freezgun - to the rescue for tests relaying on time

Time related issues are tricky part in software engineering. So they require proper testing.

Few ideas how to tackle testing time related part of code:

• parametrize tested methods/functions with explicit time passed - sometimes a bit kind of test-only usage, because inside anyway datetime.now() is used
• mocking
• using specialized library like freezgun for efficent time mocks

Two major options to use freezgun in your tests:

• conext manager

• decorator

other cool things

• support for timezones
• support for manual ticking and auto ticking with delta

more: https://github.com/spulec/freezegun