XCode and RubyMotion - rake spec - permission error

Question

I am trying to get a RubyMotion setup on my Mac (High Sierra) to run.

Everything worked great until i tried to implement testing. I can get the iPhone simulator to run and see my app on my screen when i run rake.

RubyMotion generates a default spec file spec/main_spec.rb and whenever i try to run rake spec from a newly created projekt (motion create Project) i get the following error:

Cannot write into the `/Users/bruger/Library/RubyMotion/build' directory, please remove or check permissions and try again.

The strange thing is: there is no such folder in the RubyMotion folder and the other folder is read, write and execute for the owner (me).

When i look at others example with a succesfull test run, i can see that their code is called from the current folder like this:

Build ./some_path
Compile ./some_other_path
Link ./some_third_path

If i run the same command with --trace i get this output:

** Invoke spec (first_time)
** Invoke spec:simulator (first_time)
** Execute spec:simulator
** Invoke simulator (first_time)
** Execute simulator
** Invoke build:simulator (first_time)
** Execute build:simulator
rm -f ./build/iPhoneSimulator-11.3-Development/APP_spec.app/Info.plist
Cannot write into the `/Users/bruger/Library/RubyMotion/build' directory, please remove or check permissions and try again.

So it is trying to delete Info.plist from a path based on the current folder and then get a permission error in a totally different folder?

Why is this?

Answer 1

Please try the following steps to help diagnose your issue:

1. Ensure that you have the latest version of Xcode installed, and that Xcode was started, and all it's components were installed.
2. sudo motion update which will ensure you have the latest version of RubyMotion, templates etc.
3. Create a new project from scratch, and run rake spec

Also note that the RubyMotion community is most active on Slack, and you will get answers there faster. You can join at https://motioneers.herokuapp.com