Is it possible to use blocks within prefect_test_harness?

I am writing a test to run a flow which uses blocks.

from prefect.testing.utilities import prefect_test_harness
from flows.flow import (
    my_flow, Parameters

def test_my_flow():
  with prefect_test_harness():

However, it doesn’t seem able to find the block definitions even after I do prefect profile use <profile_with_blocks> before running the test.

ValueError: Unable to find block document named <block-name> for block type <block-type>

Are there any examples of running flow tests that use blocks?

If I simply run the flow with python path/to/ it works fine and has access to all the blocks, but I want to add the flow tests to the CI.

Many thanks,