code: function checking(desc, args, body, n, options) {
      if (typeof n === 'undefined') {
          n = 1000;
          options = {};
      }
      if (typeof options === 'undefined' && typeof n !== 'number') {
          options = n;
          n = 1000;
      }
      it(desc, function() {
          checkers.forAll(args, body).check(n, options);
      });
  }
docs: Generate a mocha example
  @param  {string}   desc    The example description
  @param  {array}    args    List of generators to pass to body
  @param  {function} body    Function to check, should return true or false
  @param  {number}   n       The number of iterations to check (optional)
  @param  {object}   options Additional options for check (optional)