Flutter集成测试中提交TextField

Question

我有一个简单的文本字段，当用户在文本字段中提交值时，它会执行某些操作：

TextField(
        textInputAction: TextInputAction.search,
        onSubmitted: onSearchEmail,
      )

足够简单......我正在尝试编写一个集成测试，检查用户提交文本字段时执行的操作 - 但是我无法弄清楚如何模拟用户按下键盘上的“搜索”按钮（ android) 或 iOS 中的任何等效项...

我天真地尝试过driver.enterText("a@b.c\r\n");，但没有成功。

我的集成测试：

test('entering email performs a search', () async {
  driver.tap(find.byValueKey('search-email-search-box'));
  driver.enterText("a@b.c\r\n"); // <- doesn't work
  await driver.waitFor(find.text("some text));
});

我真的不希望用户必须按下屏幕上的按钮，键盘按钮工作正常。

编辑：只是为了澄清 - 文本被输入到该字段中，以便该位起作用，只是提交不起作用。

Answer 1

Flutter Driver 还是没有触发的功能onFieldSubmitted。我按照此处提到的解决方法触发了TextInputAction. 该解决方法适用于integration_test——当前在 Flutter 中编写集成测试的推荐方法。

令目标测试脚本为：

即位于/integration_test/foo_test.dart

import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:integration_test/integration_test.dart';
import 'package:sample55101120/main.dart' as app;

void main() {
  IntegrationTestWidgetsFlutterBinding.ensureInitialized();

  testWidgets("TextFormField Test", (WidgetTester tester) async {
    // Build the app and trigger a frame.
    await tester.pumpWidget(app.MyApp());

    /// Find TextFormField widget by Key and enter text
    await tester.enterText(find.byKey(Key('search-email-search-box')), 'a@b.c');
    await tester.testTextInput.receiveAction(TextInputAction.done);
    await tester.pump();

    expect(find.text('a@b.c'), findsOneWidget);
  });
}

就test_driver/integration_test.dart这样吧

import 'package:integration_test/integration_test_driver.dart';

Future<void> main() => integrationDriver();

至于我使用过的示例应用程序：

import 'package:flutter/material.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: MyHomePage(title: 'Flutter Demo Home Page'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  MyHomePage({Key? key, required this.title}) : super(key: key);

  final String title;

  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  void onSearchEmail(String value){
    debugPrint('onSearchEmail $value');
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            TextFormField(
              key: Key('search-email-search-box'),
              textInputAction: TextInputAction.search,
              onFieldSubmitted: (String value) => onSearchEmail(value),
            ),
          ],
        ),
      ),
    );
  }
}

要运行此示例：

flutter drive --target=integration_test/foo_test.dart --driver=test_driver/integration_test.dart