RCov for RSpec 2 not detecting coverage correctly? (not Rails!)

Preface

I've just started getting into Ruby and try to not only learn the language but also some development strategies. As kind of a beginner I'm concentrating on Test and Behaviour Driven Development. (yes, I'm doing both for comparison purposes)

With my small software project I'm using

• UnitTest (TDD)


• Cucumber (BDD)


• Rspec (TDD and BDD)

On various places I encountered RCov as a tool for telling me how much of my actual code I'm really testing.

I set up the following RakeTask in my Rakefile for the covarage analysis of the UnitTests:

desc "Run RCov to get coverage of UnitTests"
 Rcov::RcovTask.new(:rcov_units) do |t|
   t.pattern = 'tests/**/tc_*.rb'
   t.verbose = true
   t.rcov_opts << "--html"
   t.rcov_opts << "--text-summary"
   t.output_dir = "coverage/tests"
 end
 

This works fine and I'm getting a nice coloured HTML report in coverage/tests.

Problem Introduction

Similar I wrote the following RakeTasks for RCov to be used for coverage analysis of my specs:

desc "Run RCov to get coverage of Specs"
 Rcov::RcovTask.new(:rcov_spec) do |t|
   t.pattern = 'spec/**/*_spec.rb'
   t.verbose = true
   t.rcov_opts << "--html"
   t.rcov_opts << "--text-summary"
   t.output_dir = "coverage/spec"
 end
 

Problem Definition

However, the generated HTML report in coverage/spec looks somehow incomplete and almost failed.

None of the tested method bodies are marked as covered and thus red. However, I'm 100% sure they are executed within the specs. Only the lines def method_name(args) and class ClassName are marked 'green'. (as well lines with attr_reader :instance_variable)

Am I missing something?

---

$: ruby --version  
 ruby 1.8.7 (2011-02-18 patchlevel 334) [x86_64-linux]
 
 $: rspec --version  
 2.8.0
 
 $: rcov --version  
 rcov 0.9.11 2010-02-28
 
 $: rake --version  
 rake, version 0.9.2
 

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