Try passing True or False to the constructor to set past_due. Example here: https://github.com/Azure/azure-functions-python-library/blob/8ef845cd8f688c9aba5ed7b96f0951cba4856e12/azure/functions/timer.py#L35

Thanks, this worked. Can I suggest that this is added to the docs as an example alongside the others?

That wasn't working for me anymore, in the end I created a class with the past_due attribute set to True, and that did the trick (also on stack overflow):

    import unittest
    from azure.functions import TimerRequest
    from my_func import main

    class MockTimer():
        def __init__(self):
            self.past_due = True


    class TestFunction(unittest.TestCase):
        def test_my_function(self):
            timer = MockTimer()
            resp = main(timer)

Hi everyone, sorry for the delay on this. We're currently working on a fix that will allow for unit testing of TimerRequest without the additional workarounds. You'll be able to create a TimerRequest object like this: func.TimerRequest(). This change will be included in azure-functions>=1.25.0.

I've updated our wiki to show specifically the TimerRequest example. With azure-functions >= 1.21.0, you'll also be able to test the functions by invoking them directly (ie, by calling python function_app.py). The wiki covers the setup, and we're in the process of updating the developer reference as well to include this information.