The Openstack project is a good example of a complex project with complicated testing. Merges are gated on successful test runs of a handful of different tests

The Openstack project is a good example of a complex project with complicated testing. Merges are gated on successful test runs of a handful of different tests (unit, integration, etc) An example of complicated mocking can be seen here: https://github.com/openstack/nova/blob/master/nova/tests/virt/xenapi/test_vmops.py https://github.com/openstack/nova/blob/master/nova/tests/vir... In particular, SpawnTestCase. Disclaimer: While I didn't write this example, I am responsible for some of the other mess