Flutter 集成测试：我可以在任何页面上开始测试吗？ 如何？

Question

所以我正在测试一个有多个页面的应用程序。

有时，我只想从选择的页面开始测试。

但是，我不知道该怎么做。

在我所见的任何地方，每个人总是从一开始就通过调用main()开始他们的集成测试。

这是有道理的，但我的情况是独一无二的。 我尝试导入要开始的页面，并尝试调用主类，但出现以下错误：

The constructor returns type 'dynamic' that isn't of expected type 'widget'.

我的堆栈还指出：

When the exception was thrown, this was the stack:
#4      main.<anonymous closure>.<anonymous closure> (file:///D:/WEBDEV/EndevStudios/MedicalApp/gshDevWork/medical-app-frontend/integration_test/basic_app_test.dart:94:7)
<asynchronous suspension>
<asynchronous suspension>
(elided one frame from package:stack_trace)

我认为我试图调用的类不是这样构建的。 这是该代码的开头部分：

class WelcomePage extends StatelessWidget {
  final String title = "Welcome!";
  final String titleDev = "Take Control of your Health!";
  final String boxDescription =
      "It is for information purposes only and help you access health professionals through virtual means as well as screen for a selection of diseases.";
  final String innerContainerTextTitle =
      "WARNING! This application is not a diagnosing tool.";
  final String descriptionTitle = 'App Features:';
  final String descriptionTitle1 =
      "Technology to analyze a selection of diseases.";
    final String descriptionTitle2 =
      "Resources to learn about different types of diseases; typical treatments; and management standards.";
  final String _titleImagePath = 'assets/appbar/diagnosis.webp';
  WelcomePage();

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      resizeToAvoidBottomInset: false,
      appBar: _buildAppbar(context),
      body: Container(
          width: displayWidth(context),
          height: displayHeight(context),
          alignment: Alignment.center,
          child: Column(
            mainAxisAlignment: MainAxisAlignment.spaceBetween,
            children: [
              // _logoImage(context),
              _welcomeInfo(context),
            ],
          )),
    );
  }

在我的测试中，我调用app.WelcomePage();

Answer 1

integration_test将用于运行 Screen/Page/Widget。 这可以通过使用pumpWidget方法来执行。

pumpWidget：从给定的 [widget] 渲染 UI。 所以任何东西都可以在屏幕上绘制和测试。

例子：

testWidgets('Welcome Page Test', (WidgetTester tester) async {
    /// Build our app and trigger a frame.
    
      await tester.pumpWidget(const WelcomePage());

   ///...
 });