gistfile1.rb

# From http://github.com/jaymcgavren
#
# Save this as rcov.rake in lib/tasks and use rcov:all =>
# to get accurate spec/feature coverage data

require 'cucumber/rake/task'
require 'spec/rake/spectask'

namespace :rcov do
  Cucumber::Rake::Task.new(:cucumber) do |t|    
    t.rcov = true
    t.rcov_opts = %w{--rails --exclude osx\/objc,gems\/,spec\/,features\/ --aggregate coverage.data}
    t.rcov_opts << %[-o "coverage"]
  end
  
  Spec::Rake::SpecTask.new(:rspec) do |t|
    t.spec_opts = ['--options', "\"#{RAILS_ROOT}/spec/spec.opts\""]
    t.spec_files = FileList['spec/**/*_spec.rb']
    t.rcov = true
    t.rcov_opts = lambda do
      IO.readlines("#{RAILS_ROOT}/spec/rcov.opts").map {|l| l.chomp.split " "}.flatten
    end
  end
  
  desc "Run both specs and features to generate aggregated coverage"
  task :all do |t|
    rm "coverage.data" if File.exist?("coverage.data")
    Rake::Task["rcov:cucumber"].invoke
    Rake::Task["rcov:rspec"].invoke
  end
end