the9gag | I write code without tests

Tests are overratted, prove me wrong. Nothing like essentially coding everything twice. For very little gain. Ie. Read function definition. Look over function and can see what suppose to come out. It's an awful pain when extending functionality when it's already adding it in 3 spots in the front end and 3 spots in the back end then you have to also add it to all 6 of the Tests. qr code test ,taylor hartman color code test , prodigy auto code test strips