From: Mauricio Fernandez <mfp@...>
Date: 2006-06-01T17:56:12+09:00
Subject: Re: [ANN] rcov 0.5.0: code coverage + callsite info, RubyGems, Rant...

On Thu, Jun 01, 2006 at 08:10:47AM +0900, Mat Schaffer wrote:
> >Seconded! I love it. Thank you bery much. My candidate for the "I  
> >want a Pony awards is" Some king of mashup between rcov, rake and  
> >ZenTest. I'd like something so that running tests became something  
> >akin to making a build in a static language, rcov would tell  
> >autotest what tests it needed to re-run based on the profiling  
> >information and whine heavily when you have code that's called  
> >isn't under test.
> >
> >/me hopes the lazyweb will provide! (and wishes he had proper time  
> >himself)
> 
> Maybe this is what you mean (I don't know ZenTest), but how hot would  
> it be if someone made an eclipse plugin that did it as a continual  
> background task (like, did it per file every time you saved) and  
> popped up little "Attention" icons next to files and underlined the  
> parts of code that weren't getting hit by unit testing. *drools*

I don't know about eclipse, but I implemented this yesterday:

$ rake rcov RCOVOPTS="--save"
[...]

/me edits lib/rcov.rb

... some time later:

$ rake rcov RCOVOPTS="--text-coverage-diff --no-color"
(in /home/batsman/src/rcov/head)
rm -r coverage
/home/batsman/usr/bin/ruby -Ilib:ext/rcovrt "bin/rcov" --text-coverage-diff --no-color -o "coverage" "test/test_CodeCoverageAnalyzer.rb" "test/test_FileStatistics.rb" "test/test_CallSiteAnalyzer.rb"
Loaded suite bin/rcov
Started
.......................................
Finished in 1.163085 seconds.

39 tests, 415 assertions, 0 failures, 0 errors

================================================================================
!!!!! Uncovered code introduced in lib/rcov.rb

### lib/rcov.rb:207
   
     def precompute_coverage(comments_run_by_default = true)
       changed = false
       lastidx = lines.size - 1
       if (!is_code?(lastidx) || /^__END__$/ =~ @lines[-1]) && !@coverage[lastidx]
!!       # mark the last block of comments
!!       @coverage[lastidx] ||= :inferred
!!       (lastidx-1).downto(0) do |i|
!!         break if is_code?(i)
!!         @coverage[i] ||= :inferred
!!       end
!!     end
       (0...lines.size).each do |i|
         next if @coverage[i]
         line = @lines[i]

It's in my repository, and it will be in rcov 0.6.0.

-- 
Mauricio Fernandez  -   http://eigenclass.org   -  singular Ruby