Parallel tests

gistfile1.md

Parallel tests

• Gem parallel_tests
  • add to config/database.yml:

test:
  database: yourproject_test<%= ENV['TEST_ENV_NUMBER'] %>

• Parallel tests with Cucumber:
  • add to cucumber.yml: std_opts "--require features"
  • add to env.rb: Capybara.server_port = 8888 + ENV['TEST_ENV_NUMBER'].to_i
• Parallel tests with Rspec
  • add to test.rb: PORT = 8888 + ENV['TEST_ENV_NUMBER'].to_i
• Parallel test for email testing
  • Use gem https://github.com/p0deje/action_mailer_cache_delivery (Ruby 1.9)
  • https://github.com/levzhinsky/action_mailer_cache_delivery (Ruby 1.8.7)
  • Add to test.rb:

config.action_mailer.delivery_method = :cache
config.action_mailer.cache_settings = { :location => "#{Rails.root}/tmp/cache/action_mailer_cache_delivery#{ENV['TEST_ENV_NUMBER']}.cache" }

Rake task for parallel test

desc "Run tests in parallel mode."
task :parallel, [:cores] do |task, args|
  cores = [args[:cores]]
  Rake::Task["parallel:spec"].invoke(*cores)
  Rake::Task["parallel:features"].invoke(*cores)
end

Tests

bundle exec rake parallel:create
bundle exec rake parallel:prepare
# or
bundle exec rake parallel:create[1]
bundle exec rake parallel:prepare[1]

RSpec

bundle exec rake parallel:spec
# or
bundle exec rake parallel:spec[1]

Cucumber

bundle exec rake parallel:features
# or
bundle exec rake parallel:features[1]

All tests

bundle exec rake parallel
# or
bundle exec rake parallel[1]

Contributors

• Dmitriy Kiriyenko

http://iafonov.github.com/blog/parallel-tests.html