mirakuru.exceptions.AlreadyRunning - When using xdist postgresql_proc_fixture's get_port may return the same port number

[dale-vendia]

What action do you want to perform

Use this fixture with pytest xdist

What are the results

Around 50% of the time, tests would throw an error with mirakuru.exceptions.AlreadyRunning

What are the expected results

Ideal: Should use a port number / range based on the xdist worker id
Alternative solution: create a port range postgresql_my_proc = factories.postgresql_proc(port=random.randint(10000, 50000)) -- it is possible with this method that ports still conflict.

I am currently working through on how I would implement the ideal solution, currently working with the alternative approach

Why is this happening?

When concurrently executing session fixtures postgresql_proc_fixture's get_port may return the same port number. When the same port number is used the tests will (correctly) fail with a mirakuru.exceptions.AlreadyRunning.

[fizyk]

@dale-vendia I think that's a good idea :)