In a database world, a long, long time ago, Sybase was king. Then, a version was released that was so bad, it came close to tanking the company. I'm pretty sure in hindsight they wished they did a bit more testing. (and, I sure quite a few of you remember when you needed to buy Sybase books to better understand the early releases of SQL Server).

So, yes, do please test. When I was chief software architect of a start-up years ago, we setup a continuous integration process. code check-ins could invoke a full rebuild, along with a fully automated set of unit tests and end-to-end tests. If you can get a continuous integration process setup, do it. A bit of a hassle at first, but it makes it easier to test.