Setting up paypal sandbox and testing with my website

I've been using my PayPal business account for years, processing orders from my website. I'm getting busy enough now that I want to enable and test some advanced features through my scripts.

For example, I want to place a fictitious order so that I can see that the redirects are working, and I can grab transaction information and log it. What I have been doing for the time being is placing an order on my website, processing it, and then refunding the order. This is really tedious and silly.

But I can't seem to find through the documentation a very simple way to do this. All I want to do is process a fictitious order so I can test the environment.

Is there an easy, well documented process for doing this?

Thank you!