can't find gem rspec-core (>= 0.a) (Gem::GemNotFoundException) when running on Jenkins

Question

I am trying to run ruby spec tests in a Jenkinsfile.
However I have run into problems when executing this code:

sh 'rspec spec/unit/test_spec.rb'

This is the error:

/home/user/.rvm/rubies/ruby-2.4.0/lib/ruby/site_ruby/2.4.0/rubygems.rb:271:in 'find_spec_for_exe': can't find gem rake (>= 0.a) (Gem::GemNotFoundException) from /home/user/.rvm/rubies/ruby-2.4.0/lib/ruby/site_ruby/2.4.0/rubygems.rb:299:in 'activate_bin_path' from /home/user/.rvm/gems/ruby-2.4.0@global/bin/rake:23:in '' from /home/user/.rvm/gems/ruby-2.4.0/bin/ruby_executable_hooks:15:in eval' from /home/user/.rvm/gems/ruby-2.4.0/bin/ruby_executable_hooks:15:in ''

I am running Jenkins on an EC2 instance. The gem rspec-core is definitely installed, as I do a bundle install before running the spec test. I have also run the exact same test as the one on the instance itself instead of Jenkins and it works. When I run gem which rspec on Jenkins, it gives me this error:

ERROR: Can't find ruby library file or shared library rspec

But when I run it on the instance, it returns
/home/user/.rvm/gems/ruby-2.4.0@global/gems/rspec-3.6.0/lib/rspec.rb

Both are using the global gemset. What could be the problem?

J. H J. H · Accepted Answer · 2017-08-20T10:37:00

I managed to run the spec test by using

sh 'bundle exec rake spec:unit'

It uses the rake file instead of running the individual test itself, which is much more cleaner and clear.

This is what the rakefile looks like:

namespace :spec do
    RSpec::Core::RakeTask.new(:unit) do |t|`
        t.pattern = 'spec/unit/**/*_spec.rb'
    end
end

task default: ['spec:unit']

Which runs all the unit tests.

can't find gem rspec-core (>= 0.a) (Gem::GemNotFoundException) when running on Jenkins

1 Answers