Are there any examples of running local unit tests to verify

Question

Are there any examples of running local unit tests to verify your tasks are working I d like to have some pre deployment checks in my GitHub actions

Anna Geller · Answer

So far we have about unit testing flows and tasks this about CI CD in Prefect with several examples from other users

Ben Welsh · Answer

Thank you I ve got my first flow reading in to my test with `extract flow from file` but I m struggling to figure out how I might override a default parameter before calling it with ` run ` Is there a way to do that

Anna Geller · Answer

for sure but can you explain what exactly do you mean Parameter defaults can be provided in their definition and when triggering a flow run you can overwrite them e g the `create flow run` task or mutation allow you to pass your custom parameter values

Ben Welsh · Answer

Ah create flow run must be what I need I ll try it Thank you

Ben Welsh · Answer

Here is the overly simplistic idea I m trying that is failing Clearly I m missing something obvious about how to approach this

Ben Welsh · Answer

``` flow = extract flow from file flow py assert len flow tasks == 4 flow validate create flow run flow id=flow id flow name=flow name parameters= scrapers ia ```

Ben Welsh · Answer

For me I think the helpful example would be a simple doc that shows Here s how you import your hello world py flow and run it inside a test

Ben Welsh · Answer

I think I found it <https github com PrefectHQ prefect blob master tests test hello world py>

Anna Geller · Answer

yup you can import your flow object within your tests Nice that you found it