Testing Legacy Code: Safe Refactoring

The paradox: I cannot test this code because it is legacy. I need to refractor the code to make it testable. How can I manage that, without breaking existing functionality? I will need to write some tests, but… argh! This presentation explains how to safely refactor and test ‘untestable’ code – without breaking any existing functionality.

Video producer: https://www.phpconference.co.uk/