Passing arguments to iOS tests with xcodebuild

Question

I\'d like to pass command line arguments to my iOS tests through the command line (xcodebuild). I\'m looking for the equivalent of this setting on XCode:

Simply

Answer 1

I didn't manage to find "easy" solution. So instead I split testing in 3 steps:
1. Run xcodebuild build-for-testing. It will generate xctestrun file in derived data, which contains list of launch arguments
2. Add your desire launch arguments here
3. run xcodebuild test-without-building -xctestrun <%path_to_file_here%>

I wrote script for it. It still need some improvements, so in close time I will share its final form.

Edit: Never had time to update script. So here ugly versions, that suit our needs. https://gist.github.com/ManWithBear/57cbabc8dcd0193d156c376d2d23ff02

Answer 2

To add to @ManWithBear's answer, I ended up doing this in a script:

#Remove previous command line arguments
/usr/libexec/PlistBuddy -c "Delete DetoxTestRunner:CommandLineArguments" "$TESTRUN" || true
#Add an empty array
/usr/libexec/PlistBuddy -c "Add DetoxTestRunner:CommandLineArguments array" "$TESTRUN"

#Add script arguments as launch arguments of the test runner app
for i in $*; do
  /usr/libexec/PlistBuddy -c "Add DetoxTestRunner:CommandLineArguments: string '$i'" "$TESTRUN"
done

In the code above, I add all arguments passed to a script as launch argument to the tester app. DetoxTestRunner is the name if the test scheme/target.