a more descriptive/user-friendly error when describe title is not provided

[dasilvacontin]

describe(function () {
    before(function () {
        this.credentials = {id: 123};
    })

    it('should work', function () {
        expect(this.credentials.id).to.equal(123);
    })
})

/usr/local/lib/node_modules/mocha/lib/interfaces/bdd.js:49
      fn.call(suite);
         ^
TypeError: Cannot call method 'call' of undefined
    at context.describe.context.context (/usr/local/lib/node_modules/mocha/lib/interfaces/bdd.js:49:10)
    at Object.<anonymous> (/Users/dasilvacontin/temp/test/kek.js:1:63)
    at Module._compile (module.js:456:26)
    at Object.Module._extensions..js (module.js:474:10)
    at Module.load (module.js:356:32)
    at Function.Module._load (module.js:312:12)
    at Module.require (module.js:364:17)
    at require (module.js:380:17)
    at /usr/local/lib/node_modules/mocha/lib/mocha.js:187:27
    at Array.forEach (native)
    at Mocha.loadFiles (/usr/local/lib/node_modules/mocha/lib/mocha.js:184:14)
    at Mocha.run (/usr/local/lib/node_modules/mocha/lib/mocha.js:405:31)
    at Object.<anonymous> (/usr/local/lib/node_modules/mocha/bin/_mocha:405:16)
    at Module._compile (module.js:456:26)
    at Object.Module._extensions..js (module.js:474:10)
    at Module.load (module.js:356:32)
    at Function.Module._load (module.js:312:12)
    at Function.Module.runMain (module.js:497:10)
    at startup (node.js:119:16)
    at node.js:906:3

[dasilvacontin]

And if the it title is not set... well, it thinks that it's a pending test and the title is the function:

  setting vars inside before
    - function () {
        expect(this.credentials.id).to.equal(123);
    }


  0 passing (5ms)
  1 pending

[1999]

@boneskull probably it's time to close this issue now?

[dasilvacontin]

@1999 thanks for pointing it out! Closing.