"Zero - One - Many." How to Apply Universal Tests

I will talk about a silver bullet that can be applied in most applications. The workshop will cover which classes need to be checked in applications: "Zero - not zero" and "One - many".

However, the question is how to apply these classes in different situations, especially if it's not about numerical fields.

In the workshop, I will describe how to find numbers and use these classes in practice in different scenarios. Also, I will share my experience of finding bugs and pointing out problem areas.