http://www.stevelongdo.com/articles/2006/04/27/rails-and-rcov en-us 40 There is an <a href="http://thread.gmane.org/gmane.comp.lang.ruby.rails.core/1073/focus=1073">interesting thread</a> going on the rails-core mailing list about testing coverage and documentation. I learned about <a href="http://eigenclass.org/hiki.rb?rcov">rcov</a> which provides testing coverage metrics for <a href="http://ruby-lang.org">Ruby</a> applications. <strike>Here are links to the results so far</strike>Took this content down due to it being stale: <ul> <li><strike>ActionMailer</strike><br />rcov&nbsp;-x&nbsp;activerecord,activesupport,actionpack&nbsp;test/*.rb</li> <li><strike>ActionPack(top level only)</strike><br />rcov&nbsp;-x&nbsp;activerecord,activesupport,actionmailer&nbsp;test/*.rb</li> <li><strike>ActionWebService</strike><br />rcov&nbsp;-x&nbsp;activerecord,activesupport,actionpack,actionmailer&nbsp;test/*.rb</li> </ul> I modified <a href="http://eigenclass.org/hiki.rb?rcov">rcov</a> a bit trying to get it to work covering the <a href="http://www.rubyonrails.org/">Rails codebase</a>. The results were somewhat mixed, but only railties blew up strictly in <a href="http://eigenclass.org/hiki.rb?rcov">rcov</a> with a SystemStackError. Showing the complete test coverage of ActiveRecord in particular will present a challenge due to the number of database connectors it has.<br /><br />As an example of differences between running rake test versus rcov test*.rb, in Activerecord there is a test case named aaa_create_tables_test that runs fine with rake, but with <a href="http://eigenclass.org/hiki.rb?rcov">rcov</a> there is a load error because aaa_create_tables_test requires abstract_unit.rb which simple test/*.rb has loaded yet because <b>aa</b>a_create_tables_test comes before <b>ab</b>stract_unit. I have gotten farther with loading abstract_unit.rb explicitly rcov -x actionpack,activesupport test/abstract_unit.rb test/*.rb but it would be better if I could figure out how to wrap rake inside of <a href="http://eigenclass.org/hiki.rb?rcov">rcov</a>... Thu, 27 Apr 2006 05:14:00 +0000 urn:uuid:18e23f3e-ab2b-438e-96ec-ce1cd9099dac Steve Longdo http://www.stevelongdo.com/articles/2006/04/27/rails-and-rcov rails ruby rcov testing coverage