unit-testing - flutter 单元测试失败

Question

我试图在 Flutter 中进行单元测试。

在 pubspec.yaml 中包含依赖项:

测试:任意

运行 flutter analyze 不会显示任何警告。

在我的项目的test文件夹下创建了一个unit_test.dart:

import 'package:test/test.dart';

void main()
{
    test('this is a test', (){
        expect(42, equals(42));
        //expect(42,42);
    });
}

运行 flutter test 显示以下错误:

➜  HelloFlutter flutter test test/unit_test.dart
00:00 +0: loading /home/tr/programs/HelloFlutter/test/unit_test.dart            00:00 +0 -1: loading /home/tr/programs/HelloFlutter/test/unit_test.dart         00:00 +0 -1: loading /home/tr/programs/HelloFlutter/test/unit_test.dart                            
  Failed to load "/home/tr/programs/HelloFlutter/test/unit_test.dart": Failed assertion: boolean expression must not be null
  package:test              test
  test/unit_test.dart 6:2   main
  dart:async                _StreamController.add
  websocket_impl.dart 1111  _WebSocketImpl._WebSocketImpl._fromSocket.<fn>
  dart:async                _EventSinkWrapper.add
  websocket_impl.dart 333   _WebSocketProtocolTransformer._messageFrameEnd
  websocket_impl.dart 228   _WebSocketProtocolTransformer.add

00:00 +0 -1: Some tests failed.     

有什么提示吗？

Answer 1

您发布的实际测试看起来像常规的“测试”测试，而不是“flutter_test”测试。因此，您可能只想使用常规 dart 而不是通过 Flutter 的测试工具来运行它。

我们在这些情况下给出的诊断是可怕的。正在跟踪:https://github.com/flutter/flutter/issues/6187