Explore unit testing and how it can ensure that what you're releasing is solid. Read through and see an actual Python example and how we think about approaching feature testing.

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Unit tests are just little pieces of code that verify that things are functioning as they should. It’s not deterministic (that is, the function doesn’t always return the same output for a given input, and it contains a few side effects that reach outside of the scope of the function. How can we fix this?

How to build a simulator for any feature — Part 1: Unit testing