fix startup when no plugins are configured

appdaemon/plugin_management.py

@@ -469,23 +469,23 @@ async def wait_for_plugins(self, timeout: float | None = None):
             self.AD.loop.create_task(event.wait(), name=f"waiting for {plugin_name} to be ready")
             for plugin_name, event in self._ready_events()
         ]
-        readiness = self.AD.loop.create_task(
-            asyncio.wait(wait_tasks, timeout=timeout, return_when=asyncio.ALL_COMPLETED),
-            name="waiting for all plugins to be ready",
-        )
+        if wait_tasks:
+            readiness = self.AD.loop.create_task(
+                asyncio.wait(wait_tasks, timeout=timeout, return_when=asyncio.ALL_COMPLETED),
+                name="waiting for all plugins to be ready",
+            )
 
-        early_stop = self.AD.loop.create_task(self.AD.stop_event.wait(), name="waiting for appdaemon to stop")
-        await self.AD.loop.create_task(
-            asyncio.wait((readiness, early_stop), timeout=timeout, return_when=asyncio.FIRST_COMPLETED),
-            name="waiting for plugins or stop event",
-        )
-        if readiness.done():
-            # The readiness wait completed
-            self.logger.info("All plugins ready")
-        elif self.AD.stopping:
-            self.logger.info("AppDaemon stopping before all plugins ready, cancelling readiness waits")
-            for task in wait_tasks:
-                task.cancel()
+            early_stop = self.AD.loop.create_task(self.AD.stop_event.wait(), name="waiting for appdaemon to stop")
+            await self.AD.loop.create_task(
+                asyncio.wait((readiness, early_stop), timeout=timeout, return_when=asyncio.FIRST_COMPLETED),
+                name="waiting for plugins or stop event",
+            )
+            if self.AD.stopping:
+                self.logger.info("AppDaemon stopping before all plugins ready, cancelling readiness waits")
+                for task in wait_tasks:
+                    task.cancel()
+                return
+        self.logger.info("All plugins ready")
 
     def get_config_for_namespace(self, namespace: str) -> PluginConfig:
         plugin_name = self.get_plugin_from_namespace(namespace)

tests/functional/test_startup.py

@@ -23,3 +23,20 @@ async def test_hello_world(ad: AppDaemon, caplog: pytest.LogCaptureFixture, app_
 
     assert "Hello from AppDaemon" in caplog.text
     assert "You are now ready to run Apps!" in caplog.text
+
+
+@pytest.mark.ci
+@pytest.mark.functional
+@pytest.mark.asyncio(loop_scope="session")
+async def test_no_plugins(ad_obj: AppDaemon, caplog: pytest.LogCaptureFixture) -> None:
+    """Ensure that apps start correctly when there are no plugins configured."""
+    ad_obj.config.plugins = {}
+    ad_obj.app_dir = ad_obj.config_dir / "apps/hello_world"
+
+    ad_obj.start()
+    with caplog.at_level(logging.INFO, logger="AppDaemon"):
+        async with ad_obj.app_management.app_run_context("hello_world"):
+            await ad_obj.utility.app_update_event.wait()
+
+    await ad_obj.stop()
+    assert not any(r.levelname == "ERROR" for r in caplog.records)