metric_fu / rcov - class content listed twice in report, coverage lower on linux than mac

[Tim Harding]

I've got a cc.rb build set up running metric_fu w/

rake db:test:purge db:migrate test metrics:check:thresholds

metrics:check:thresholds depends on metrics:all - metrics:all provides the same percent coverage.

on my Mac OS X 10.5 I get 70.8% coverage

tim@thefactory:~$ uname -a

Darwin thefactory.lan 9.8.0 Darwin Kernel Version 9.8.0: Wed Jul 15 16:55:01 PDT 2009; root:xnu-1228.15.4~1/RELEASE_I386 i386

tim@thefactory:~$ ruby --version

ruby 1.8.6 (2008-08-11 patchlevel 287) [i686-darwin9.6.2]

tim@thefactory:~$ gem list | grep metric_fu

jscruggs-metric_fu (1.1.5)

tim@thefactory:~$ gem list | grep rcov

relevance-rcov (0.9.2.1, 0.9.0, 0.8.6)

on linux I get 67.8% coverage

cruise@ci:~/.cruise/projects/theorytest/work$ uname -a

Linux ci 2.6.18.8-linode19 #1 SMP Mon Aug 17 22:19:18 UTC 2009 i686 GNU/Linux

cruise@ci:~/.cruise/projects/theorytest/work$ ruby --version

ruby 1.8.6 (2007-09-24 patchlevel 111) [i486-linux]

cruise@ci:~/.cruise/projects/theorytest/work$ gem list | grep metric_fu

jscruggs-metric_fu (1.1.5)

cruise@ci:~/.cruise/projects/theorytest/work$ gem list | grep rcov

relevance-rcov (0.9.2.1, 0.9.0)

It seems like on the rcov reports from the linux ci box some classes have a lower coverage score and their file content listed twice back to back.

In these cases the second set of code in that file is all listed as uncovered. The first half of the listing is marked as covered the same as on the mac.

See here for example:

http://skitch.com/timharding/nn3qq/metrics

Help. What am I doing wrong? 

Thanks,

-Tim
--
Tim Harding

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