Running rails core tests

Question

I'd like to make a contribution to the rails project, but am stumbling at the first hurdle... I've cloned the rails repository and am getting an error when trying to run the unit tests.

$ bundle exec rake test
...
/home/me/.rvm/rubies/ruby-1.9.3-preview1/lib/ruby/1.9.1/minitest/spec.rb:131:in `register_spec_type': wrong number of arguments (1 for 2) (ArgumentError)

I'm using:

• rvm with ruby ruby-1.9.3-preview1 (1.9.2 told me there was an incompatibility with rails 4)
• rake-0.9.2.2
• latest github commit tried: 211174a
• (ubuntu)

Just to double check:

$ ruby -v
ruby 1.9.3dev (2011-07-31 revision 32789) [i686-linux]

I've read and did not find any info in http://edgeguides.rubyonrails.org/contributing_to_ruby_on_rails.html

Have also completely reinstalled rvm, recompiled ruby, and replaced all gems multiple times.

Answer 1

The master branch of Rails is now the beta version for 4.0.0 and removes support for Ruby 1.8.7. I don't know exactly why it doesn't work with Ruby 1.9.3 preview, but I would recommend always running with the latest stable version of Ruby. Another option is to try running the tests in Ruby 1.9.2 and see if you get any errors.