#413 Fast Tests pro

yeah .the speed of test is very important for TDD.. personally i find Spork + sublime Text2 Rspec bundle is really helpful and significantly fast!

As of MiniTest 4.2.0 you can run tests in parallel with parallelize_me.

Ryan, FactoryGirl.build implictly creates records in database when it has associations. Maybe it's better to use just Model.new for things like validations instead of build()?

Would have liked to see this cast for Test::Unit too... ;-)

Great railscast!

Only one problem with zeus and guard:
When we are using it, randomized with seed is always 0. Any solutions/suggestions? Is not a very big deal nonetheless.

Awesome railscast!

I've been dealing with this problem a lot lately while building a multi-tenancy app. Corey Haines' view on TDD is very interesting, and I encourage anyone interested to check out his brand new screencast episodes on Clean Coders.

If you have problems with url helpers while running zeus, I could be wrong but believe it's because of this here.

I applaud that effort to optimize time, but like spork, I've kicked zeus to the curb. They make the test environment just a little too dissimilar from the production and development environments. I wind up spending a lot of time tracking down bugs in my code... or my tests... only to learn it's neither; it's my testing environment flaking out. So how much time is it really saving? (BIG fan of guard, though.)

YMMV

I have this test which is taking 5 seconds to run:

  describe "GET /event/id" do
    it "allows flagging an event", js: true do
      create(:recording, event: user_event)
      visit event_path(user_event)
      page.should_not have_content("Unflag")
      click_link "toggle_flag"
      page.should have_content("Unflag")
      user_event.reload.flagged.should be_true
    end
  end

How would I speed up a test like that? -- I'm using poltergeist with phantomjs and all js: true tests are painfully slow :(

Great railscast.

I had problems getting zeus and guard working nicely together until I found that I had to upgrade guard-rspec to 2.1.0 or greater

gem 'guard-rspec', "~> 2.1.0"

Is anybody else receiving this error?

To replicate you clone the repo for the episode, go into the after folder and run

bundle install
time bundle exec rake spec:models

I am using ruby 1.9.3-p385 and rbenv.

Episode translates single digit seconds into timecode with minutes
     Failure/Error: build(:episode, seconds: 60*8+3).timecode.should eq('8:03')
     NameError:
       uninitialized constant Episode::TimeDuration
     # ./app/models/episode.rb:8:in `duration'
     # ./app/models/episode.rb:5:in `timecode'
     # ./spec/models/episode_spec.rb:19:in `block (2 levels) in <top (required)>'

What a great episode! Thanks a lot for this, my test-suite is much faster now!

Wow my test suite went from 1min30sec to 58 sec just by using the GC trick! Thank you!

Great stuff.
What about the sqlite :memory: database ? I have been using this since months for my tests, just to speed up the database transactions without having to change the specs. Not sure how big the gain is in the current rails but it was a big improvement once.

hi does anybody knows or can point me to some examples if using the above with mongodb?

This gem https://github.com/evrone/factory_girl-seeds helps to minimize total spec run time by preloading records for factory_girl and then use them in spec.

Why running tests with rspec is faster than with rake? What's rake doing unnecessarily?

Try https://github.com/evrone/factory_girl-seeds to speed up your tests

Great Railcast,

Besides a couple of shortcomings, which i think can be fixed with time, it has taught us how to save on time while testing, hence making work a whole lot easier

Great work!

Really helped me a lot. Thanks.

Another great cast :)

This is really very nice post you shared, i like the post, thanks for sharing

waw this was really a new information that is on testing that also about selective testing, preload rail testing are all new ideas that you have come up with in testing.

thank you for giving me the necessary information

This is really good and working for me. Thank you very much.

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I've watched it twice !

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Excellent article, read in one breath! Thank you!

We haven't had any problems with speed tests, regardless of what software we use. But then again, it might be the fact that a lot has changed in the last 3 years... Nice info. Thank you.

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Well, I believe the speed test in this situation will be quite useful for TDD. Other than that, I like sublime + Spork Text2 Rspec bundle really awesome in terms of speed.

Thanks for the post..

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