test-queue makes your tests run fast

See: https://github.com/tmm1/test-queue

Transcript

1. test-queue
   

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2. makes your
   TESTS
   

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3. RUN
   FAST
   

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4. tmm1/test-queue
   

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5. HOW?
   

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6. DISTRIBUTE THE LOAD
   

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7. WITH CORES
   USE THEM IF YOU
   HAVE THEM
   

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8. BRING YOUR OWN
   

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9. USE SOMEONE ELSE'S
   

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10. THERE ARE SO MANY
    CLOUDS OUT THERE
    

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11. WHICH CLOUD?
    

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12. PICK ONE
    I AM NOT HERE TO SELL YOU
    ANYTHING
    

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13. BUT NO, REALLY, HOW?
    

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14. 1. TAKE A SOCKET
    

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15. 2. FORK SOME
    WORKERS
    

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16. 3. SMARTLY
    DISTRIBUTE TESTS
    

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17. 4. SPEND LESS TIME
    WAITING ON CI
    

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18. 5. SPEND MORE TIME
    SHIPPING CODE
    

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19. GETTING STARTED
    

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20. INSTALL
    # Gemfile
    group :test do
    gem "test-queue"
    end
    

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21. ANATOMY OF A SCRIPT/TEST-QUEUE
    #!/usr/bin/env ruby
    $LOAD_PATH.unshift File.expand_path("./../../rspec", __FILE__)
    unless ENV["TEST_QUEUE_WORKERS"]
    abort "TEST_QUEUE_WORKERS must be set in env!"
    end
    require "test_helper"
    require "test_queue"
    require "test_queue/runner/rspec"
    class CustomTestRunner < TestQueue::Runner::RSpec
    end
    CustomTestRunner.new.execute
    

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22. SETTING UP YOUR AFTER_FORK
    class RailsRSpecRunner < TestQueue::Runner::RSpec
    def after_fork(num)
    # ActiveRecord
    ActiveRecord::Base.configurations["test"]["database"] << num.to_s
    ActiveRecord::Base.establish_connection(:test)
    # Redis
    $redis.client.db = num
    $redis.client.reconnect
    end
    end
    

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23. SETTING UP YOUR PREPARE
    class RailsRSpecRunner < TestQueue::Runner::RSpec
    def prepare(num)
    # grab a copy of your database schema
    num.times do |i|
    # load it into a clean copy of your test database
    end
    end
    end
    

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24. DEMO
    

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25. ADVANCED USAGE
    AT A HIGH LEVEL
    

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26. REMOTE WORKERS
    

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27. AN EXAMPLE
    # shared secret
    export TEST_QUEUE_RELAY_TOKEN=12345
    # tell us what you're doing
    export TEST_QUEUE_VERBOSE=1
    # create a master test-queue instance
    TEST_QUEUE_SOCKET=1.2.3.4:12345 bundle exec rspec-queue
    # on a server, far, far away...
    # create a worker that sends results back to the master
    TEST_QUEUE_RELAY=1.2.3.4:12345 bundle exec rspec-queue
    

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28. COMBINE WITH YOUR
    CI SYSTEM
    

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29. RUN YOUR TESTS
    FASTER
    

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30. THANKS
    I AM @WFARR
    

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31. GITHUB.COM/WFARR/SIX_MINUTE_BLOG
    !⚡
    GITHUB.COM/TMM1/TEST-QUEUE
    

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