> ultimately it's a image generation library, why this thing needs any tests So you can be confident that it generates correct images, even three years from no

> ultimately it's a image generation library, why this thing needs any tests So you can be confident that it generates correct images, even three years from now when you've mostly forgotten about it but you dip back in just to add a quick feature without thinking about it very much -- or, for that matter, when someone submits a pull request, and you want to make sure it doesn't break anything.