text: var assert = require('assert');
  var Traverse = require('traverse');
  
  exports['leaves test'] = function () {
      var acc = [];
      Traverse({
          a : [1,2,3],
          b : 4,
          c : [5,6],
          d : { e : [7,8], f : 9 }
      }).forEach(function (x) {
          if (this.isLeaf) acc.push(x);
      });
      
      assert.equal(
          acc.join(' '),
          '1 2 3 4 5 6 7 8 9',
          'Traversal in the right(?) order'
      );
  };
  
  