Capybara conflict?

[SanderMander]

Can't run any tests with error:
/home/vagrant/.rvm/rubies/ruby-2.1.2/lib/ruby/gems/2.1.0/gems/capybara-2.4.1/lib/capybara/rails.rb:15:in <top (required)>': undefined methodjoin' for nil:NilClass (NoMethodError)

ruby 2.1.2 rails 4.1

[cgunther]

I can confirm I'm seeing this as well, Ruby 1.9.3-p551, Rails 3.1.12, RSpec 2.14, Capybara 2.4.4.

A quick workaround I found was to change your Gemfile to not require rspec-rails-caching:

Change:

gem 'rspec-rails-caching'

To:

gem 'rspec-rails-caching', require: false

Then in your spec_helper.rb file, require this gem after capybara:

Change:

require 'capybara/rails'

To:

require 'capybara/rails'
require 'rspec-rails-caching'

I'll try to dig a bit deeper and see if I can find a proper fix.