If there are traces of any automated QA measures set up in the past, try reusing them as much as possible.
There can be real value in all the stuff past developers set up, and it would be a shame to throw it all out.If you are restoring an old engine, on the first try, you’ll start it without any load to see if it works without burning. This is called a smoke test—all is well, as long as we see no smoke. The same goes with legacy code: when you have nothing with which to test the application thoroughly, you can at least build it and see if the application starts up correctly.
Build the code with your trivial changes, and deploy it to all the environments up to the production. Your goal is to make an example for this restored process—getting code changes from your head to the customers’ machines. It’s challenging enough on its own; that’s why we kept the scope of our changes to a minimum. Your goal is to give yourself and the stakeholders confidence in the process.Most likely, you will have to build integration tests from scratch.
, that can format entire projects in a moment and leave only a few options to discuss inside your team. So you can outsource both the formatting itself and the endless discussions about it to an external tool!Now, let’s do some final warm-up tasks. You can try to update some dependency from one patch version to a newer one—for example, from version 1.2.3 to 1.2.4. Your code is probably using ancient versions of every third-party library it uses.
Even a patch upgrade is a non-trivial change, and with all the work we have done here, we should expect one of two results:everything works fine—both in testing and then on the production after deployment. Make sure you don’t try to rush those updates! Do one at the time, release, and wait for feedback. Remember, you are teaching people to trust your changes, and the last thing you need is some regression.So far, your work has been almost invisible to the users—unless you managed to break the production at some point. With all the infrastructure in place, you are ready to deliver some value! Pick the smallest and simplest issue you can find—a typo on some page or a missing margin on a button.
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