Greg Linklater
02/07/2024, 1:55 PMGlime
02/07/2024, 1:56 PMGreg Linklater
02/07/2024, 1:59 PMGreg Linklater
02/07/2024, 1:59 PMGlime
02/07/2024, 2:00 PMunittest
or pytest
, and Flyte's Python SDK, flytekit
. Writing a Unit Test for a Flyte Task 1. Define Your Task: First, ensure you have a Flyte task defined using the @task
decorator provided by flytekit
. from flytekit import task @task def add(a: int, b: int) -> int: return a + b
2. Write the Test: Use a testing framework like pytest
to write a test for the task. You can directly call the task function as you would with any Python function. def test_add(): assert add(a=1, b=2) == 3
Writing a Unit Test for a Flyte Workflow 1. Define Your Workflow: Ensure you have a Flyte workflow defined using the @workflow
decorator. from flytekit import workflow @workflow def my_workflow(a: int, b: int) -> int: return add(a=a, b=b)
2. Write the Test: Similar to testing a task, you can directly call the workflow function in your test. def test_my_workflow(): assert my_workflow(a=1, b=2) == 3
Running the Tests • Use pytest
or your preferred test runner to execute the tests. Ensure your testing environment has access to the necessary Flyte dependencies. Best Practices • Isolation: Keep your tests isolated from external dependencies. For tasks or workflows that interact with external systems, consider mocking those interactions. • Test Data: Use representative test data that covers the expected range of inputs your tasks and workflows might handle. • Continuous Integration: Integrate your tests into a CI/CD pipeline to automatically run them against new changes. This approach allows you to validate the logic of your Flyte tasks and workflows without deploying them to a Flyte cluster, ensuring that your data processing logic behaves as expected. For more detailed examples and advanced testing scenarios, consider referring to the official Flyte documentation or the Flyte GitHub repository, where you might find examples specific to your use