Port tests to mocha

[SebastienElet]

Hello,

I propose to port the test suite to mocha.
With mocha, we could have a better debugging and code coverage.

Here is a little POC :

'use strict';

var assert = require('assert')
  , Parser = require('../lib/Parser').Parser
  , CR = '\r'
  , LF = '\n'
  , CRLF = CR + LF
;

var ss = new require('stream').Readable()
  , p
  , result = []
;
ss._read = function() {};

p = new Parser(ss);
p.on('untagged', function(info) {
  result.push(info);
});


describe('Parser', function() {
  it('QuotaRoot', function() {
    ['* QUOTAROOT INBOX ""', CRLF]
    .forEach(function(chunk) {
      ss.push(chunk);
    });
    assert.deepEqual(
      result
      , [
        {
          type: 'quotaroot'
          , num: undefined
          , textCode: undefined
          , text: {
            roots: ['']
            , mailbox: 'INBOX'
          }
        }
      ]
    );
  });
});

What do you think about this idea ?
Is there any code convention to respect ?

[mscdex]

I generally opt to do custom testing because it's less dependencies and it's easy/simple enough to do manually. Also I don't already use mocha or other testing frameworks in other projects so there is a barrier there as well.