Multiple compose files

[l3s2d]

I've looked around for examples but couldn't find any. I have a directory structure like this:

└── tests
    ├── test1
    │   ├── docker-compose.yml
    │   └── test_1.py
    └── test2
        ├── docker-compose.yml
        ├── test_2.py
        └── test_3.py

I'm looking for a way to call pytest from the project root (the directory above tests, and have pytest recursively run each test. Each test should be run against the compose file in the same directory as itself. Is there a way to specify with pytest.ini or conftest.py? Alternatively, is it possible to specify in the test_*.py which compose file to use?

[RmStorm]

First off: sorry for the very slow reply!

I have to think a little bit about this. At first glance my guess is that it would be quite difficult to implement. Currently there is a 'top level' fixture in this plugin called docker_project. This fixture manages the docker-compose project and verifies that there are not already containers running beforehand and stuff. This fixture is session scoped to allow spinning up the containers once for all the tests. To use multiple docker compose files this fixture has to be downgraded to at least the module level. This would mean that the containers also have to be spun up and down per module. To prevent this, the project fixture would have to come in multiple 'scope flavours'. This would allow some people to use a session scoped project fixture and run all the tests against a single set of running containers. People in your situation could instantiate a project fixture per module or class and scope the containers to the same scope.

While that sounds like a fairly straightforward change, the docker_project fixture gets its configuration from command line options. To implement this in a nice way there would have to be some way to configure it as a fixture from conftest instead or fixture parameters instead.

I think it's possible and it can be made to be fairly practical. I do however think it will be hard to add this in a backwards incompatible way. The current plugin design is just quite unfit for it.

If you make a fork and get something to work I would be happy to look at a PR!

[RmStorm]

Hi @l3s2d, in #54 @mathieu-lemay added the ability to use multiple docker compose files as described here. Does this fit your usecase? I think it's quite different from using a different compose file in every directory but maybe it helps and we can close this issue?

[Toilal]

@RmStorm Please check my PR, it's implemented and now far easier to use/configure the plugin.