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Standup 8/30/2011 Cruisin' for trouble


*Why is Cruise Control green when my tests are failing?

Probably because the rake task running the tests returns zero. Cruise Control relies on the exit code of the processes it runs to determine whether to report success or failure. This seems like a common Cruise Control pitfall. It's good practice to run a failing test through Cruise Control during initial set up in order to avoid this problem

Standup 5/27/2011 Hack For Change, Guiderails goes public, Jenkins & Jasmine jems


*Is there a way to change the URL that CCRB pulls from when it builds?

"Use Jenkins" (we will be standardizing on Jenkins in the near future anyway)

Apparently the answer has been found successfully in the past by grepping through the Ruby portion of the CCRB source.


  • Hack For Change, sponsored by is inviting engineers and designers to spend 24 hours to build a web or mobile app that can help advance positive change. Top-rated hacks will be awarded a total of $10,000 to ensure their continued success and will gain recognition through widespread media coverage and promotion.

  • Guiderails: Pivotal's Rails 3 Templates, has been made publicly available on GitHub.

  • While there is not consensus on how hash tags in URLs that are being redirected should be handled, Safari stands apart from most other modern browsers by throwing them away entirely.

  • When configuring a new project for Jenkins, remember to specify the branch to build, otherwise Jenkins will try to pull and build all branches from the repo.

  • Jasmine has a bug in its "runs and waits for" construct that causes it to ignore changes to the defaults for the timer and message on the "waits for" block.

Standup 12/17/2010 Comparing indexed date columns, git subtrees, Headless Selenium for CI


Is there a way to get MySql indexing to speed up queries involving greater and less than operators on date columns?

Postgres handles these operators a little bit better than MySql, but may not actually solve this problem.

Using millis instead of dates would give the DB the best chance of handling this scenario.

We are using Git's subtree merge facility instead of submodules to stay synced to a different repository for part of our project. How do we push changes back to that repo?

See Tim Connor's blog post "Git sub-tree merging back to the subtree for pushing to an upstream". Early in that post is a pointer to an article describing the the subtree merge operation. Tim goes on to explain how to push your changes back through the chain.


  • Some cloud environments leave the names of temp files visible even when their contents are not accessible. Be sure to use obfuscated names for your temporary files!

  • The "Headless" gem allows you to easily set up an alternate "display" that allows programs to execute in a headless environment. See this blog post about how to use Headless to run Selenium tests on a CI box:

  • Ccrb will bog down to painfully slow levels if more than a couple of CC Tray clients are pinging it repeatedly during a build.

  • Cron will not honor your .rvmrc file unless you do some work to set up the environment. If you set up your cron job like this:

0 6 * * * /bin/bash -l -c 'echo /home/someuser/.rvm/bin/rvm rvmrc trust ... && cd ... 

the -l & -c parameters cause bash to load your environment as if your were logging in before running the specified commands. Someone also mentioned that rvm-shell can be used as a solution to this problem.