def port_test_to_spec(fname, dir)
	spec = convert_test_to_spec(File.read(fname))

	spec_dir = "#{RAILS_ROOT}/spec/#{dir}"
	FileUtils.mkdir_p(spec_dir)

	spec_name = fname.match(/([^\/]+)_test\.rb/)[1]
	spec_fname = "#{spec_dir}/#{spec_name}_spec.rb"

	puts "Porting #{fname} to #{spec_fname}"
	File.open(spec_fname, "w") do |f|
		f.write spec
	end
end

def convert_test_to_spec(test)
	test.gsub!(/test_helper/, 'spec_helper')
	test.gsub!(/class ([A-Za-z0-9]+)Test < .+$/, 'describe \\1 do')
	test.gsub!(/def test_([a-z0-9_]+)/, 'it "tests \\1" do')
	test.gsub!(/def setup/, 'before(:each) do')
	test.gsub!(/def teardown/, 'after(:each) do')
	test
end

namespace :test do
	namespace :port do
		desc "Port your tests to rspec specs"
		task :spec do
			Dir["#{RAILS_ROOT}/test/unit/*_test.rb"].each do |fname|
				port_test_to_spec(fname, 'models')
			end
		end
	end
end