Add daily email for 2024-03-02

Are your tests good enough?

source/_daily_emails/2024-03-02.md

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+---
+title: Are your tests good enough?
+date: 2024-03-02
+permalink: archive/2024/03/02/are-your-tests-good-enough
+tags:
+    - software-development
+    - automated-testing
+    - test-driven-drupal
+cta: testing_course
+snippet: |
+    You're about to refactor or add to some existing application code. How confident are you it will work afterwards?
+---
+
+You've been asked to add a new feature to or refactor some existing code.
+
+Assuming you have automated tests already (if not, why not?), before you change the code, you should ask whether they're good enough.
+
+They need to be passing, but do you feel confident the existing functionality will still work after you make your changes?
+
+Do you have all the existing use cases covered?
+
+If so, carry on.
+
+If not, spend some time improving your tests first to get that confidence before making any changes.