refactor, split to two versions - cli and service

{{cookiecutter.project_slug}}/tests/test_service.py

@@ -0,0 +1,30 @@
+from __future__ import annotations
+
+import threading
+
+from {{ cookiecutter.package_name }} import service
+
+
+def test_run_stops_when_event_set() -> None:
+    stop = threading.Event()
+    stop.set()  # already requested to stop
+    service.run(stop, interval=0.01)  # returns immediately, no hang
+
+
+def test_run_handles_polled_items(monkeypatch) -> None:
+    handled: list[object] = []
+    stop = threading.Event()
+
+    def fake_handle(item: object) -> None:
+        handled.append(item)
+        stop.set()  # stop after the first batch
+
+    monkeypatch.setattr(service, "poll_once", lambda: ["a", "b"])
+    monkeypatch.setattr(service, "handle", fake_handle)
+
+    service.run(stop, interval=0.01)
+    assert handled == ["a", "b"]
+
+
+def test_poll_once_default_empty() -> None:
+    assert service.poll_once() == []