Using "alembic_runner" fixture silences application logs.

[schireson]

Using "alembic_runner" fixture silences application logs.

[DanCardin]

My guess would be the default env.py content alembic gives you includes something like:

from logging.config import fileConfig
fileConfig(context.config.config_file_name)

which messes with preexisting loggers by default.

We have a note about it, although for different reasons, in the docs

[a1d4r]

Thank you, are absolutely right. That was a causer.

Providing disable_existing_loggers=False argument to fileConfig didn't solve the issue for me. So I used another dirty hack to skip the logger configuration in tests:

import sys
if config.config_file_name is not None and 'pytest' not in sys.modules:
    fileConfig(config.config_file_name)