test_name.rake

namespace :test do
  task :populate_testopts do
    if ENV['TESTNAME'].present?
      ENV['TESTOPTS']  = ENV['TESTOPTS'] ? "#{ENV['TESTOPTS']} " : ''
      ENV['TESTOPTS'] += "--name=#{ENV['TESTNAME'].inspect}"
    end    
  end
end

%w(test:units test:functionals test:integration).each do |task_name|
  Rake::Task[task_name].prerequisites << 'test:populate_testopts'
end