It's very easy to setup parallel tests for rspec or cucumber on CircleCI:
test:
override:
- bundle exec rspec:
parallel: true
files:
- spec/unit/sample.rb # can be a direct path to file
- spec/**/*.rb # or a glob (ruby globs)
However I try to split protractor tests. It takes comma separated files as a command line argument instead of space separated files. How can I achieve this without too much work?