a failing test for problem described in #146. No solution, yet.

[HenrikJoreteg]

To help state the problem in the form of test.

[kamilogorek]

I guess those tests won't work like we'd expect, because they'll give us false positive:

- this[coll] = new this._collections[coll](null, {parent: this});
+ this[coll] = new this._collections[coll](null, {parent: this, parse: true});

- this[child] = new this._children[child]({}, {parent: this});
+ this[child] = new this._children[child]({}, {parent: this, parse: true});

This change itself will fix the tests, but as we initialize those things as an empty, in the end nothing gets parsed.