swift - 在 Kitura 中运行单元测试时出错

Question

我是 Kitura 和 Xcode 的新手，在添加测试文件时遇到了一些问题。它似乎与@testing 指令有关。我的设置与 Kitura website 上显示的相同.当我在控制台中调用 swift build 然后 swift test 我得到以下错误:

Compile Swift Module 'testTests' (1 sources)
Linking ./.build/debug/testPackageTests.xctest/Contents/MacOS/testPackageTests
Undefined symbols for architecture x86_64:
  "__TFC4test3OkoCfT_S0_", referenced from:
      __TFC9testTests8OkoTests8test_addfT_T_ in OkoTests.swift.o
  "__TMaC4test3Oko", referenced from:
      __TFC9testTests8OkoTests8test_addfT_T_ in OkoTests.swift.o
ld: symbol(s) not found for architecture x86_64
<unknown>:0: error: link command failed with exit code 1 (use -v to see invocation)
<unknown>:0: error: build had 1 command failures
error: exit(1): /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift-build-tool -f /Users/*user*/Projects/Kitura/test/.build/debug.yaml test

然而，当我注释掉行 @testable import test 并键入 swift build 然后 swift test 然后我得到以下错误:

Compile Swift Module 'testTests' (1 sources)
/Users/*user*/Projects/Kitura/test/Tests/testTests/OkoTests.swift:6:17: error: use of unresolved identifier 'Oko'
        let o = Oko()
                ^~~
<unknown>:0: warning: 'cacheParamsComputed' is deprecated
<unknown>:0: warning: 'cacheAlphaComputed' is deprecated
<unknown>:0: warning: 'keepCacheWindow' is deprecated
<unknown>:0: error: 'memoryless' is unavailable
Metal.MTLCommandBufferError:19:14: note: 'memoryless' has been explicitly marked unavailable here
        case memoryless
             ^
<unknown>:0: error: build had 1 command failures
error: exit(1): /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift-build-tool -f /Users/*user*/Projects/Kitura/test/.build/debug.yaml test

当我尝试从 Xcode 生成的项目(swift package generate-xcodeproj)对其进行测试时，出现编译错误:

没有测试文件，一切正常。下面我介绍项目结构:

Answer 1

我认为问题是 Swift 无法为包含 main.swift 文件的模块编译单元测试(即，要编译成可执行文件而不是库的模块在其他项目中使用)。我克隆了您的存储库，并能够在 1) 删除 main.swift 和 2) 取消注释可测试的导入语句后编译和运行单元测试。