compass.rake

namespace :compass do
  desc "Validate the sass files"
  task :check do
    require 'tmpdir'
    FileUtils.rm_rf "public/stylesheets/compiled"
    FileUtils.rm_rf "app/stylesheets/.sass-cache"
    err_filename = File.join(Dir.tmpdir, 'compass_err.txt')
    system "compass >/dev/null 2>#{err_filename}"
    if (File.exist?(err_filename))
      err = File.read(err_filename)
      if err.match(/WARNING|ERROR|Error/)
        puts err
        raise "Errors/Warnings in SASS files"
      else
        puts "no error or warning found"
      end
    end
  end
end
# adding compass:check as a prequisite to the test task
Rake::Task['test'].enhance do
  Rake::Task['compass:check'].invoke
end