Should provide fake seed for test environment

**Motivation:**
```js
describe('Event', () => {
let type;

before(done => {
withEventType(type, done);
});

it('should create an event', done => {
const event = Event.fakeWith({ type });
event.save((error, created) => {
expect(error).to.not.exist;
expect(created).to.exist;
expect(created.type).to.exist.and.be.eql.to(type);
done(error, saved);
});
});

after(done => clear());
});
```