The code of the application can be found in the api/main.py.
The code of the tests can be found in the api/tests.py.
When the test Tests.test_1 calls the / endpoint - everything is fine.
When the test Tests.test_2 calls the / endpoint - a RuntimeError is raised with the message Event loop is closed.
In case aiopg is not used - tests run fine.
Once you've built the container with a docker-compose build - just do docker-compose up any time you want to run the tests.