A simple CI rake task for running instant and daily builds with Rspec and Cucumber

ci.rake

if [ :development, :test, :cucumber ].include?( Rails.env.to_sym )
  # the 'require' calls are here on a purpose. On staging the rspec and cucumber gems are not
  # present and since rake reads up the content of the .rake files, it will fail, because it
  # will try to load things, which are not there
  require 'rspec/core/rake_task'
  require 'cucumber/rake/task'

  namespace :ci do
    namespace :build do

      desc "Internal task for rspec execution, hence DO NOT CALL IT BY HAND!"
      RSpec::Core::RakeTask.new(:rspec_internal) do |t|
        t.rspec_opts = ["--format JUnit", '-o log/TEST-spec.xml']
      end

      # cucumber::rake::task does not like desc, it should be provided as a constructor argument
      Cucumber::Rake::Task.new(:cucumber_internal, "Internal task for cucumber execution, hence DO NOT CALL IT BY HAND!") do |t|
        t.cucumber_opts = "--profile cruisecontrol"
      end

      desc "Executes the rspec and cucumber tests on the latest version"
      task :commit => :clean do
        Rake::Task['db:migrate'].invoke
        Rake::Task['db:test:load'].invoke
        Rake::Task['db:test:purge'].invoke
        Rake::Task['ci:build:rspec_internal'].invoke
        Rake::Task['ci:build:cucumber_internal'].invoke
      end

      desc "Executes the test cases several times, generates coverage and metrics data and checks that the test data up/down is working"
      task :daily => :clean do
        Rake::Task['db:migrate'].invoke
        Rake::Task['db:test:load'].invoke
        Rake::Task['db:test:purge'].invoke

        # make sure that we don't have a test cases which fails occasionally
        4.times do
          Rake::Task['ci:build:rspec_internal'].invoke
          # without this, rake won't allow multiple calls on the task (http://codequietly.com/blog/2010/06/rake-tasks-101)
          Rake::Task['ci:build:rspec_internal'].reenable
          Rake::Task['ci:build:cucumber_internal'].invoke
          Rake::Task['ci:build:cucumber_internal'].reenable
        end
      end

      desc "deletes files from the log folder"
      task :clean do
        FileUtils.rm_rf(Dir.glob("log/*.sha1"))
        FileUtils.rm_rf(Dir.glob("log/test.log"))
        FileUtils.rm_rf(Dir.glob("log/*.html.log"))
        FileUtils.rm_rf(Dir.glob("log/coverage*"))
        FileUtils.rm_rf(Dir.glob("log/TEST-*.xml"))
      end
    end

  end
end