Test-Commit-Revert: A useful workflow for testing legacy code in Ruby

When you inherit a legacy app with no tests, your first step should be to add them. But that can be a huge task! How do you even start? In this article, José will introduce us to a testing workflow called test-commit-revert (TCR) that is particularly useful for adding tests to legacy systems. Read to see practical examples and how to set up your tooling for minimal friction.