Improve test coverage

Author: elacuesta

tests/tests_asyncio/test_extensions.py

@@ -28,7 +28,7 @@
 
 
 def mock_crawler_with_handlers() -> dict:
-    handlers = {}
+    handlers = {"unused": MagicMock()}
     for schema, pid in SCHEMA_PID_MAP.items():
         process = MagicMock()
         process.pid = pid

tests/tests_asyncio/test_provider.py

@@ -71,6 +71,18 @@ def test_default_provider_implements_protocol(self):
 
 
 class TestPlaywrightBrowserProvider(IsolatedAsyncioTestCase):
+    @allow_windows
+    async def test_launch_before_start_raises(self):
+        provider = PlaywrightBrowserProvider(Config.from_settings(Settings({})))
+        with pytest.raises(
+            RuntimeError, match="start\\(\\) must be awaited before launch_browser"
+        ):
+            await provider.launch_browser()
+        with pytest.raises(
+            RuntimeError, match="start\\(\\) must be awaited before launch_persistent_context"
+        ):
+            await provider.launch_persistent_context({})
+
     @allow_windows
     async def test_lifecycle(self):
         config = Config.from_settings(