asynctest enhances the standard python package unittest with features for asyncio. This talk aims at presenting asynctest and discuss various practices around unit testing of code using asyncio.

This talk aims at presenting asynctest, a library written on top of the standard unittest module. asynctest provides features for writing tests for libraries and programs using asyncio.

We will discover handy features like:

• how asynctest.TestCase reduces boilerplate and offers safeguards around subtle mistakes in an asynchronous code,
• how asynctest.Mock objects helps to mock coroutines, and how patch decorators are enhanced to handle coroutines,
• how one can control the event loop's clock.

I will also discuss the future of asynctest and planned features.