Imagine your’re working on a bigger feature in a complex piece of software. Your implementation is complete, all tests in scope turned green and you push your changes for integration testing. Then, some integration tests from a completely different module fail and you have no clue which change may have caused this. Now you start analyzing the issue. Probing your commits by hand would end up in a very tedious process for sure. Thankfully git can do all the work for you, while you enjoy a cup of coffee.
The high-level command
git bisect allows you to automatically run a specified test procedure, while it’s crawling through your commit history to find the bad revision.
I recently had to deal with two projects that have a common origin but separated at some point in time. I now had to try to bring them back together again - basically merging the changes. Sounds like a pretty standard
git merge or
git rebase job.
Unfortunately the separation was done in a not so clever way. Someone cloned the original repository, checked out some branch, made some first refactoring steps, got rid of the git stuff (probably
rm -rf .git) and started a new git repository with this status. Rumors are that the situation at that time was so tense that people wanted to make a clear cut - which they did in a technical way.
Quite some time later it was my task to try to get the projects together again. The only input I had was two git URLs and the above story.
Have you ever wondered what kind of patterns
.gitignore allows? Was it
*target*?? Read on and find out!
Just recently I gave a presentation on Git (the version control system, not the British pejorative). I introduced newbies to the Git world and the concepts behind it and demonstrated advanced users some lesser known Git features.
Additionally, I introduced my personal workflow when working on small scale features, let’s say the size of one commit to the main line. Some of my colleagues found this workflow to be particularly interesting, so I’d like to share it here and discuss its benefits and drawbacks.