guard-mocha

bin-mocha.sh

#!/usr/bin/env sh

all_tests=$(find ./test -type f -name "*test.coffee")

./node_modules/mocha/bin/mocha test/_helper.js ${1:-$all_tests}

Gemfile

source 'http://rubygems.org'

gem 'guard'
gem 'guard-shell'

Guardfile

guard 'shell' do
  watch(%r{^(test/.*_test\.coffee)$})   { |m| system("./bin/mocha #{m[1]}") }
  watch(%r{^lib/(.+)([^/]+)\.coffee$})  { |m| system("./bin/mocha test/lib/#{m[1]}#{m[2]}_test.coffee") }
end

test-lib_helper.js

process.env.NODE_ENV = 'test';

require('coffee-script');

I really love my guard & guard-minitest integration. Couldn't live without them, so here is my mocha port. Brownie points for what ./bin/mocha defaults to.