Rakefile

require 'rake'
require 'bundler/gem_tasks'

# Approach to version testing credited to
#   https://github.com/makandra/cucumber_factory

namespace :versions do
  namespace :bundle do
    desc 'Bundle all spec apps'
    task :install do
      for_each_directory_of('./cucumber_version/**/Gemfile') do |directory|
        Bundler.with_clean_env do
          system("cd #{directory} && bundle install")
        end
      end
    end
  end

  desc 'Test all supported cucumber versions'
  task :test do
    for_each_directory_of('./cucumber_version/**/Gemfile') do |directory|
      Bundler.with_clean_env do
        clean_outputs(directory)
        system("cd #{directory} && bundle exec cucumber --color --format progress -g -r ../../features/ ../../features/")
        system("bundle exec rspec -r #{directory}/output_path.rb ")
      end
    end
  end
end

def clean_outputs(dir)
  ["#{dir}/features/characteristics/cucumber_step_characteristics.json",
   "#{dir}/features/characteristics/cucumber_step_characteristics.html"
  ].each do |file|
    File.delete(file) if File.exist?(file)
  end
end

def for_each_directory_of(path)
  Dir[path].sort.each do |rakefile|
    directory = File.dirname(rakefile)
    puts '', "\033[44m#{directory}\033[0m", ''
    yield(directory)
  end
end