ModuleNotFoundError: No module named 'function_app' while trying to unit test Python V2 Azure Functions

Clay Casper 166

I'm trying to unit test my python v2 azure function. Here's some of the only documentation (https://learn.microsoft.com/en-us/azure/azure-functions/functions-reference-python?tabs=asgi%2Capplication-level&pivots=python-mode-decorators#unit-testing) I could find. I think it's either outdated or there is not enough context. For instance, when it says to import the main function from function_app, I tried doing that but got an import error. Specifically, ModuleNotFoundError: No module named 'function_app'. I tried adding init.py but that still didn't work.

Clay Casper 166 Reputation points

2023-10-30T13:27:33.56+00:00

After reading this, it seems that I may have needed an init py file in my tests folder because now it seems to be running the tests properly. This is what I meant by lack of context. Please confirm that the init file is required and maybe update the docs to include this detail and any other missing details.
Clay Casper 166 Reputation points

2023-10-30T14:05:41.3866667+00:00

One other thing that is kind of related is that pytest isn't reading environment variables from the local.settings.json file, but trying to use OS level environment variables. So in my code I need to get an environment variable from the local.settings.json using os.getenv('myvariable') and it works fine until I run the function with pytest. This may be another thing to put in the docs. This is one solution I found.
Mike Urnun 9,811 Reputation points Microsoft Employee

2023-11-01T20:07:43.7166667+00:00

@Clay Casper Thanks for making this post! I'll review and share my findings

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