testing my Ruby gem: undefined method `configure' for Shoulda::Matchers:Module (NoMethodError) -


i'm working on first ruby gem , have bundled cucumber, rspec , shoulda-matches testing. when run rspec, following error: 

/app/my_gem/spec/spec_helper.rb:6:in `<top (required)>': undefined method `configure' shoulda::matchers:module (nomethoderror)

here gemspec:

# my_gem.gemspec ... gem::specification.new |spec|   ...   ...   spec.add_development_dependency "activemodel"   spec.add_development_dependency "bundler", "~> 1.8"   spec.add_development_dependency "cucumber"   spec.add_development_dependency "rake", "~> 10.0"   spec.add_development_dependency "rspec"    spec.add_development_dependency "shoulda-matchers" end

my spec_helper.rb:

require 'my_gem' require 'pry' require 'shoulda/matchers'  shoulda::matchers.configure |config|   config.integrate |with|     with.test_framework :rspec      # with.library :active_record     with.library :active_model     # with.library :action_controller     # or, choose of above:     # with.library :rails   end end

it's finding shoulda::matchers not .configure method reason. requiring shoulda wrong somehow? not sure if related, rspec giving me warning:

warn: unresolved specs during gem::specification.reset:   json (>= 1.7.7, ~> 1.7)   minitest (~> 5.1) warn: clearing out unresolved specs. please report bug if causes problems.

thanks pointers!

it looks trying use documentation 3.0.0.alpha version of shoulda-matchers supports 3.0.0.alpha, using older version. either see correct documentation version using (i'm guessing 2.8.x) or update gemfile use 3.0.0.alpha:

gem 'shoulda-matchers', github: 'thoughtbot/shoulda-matchers'

then run bundle install , shoulda::matchers.configure should start working.


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