Automation in Code Reviews

1. Automation in Code Review Alina Mihaila Sr Backend Engineer at GitLab
2. Automation in Code Review • What is code review? • What can be automate in code reviews? • Tools that assist with code review at GitLab • What is next? • Q&A
3. Code Review process at GitLab • Code changes are reviewed by minimum 2 engineers (reviewer + maintainer) • Code reviews for multiple categories (frontend, backend, database, UX, QA) • Code review for multiple domain expertise CI, Product Intelligence, Tooling ) • Example MR with multiple reviewers
4. What can be automate in code reviews? Source: monkeyuser.com Example MR vale
5. Automation examples in code review at GitLab • Code Quality Widget ◦ Uses codeclimate ◦ Example MR
6. Automation examples in code review at GitLab • Test coverage visualization ◦ Simplecov(Ruby) ◦ (Istanbul)JavaScript ◦ PHP Unit PHP ◦ gocover(Go lang) ◦ Coverage.py(Python) ◦ Example of MR
7. Automation examples in code review at GitLab • Danger (GitLab, Github, Bitbucket) ◦ Automates common code review task ◦ Runs in CI ◦ Codify code guidelines (using the danger files) ◦ Ruby and Javascript ◦ GitLab Danger gem(Roulette) ◦ Example MR1, MR2
8. More automation examples in code review • Automated database migration testing (Example MR) ◦ Uses postgres.ai thin-clone technology. ◦ Runs migration on GitLab.com dataset. ◦ Used before the migration code is merged and deployed. ◦ Analyze migrations and behaviour before deploying to production.
9. What is next? • Unreview ◦ GitLab recently announced Machine Learning based solution for automatically identifying appropriate expert code reviewer Here is an early mockup (and it may differ from our final UI)
10. Q&A Contact • alina.vancea@gmail.com • Linkedin
11. • How to carry out effective code reviews • The code review struggle is real. Here's what you need to know • What are the most effective features for code review tools? • How GitLab's 5 new code review features will make life easier • Faster Code Reviews • The road to smarter code reviewer recommendations • Code Review Guidelines • Code review docs Resources