Testing out VR without your own VR equipment is a pain.
The glasses are not much of a problem, since you can first develop using the google cardboard SDK and test it with your phone.

It's the controllers that are a pain to test. Luckily vrtk made something that simulates the controllers, which can be controlled with the keyboard.

The controls are very uncomfortable, this is not their fault; you can't really emulate movement easily with a keyboard.