[xtalax]

The second you "think" a piece of software/a feature works, you should be verifying that this is the case automatically. It's often just as easy to write an automated test as test manually, just do it and that test will be there forever saving you from your own idiocy. You don't need to write the tests before you know how the feature is going to shake down to its implementation, but you'd sure do better to test before pushing to prod. You save yourself so much hassle in the long run with automated CI.