如何使用 `swift test` 对 iOS package 进行单元测试？

Question

I have an iOS library with Swift package manager. I am trying to run unit tests with swift test The reason why I am not using xcodebuild is, I am trying to remove the .xcodeproj from my source control. Also, there is a warning when we create xcodeproj with spm, that generate-xcodeproj will be deprecated soon. TL;DR This library depends on Lottie I tried just running swift test in the root directory, but it gives lot of errors. like /.build/checkouts/lottie-ios/lottie-swift/src/Public/Animation/AnimationView.swift:859:11: error: cannot find 'superview' in scope I tried

swift test -Xswiftc "-sdk" -Xswiftc "`xcrun --sdk iphonesimulator --show-sdk-path`" -Xswiftc "-target" -Xswiftc "x86_64-apple-ios14.5-simulator"

Then it gives the error error: module 'XCTest' was created for incompatible target x86_64-apple-macos10.15 . I did not specify macos10.15 anywhere, I am on macOS 11.5.1

I can build the package using the above command by replacing test with build . What is wrong with my test command?

As I understand this is because I am not specifying the target simulator, is it possible to specify the target simulator with swift test ?

Answer 1

swift test only works for macOS testing. It does not support cross builds for iOS.

You do not need an existing Xcode project to use xcodebuild . Run the command, xcodebuild -list to initialize a Package.swift file for testing.

See the example here .