/hermetic/test_test.dart

@@ -605,6 +605,32 @@ dev_dependencies:
     ]),
   });
 
+  testUsingContext('Integration tests given flavor', () async {
+    final FakeFlutterTestRunner testRunner = FakeFlutterTestRunner(0);
+
+    final TestCommand testCommand = TestCommand(testRunner: testRunner);
+    final CommandRunner<void> commandRunner = createTestCommandRunner(testCommand);
+
+    await commandRunner.run(const <String>[
+      'test',
+      '--no-pub',
+      '--flavor',
+      'dev',
+      'integration_test',
+    ]);
+
+    expect(
+      testRunner.lastDebuggingOptionsValue.buildInfo.flavor,
+      contains('dev'),
+    );
+  }, overrides: <Type, Generator>{
+    FileSystem: () => fs,
+    ProcessManager: () => FakeProcessManager.any(),
+    DeviceManager: () => _FakeDeviceManager(<Device>[
+      FakeDevice('ephemeral', 'ephemeral', type: PlatformType.android),
+    ]),
+  });
+
   testUsingContext('Builds the asset manifest by default', () async {
     final FakeFlutterTestRunner testRunner = FakeFlutterTestRunner(0);