在Kitura中运行单元测试时出错

Question

我对Kitura和Xcode很陌生，在添加测试文件时也会遇到一些问题。它似乎与@testing指令有关。我已经设置了与Kitura网站上显示的相同的设置。当我在控制台中调用迅速构建，然后调用快捷测试时，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

但是，当我注释掉行@testable导入测试并键入迅速构建，然后是测试时，我会得到以下错误：

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生成的项目测试它(快速包生成-xcodeproj)时，我会得到编译错误：

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没有测试文件，一切都正常工作。下文介绍项目结构：

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Answer 1

我认为问题在于Swift无法为包含main.swift文件的模块编译单元测试(也就是说，与用于其他项目的库相比，这些模块被编译成可执行文件)。我克隆了您的repo，并在删除main.swift和2)取消对可测试导入语句的注释之后，能够编译和运行单元测试。