Hi! In prefect 1.0 I used

with prefect.context({"date": datetime.datetime(2011, 1, 1)}):

to set context variables and test my flows. Is there something similar in prefect 2.0 to set the

start_date

variable from the flow run context (

prefect.context.get_run_context()

)? Thank you!

Hi! Yes there is, we call it `prefect.runtime`; you can read up on it here: https://docs.prefect.io/latest/concepts/runtime-context/ And see the current list of supported values within the API reference; for

start_date

I think you'll want

prefect.runtime.flow_run.scheduled_start_time

(ref: https://docs.prefect.io/latest/api-ref/prefect/runtime/flow_run/)

Thank you @Chris White! I'm reading about it, I think the documentation is clear. However, I don't see how to set a fixed value for scheduled_start_time. My use case is the following: • I want to implement a flow whose execution depends on the current scheduled date. I get that value from

prefect.context.get_run_context().start_date

• For testing purposes, I want to run my flow but setting the start_date to, for example, 2011-01-01. In prefect 1.0 there was a context that allowed to set the context variables to specific values just for testing purposes. Sorry if I missed it from the documentation, but I don't see it! Thank you again!

Oh I see - we don't currently expose a way to mock values for

runtime

but I think it's a good enhancement request - would you mind opening an issue for it?

That's awesome! Thank you vey much 👏