Code coverage profile not generated when running with xcodebuild test-without-building
Number:rdar://36907005 Date Originated:26-Jan-2018 02:45 PM
Status:Open Resolved:
Product:Developer Tools Product Version:Xcode 9.3 Beta
Classification:Serious Bug Reproducible:Always
When building the project with command line xcodebuild build-for-testing and then running tests separate with xcodebuild test-without-building code coverage profile is not generated. 
Because we are tracking code coverage in tests it prevents us from splitting building and testing between multiple machines.

Steps to Reproduce:
1. Build sample project from command line:
xcodebuild -scheme Codecov -destination 'platform=iOS Simulator,name=iPhone 8,OS=11.3' -enableCodeCoverage YES build-for-testing
2. Run tests from produced .xctestrun file:
xcodebuild -destination 'platform=iOS Simulator,name=iPhone 8,OS=11.3' -enableCodeCoverage YES -xctestrun /path/to/DerivedData/Codecov-azxfrlmhznktvjavwttdxmosuzdn/Build/Products/Codecov_iphonesimulator11.0-x86_64.xctestrun test-without-building

Expected Results:
3. Code coverage profile data is generated inside same place as when running tests from Xcode (/path/to/DerivedData/Codecov-azxfrlmhznktvjavwttdxmosuzdn/Build/ProfileData/<UUID>/Coverage.profdata)

Actual Results:
3. Code coverage profile is not generated

Xcode 9.3 Beta

This seems to be broken at least from Xcode 9.0.1 to the latest Xcode 9.3 Beta (9Q98q)


Yes this needs to be fixed I can reproduce this on xcode 10.2 as well

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