Question

我的测试已经有效，但是当我将Flutter升级到新版本时，当我使用

从命令行运行它时会出现错误

flutter test test/widget_test.dart

错误是

00:05 +0 -1: loading /Users/lenz/plug_and_plink/test/widget_test.dart [E]                                                                                                                           
  Failed to load "/Users/lenz/project/test/widget_test.dart": type '(WidgetTester) => Future<Null>' is not a subtype of type '() => dynamic'
  package:flutter_test/src/test_compat.dart 171:29  test
  test/widget_test.dart 53:3                        main

00:05 +0 -1: Some tests failed.

当我尝试从Android Studio UI运行测试时，它给出了另一个错误：

file:///Users/lenz/development/flutter/packages/flutter/lib/src/material/animated_icons.dart:9:8: Error: Not found: 'dart:ui'
import 'dart:ui' as ui show Paint, Path, Canvas;
       ^
file:///Users/lenz/development/flutter/packages/flutter/lib/src/material/animated_icons.dart:10:8: Error: Not found: 'dart:ui'
import 'dart:ui' show lerpDouble;
       ^
file:///Users/lenz/development/flutter/packages/flutter/lib/src/material/app.dart:5:8: Error: Not found: 'dart:ui'
import 'dart:ui' as ui;

关于'dart：ui'的更多内容怎样使它再次工作？

Answer 1

我通过删除flutter目录中的/ bin / cache /文件夹解决了该问题。之后，需要运行

flutter precache

从命令行

。似乎在flutter升级时这些文件没有更新

如果出现以下错误，如何在小部件运行中进行小部件测试？

1 个答案: