feat(taskworker) Add test coverage for imports + schedules (#90179)

Add assertions to make sure that all import paths exist, and that all
schedules are well formed.

Fixes #90103

Author: markstory

src/sentry/taskworker/workerchild.py

@@ -133,8 +133,6 @@ def run_worker(
         processing_pool_name: str,
         process_type: str,
     ) -> None:
-        # print("!!!!!! STARTING WORKER !!!!!!!")
-
         processed_task_count = 0
 
         def handle_alarm(signum: int, frame: FrameType | None) -> None:

tests/sentry/taskworker/test_config.py

@@ -0,0 +1,29 @@
+from datetime import timedelta
+
+from django.conf import settings
+
+from sentry.conf.types.taskworker import crontab
+from sentry.taskworker.registry import taskregistry
+
+
+def test_import_paths():
+    for path in settings.TASKWORKER_IMPORTS:
+        try:
+            __import__(path)
+        except ImportError:
+            raise AssertionError(f"Unable to import {path} from TASKWORKER_IMPORTS")
+
+
+def test_taskworker_schedule() -> None:
+    for schedule_name, config in settings.TASKWORKER_SCHEDULES.items():
+        assert config["task"], f"schedule {schedule_name} is missing a task name"
+        (namespace, taskname) = config["task"].split(":")
+        assert taskregistry.get_task(
+            namespace, taskname
+        ), f"task for {schedule_name} is not registered"
+
+        assert config["schedule"], f"Schedule {schedule_name} is missing a schedule"
+        schedule = config.get("schedule")
+        assert isinstance(
+            schedule, (timedelta, crontab)
+        ), f"Schedule {schedule_name} has a schedule of type {type(schedule)}"