sup <@ULVA73B9P> where can i find prefect recipes ...
# ask-marvin
d
sup @Marvin where can i find prefect recipes to learn the best way to run mock tests for my prefect flows in a ci pipeline scenario
m
For setting up CI/CD pipelines to test Prefect flows, you can utilize GitHub Actions, which is well-documented in Prefect's guides. Here's a brief overview: Deploying Prefect Flows Using CI/CD - Use GitHub Actions to automate the deployment of Prefect flows. - Prefect supports two primary methods for creating deployments:
Flow.deploy
method or a
prefect.yaml
configuration file. - Your CI/CD pipeline can build and push Docker images containing your flow code to Docker Hub, then deploy it to Prefect Cloud. - Store sensitive information like
PREFECT_API_URL
and
PREFECT_API_KEY
as secrets in your repository for secure and non-interactive deployments. You can find detailed documentation here: CI/CD With Prefect Testing Prefect Flows - Prefect provides a context manager for unit testing which runs flows and tasks against a temporary local SQLite database. - Example using `prefect_test_harness`:
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from prefect import flow
  from prefect.testing.utilities import prefect_test_harness
  
  @flow
  def my_favorite_flow():
      return 42

  def test_my_favorite_flow():
      with prefect_test_harness():
          assert my_favorite_flow() == 42
- This can also be used with `pytest`:
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import pytest
  from prefect import flow
  from prefect.testing.utilities import prefect_test_harness
  
  @pytest.fixture(autouse=True, scope="session")
  def prefect_test_fixture():
      with prefect_test_harness():
          yield
  
  @flow
  def my_favorite_flow():
      return 42

  def test_my_favorite_flow():
      assert my_favorite_flow() == 42
- Scoping the fixture to the session level is recommended for efficiency. Detailed information on testing can be found here: Testing Prefect Flows A relevant code example can also be found below for concurrent tasks and flows: Pefect Tasks Example These resources should help with setting up and running CI pipelines while ensuring your Prefect flows are adequately tested.