Testing a task

To test a task Quart-Tasks provides a special test_run method,

quart_tasks = QuartTasks(app)

@quart_tasks.periodic(timedelta(seconds=2))
async def my_task() -> None:
    ...  # Do something

async def test_my_task() -> None:
    await quart_tasks.test_run("my_task")
    assert ...  # Task has resulted in expected changes

This is better than running my_task directly as it ensures that the before and after task functions are called.

If the task raises and exception that will be raised from the test_run method e.g.

async def test_my_task_raises() -> None:
    with pytest.raises(Exception):  # For example
        await quart_tasks.test_run("my_task")