Sample driver test working on Fuchsia (#45652)

* [flutter_driver] [fuchsia] Validate existance of cmx for driver tests

Also added an example driver test that can run on Fuchsia devices.

Fixes: https://github.com/flutter/flutter/issues/45624

* update packages for stock example

* fix licenses

examples/stocks/lib/stock_row.dart

@@ -35,6 +35,7 @@ class StockRow extends StatelessWidget {
     if (stock.percentChange > 0)
       changeInPrice = '+' + changeInPrice;
     return InkWell(
+      key: ValueKey<String>(stock.symbol),
       onTap: _getHandler(onPressed),
       onDoubleTap: _getHandler(onDoubleTap),
       onLongPress: _getHandler(onLongPressed),

examples/stocks/lib/stock_symbol_viewer.dart

@@ -30,6 +30,7 @@ class _StockSymbolView extends StatelessWidget {
             children: <Widget>[
               Text(
                 '${stock.symbol}',
+                key: ValueKey<String>('${stock.symbol}_symbol_name'),
                 style: Theme.of(context).textTheme.display2,
               ),
               arrow,

examples/stocks/pubspec.yaml

@@ -50,17 +50,35 @@ dev_dependencies:
     sdk: flutter
   flutter_driver:
     sdk: flutter
+  test: 1.9.4
 
   archive: 2.0.11 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   boolean_selector: 1.0.5 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
+  coverage: 0.13.3+1 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   file: 5.1.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
+  http_multi_server: 2.1.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   image: 2.1.4 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
+  io: 0.3.3 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   json_rpc_2: 2.1.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
+  logging: 0.11.3+2 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   matcher: 0.12.6 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
+  mime: 0.9.6+3 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
+  multi_server_socket: 1.0.2 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
+  node_preamble: 1.4.8 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
+  package_resolver: 1.0.10 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
+  pool: 1.4.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   quiver: 2.0.5 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
+  shelf: 0.7.5 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
+  shelf_packages_handler: 1.0.4 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
+  shelf_static: 0.2.8 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
+  shelf_web_socket: 0.2.3 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
+  source_map_stack_trace: 1.1.5 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
+  source_maps: 0.10.8 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   stack_trace: 1.9.3 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   stream_channel: 2.0.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   test_api: 0.2.11 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
+  test_core: 0.2.15 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
+  vm_service: 1.2.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   vm_service_client: 0.2.6+2 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   web_socket_channel: 1.1.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   xml: 3.5.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
@@ -68,4 +86,4 @@ dev_dependencies:
 flutter:
   uses-material-design: true
 
-# PUBSPEC CHECKSUM: 4d8f
+# PUBSPEC CHECKSUM: e110

examples/stocks/test_driver/scroll_perf_test.dart

@@ -5,8 +5,7 @@
 import 'dart:async';
 
 import 'package:flutter_driver/flutter_driver.dart';
-// ignore: deprecated_member_use
-import 'package:test_api/test_api.dart' hide TypeMatcher, isInstanceOf;
+import 'package:test/test.dart' hide TypeMatcher, isInstanceOf;
 
 void main() {
   group('scrolling performance test', () {

examples/stocks/test_driver/stock_view.dart

+// 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:flutter_driver/driver_extension.dart';
+import 'package:stocks/main.dart' as app;
+
+void main() {
+  enableFlutterDriverExtension();
+  app.main();
+}

examples/stocks/test_driver/stock_view_test.dart

+// 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 'dart:async';
+
+import 'package:flutter_driver/flutter_driver.dart';
+import 'package:test/test.dart' hide TypeMatcher, isInstanceOf;
+
+void main() {
+  group('basic stock view test', () {
+    FlutterDriver driver;
+
+    setUpAll(() async {
+      driver = await FlutterDriver.connect();
+    });
+
+    tearDownAll(() async {
+      if (driver != null)
+        driver.close();
+    });
+
+    test('open AAPL stock', () async {
+      final SerializableFinder stockList = find.byValueKey('stock-list');
+      expect(stockList, isNotNull);
+
+      final SerializableFinder aaplStockRow = find.byValueKey('AAPL');
+      await driver.scrollUntilVisible(stockList, aaplStockRow);
+
+      await driver.tap(aaplStockRow);
+      await Future<void>.delayed(const Duration(milliseconds: 500));
+
+      final SerializableFinder stockOption = find.byValueKey('AAPL_symbol_name');
+      final String symbol = await driver.getText(stockOption, timeout: const Duration(milliseconds: 500));
+
+      expect(symbol, 'AAPL');
+    });
+  });
+}

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

@@ -5,7 +5,6 @@
 import 'dart:async';
 
 import '../base/common.dart';
-import '../base/file_system.dart';
 import '../base/platform.dart';
 import '../build_info.dart';
 import '../cache.dart';
@@ -63,13 +62,6 @@ class BuildFuchsiaCommand extends BuildSubCommand {
     if (!flutterProject.fuchsia.existsSync()) {
       throwToolExit('No Fuchsia project is configured.');
     }
-    final String appName = flutterProject.fuchsia.project.manifest.appName;
-    final String cmxPath = fs.path.join(
-        flutterProject.fuchsia.meta.path, '$appName.cmx');
-    final File cmxFile = fs.file(cmxPath);
-    if (!cmxFile.existsSync()) {
-      throwToolExit('The Fuchsia build requires a .cmx file at $cmxPath for the app.');
-    }
     await buildFuchsia(
       fuchsiaProject: flutterProject.fuchsia,
       target: targetFile,

packages/flutter_tools/lib/src/fuchsia/fuchsia_build.dart

@@ -32,6 +32,15 @@ Future<void> _timedBuildStep(String name, Future<void> Function() action) async
   flutterUsage.sendTiming('build', name, Duration(milliseconds: sw.elapsedMilliseconds));
 }
 
+Future<void> _validateCmxFile(FuchsiaProject fuchsiaProject) async {
+  final String appName = fuchsiaProject.project.manifest.appName;
+  final String cmxPath = fs.path.join(fuchsiaProject.meta.path, '$appName.cmx');
+  final File cmxFile = fs.file(cmxPath);
+  if (!await cmxFile.exists()) {
+    throwToolExit('The Fuchsia build requires a .cmx file at $cmxPath for the app: $appName.');
+  }
+}
+
 // Building a Fuchsia package has a few steps:
 // 1. Do the custom kernel compile using the kernel compiler from the Fuchsia
 //    SDK. This produces .dilp files (among others) and a manifest file.
@@ -45,6 +54,7 @@ Future<void> buildFuchsia({
   BuildInfo buildInfo = BuildInfo.debug,
   String runnerPackageSource = FuchsiaPackageServer.toolHost,
 }) async {
+  await _validateCmxFile(fuchsiaProject);
   final Directory outDir = fs.directory(getFuchsiaBuildDirectory());
   if (!outDir.existsSync()) {
     outDir.createSync(recursive: true);