Rakefile

require "bundler/gem_tasks"

require 'rspec/core'
require 'rspec/core/rake_task'

RSpec::Core::RakeTask.new(:spec) do |spec|
  spec.pattern = FileList['spec/**/*_spec.rb']
end

task :default => "spec:all"

namespace :spec do
  %w(active_record_42 active_record_41 active_record_40 active_record_32 mongoid_4 mongoid_3).each do |gemfile|
    desc "Run Tests against #{gemfile}"
    task gemfile do
      sh "BUNDLE_GEMFILE='gemfiles/#{gemfile}.gemfile' bundle --quiet"
      sh "BUNDLE_GEMFILE='gemfiles/#{gemfile}.gemfile' bundle exec rspec"
    end
  end

  desc "Run Tests against active_record versions"
  task :all do
    %w(active_record_42 active_record_41 active_record_40 active_record_32 mongoid_4 mongoid_3).each do |gemfile|
      sh "BUNDLE_GEMFILE='gemfiles/#{gemfile}.gemfile' bundle --quiet"
      sh "BUNDLE_GEMFILE='gemfiles/#{gemfile}.gemfile' bundle exec rspec"
    end
  end
end