Cross Project Gating
The following sections describe how to test future state of cross projects dependencies.
Python
Python project’s requirements are pulled from external source by default, and the zuul-jobs tox playbook implement a special task to ensure the job required projects are installed from the zuul src_root so that the gate effectively test in flight project’s state.
Packaging
Similarly, packaging project, where tests are performed using the final binary artifacts, would need to inject a local repository to ensure the test is using the change as prepared by Zuul.