➜  temp  cat test/test.js
it('rulz')
describe('very cofee')
it('sucks')

➜  temp  mocha
/usr/local/lib/node_modules/mocha/lib/interfaces/bdd.js:49
      fn.call(suite);
        ^
TypeError: Cannot read property 'call' of undefined
    at context.describe.context.context (/usr/local/lib/node_modules/mocha/lib/interfaces/bdd.js:49:9)
    at Object.<anonymous> (/Users/dasilvacontin/temp/test/test.js:2:1)
    at Module._compile (module.js:460:26)
    at Object.Module._extensions..js (module.js:478:10)
    at Module.load (module.js:355:32)
    at Function.Module._load (module.js:310:12)
    at Module.require (module.js:365:17)
    at require (module.js:384:17)
    at /usr/local/lib/node_modules/mocha/lib/mocha.js:192:27
    at Array.forEach (native)
    at Mocha.loadFiles (/usr/local/lib/node_modules/mocha/lib/mocha.js:189:14)
    at Mocha.run (/usr/local/lib/node_modules/mocha/lib/mocha.js:422:31)
    at Object.<anonymous> (/usr/local/lib/node_modules/mocha/bin/_mocha:398:16)
    at Module._compile (module.js:460:26)
    at Object.Module._extensions..js (module.js:478:10)
    at Module.load (module.js:355:32)
    at Function.Module._load (module.js:310:12)
    at Function.Module.runMain (module.js:501:10)
    at startup (node.js:129:16)
    at node.js:814:3