因此，在尝试了之前建议的所有解决方案后，这就是我如何让我的代码工作的。

I set 'Enable testability' to 'YES' in project's Build Settings I also set 'Defines Module' to 'YES' in my project's Build Settings. For the regular .swift file(s) within my project, say MyApp, I was going to write test cases for, I have both the main "MyApp" and the "MyAppUnitTests" Targets checked under Target Membership. I then selected my unit test file(s), declared the '@testable import MyApp' at the top, beneath the 'import XCTest', and only checked the "MyAppUnitTests" under Target membership

一切都很顺利。希望这能有所帮助。

对我来说，问题是测试的iOS部署目标没有设置为与主目标相同。所以一定要检查这个。

在您的测试目标中:

Build Settings -> iOS Deployment Target -> iOS<same as the target you are testing>

这是我在Xcode 13.1中使用的方法:

在Xcode Preferences > Locations的Locations选项卡中，我定义了一个自定义位置:

这不仅导致单元测试失败，出现可怕的“没有这样的模块”错误，而且还导致“命令CodeSign失败，退出码非零”和其他警告和错误。

将设置更改为唯一:

解决了所有问题。

因此，在尝试了之前建议的所有解决方案后，这就是我如何让我的代码工作的。

I set 'Enable testability' to 'YES' in project's Build Settings I also set 'Defines Module' to 'YES' in my project's Build Settings. For the regular .swift file(s) within my project, say MyApp, I was going to write test cases for, I have both the main "MyApp" and the "MyAppUnitTests" Targets checked under Target Membership. I then selected my unit test file(s), declared the '@testable import MyApp' at the top, beneath the 'import XCTest', and only checked the "MyAppUnitTests" under Target membership

一切都很顺利。希望这能有所帮助。

XCode 12开发Beta 3

这个错误在我第一次构建项目后自行修复了。

对我来说，解决办法就是重新命名 导入myproject_ios 来 导入myproject 在我更新了目标myproject-ios的产品名称在构建设置/包装/产品名称/从${TARGET_NAME}到myproject。