This is true story.

One day, I added a utility class for JSON parsing, as UBTypedJsonDictionary. My teammate suggested to rename it to UBTypedJSONDictionary, since Foundation framework has NSJSONSerialization class. I agreed, and rename the class on Xcode. And, it broke the build on another teammate's Mac, because his Mac has case sensitive file system.

Xcode renamed filename in its project, but does not rename real file.

This command is to find such files: an source code which has differently cased name in file system than Xcode project. Run this during CI build to make sure your project can build on Mac with case sensitive file system 🍺

Add this line to your application's Gemfile:

gem 'ensure_xcode_has_no_ci_sources'

And then execute:

$ bundle

Or install it yourself as:

$ gem install ensure_xcode_has_no_ci_sources

$ ensure_xcode_has_no_ci_sources YourProject.xcodeproj

After checking out the repo, run bin/setup to install dependencies. Then, run rake test to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.

Bug reports and pull requests are welcome on GitHub at https://github.com/soutaro/ensure_xcode_has_no_ci_sources.

The gem is available as open source under the terms of the MIT License.