Photo by Nguyen Dang Hoang Nhu on Unsplash
Writing test classes used to intimidate me—until I realized they’re not about perfection, they’re about protection.
Now I see test methods as the gatekeepers that keep bugs out of production. For any class I write, I immediately create a test method that:
Inserts test data
Calls my method with known inputs
Asserts the expected output
I’ve started using @isTest(SeeAllData=false) exclusively, and I use Test.startTest() / Test.stopTest() to simulate realistic limits.
The goal isn’t just coverage—it’s confidence. When a test passes, I know my code won’t break what’s already working.
