Hi All :

I just want share my testing with Ruby coverage code or Rcov. It is fun (for me, dont know for others) playing with Rcov report, i think it is like bugs tracking but i dont know other people called it or maybe it is like tool to coverage test your application codes.

First think you have to do is installing the gem :

gem install rcov

and then write simple code to run it as rake then save it in your_app/lib/tasks :

require 'rcov/rcovtask'

namespace :test do
namespace :coverage do

desc "Delete aggregate coverage data."

task(:clean) { rm_f "coverage.data" }
end

desc 'Aggregate code coverage for unit, functional and integration tests'

task :coverage => "test:coverage:clean"

%w[unit functional integration].each do |target|

namespace :coverage do

Rcov::RcovTask.new(target) do |t|

t.libs << "test"
t.test_files = FileList["test/#{target}/*_test.rb"]
t.output_dir = File.dirname(__FILE__)+"/report_rcov/#{target}"
t.verbose = true
t.rcov_opts << '--rails --aggregate coverage.data'

end
end

task :coverage => "test:coverage:#{target}"

end

system(" \"C:/Program Files/Mozilla Firefox/firefox.exe\" " +
"file:///"+File.dirname(__FILE__)+"/report_rcov/unit/index.html")

end


Absolutly i am using windows if you are using another OS not windows you could change the 4th line from bottom to :

system(open File.dirname(__FILE__)+"/report_rcov/unit/index.html")

Open your shell or CMD then execute rake test:coverage or open rake -T

rake test:coverage # Aggregate code coverage for unit,...
rake test:coverage:clean # Delete aggregate coverage data.
rake test:coverage:clobber_functional # Remove rcov products for functional
rake test:coverage:clobber_integration # Remove rcov products for integration
rake test:coverage:clobber_unit # Remove rcov products for unit
rake test:coverage:functional # Analyze code coverage with tests ...
rake test:coverage:integration # Analyze code coverage with tests ...
rake test:coverage:unit # Analyze code coverage with tests ...

Here I attached sample report from rcov. I hope this written can be useful for you gentleman and ladies.