Improve the mock_integration_frame test fixture (#139850)

* Improve the mock_integration_frame test fixture

* Update test

tests/conftest.py

@@ -16,6 +16,7 @@ import reprlib
 from shutil import rmtree
 import sqlite3
 import ssl
+import sys
 import threading
 from typing import TYPE_CHECKING, Any, cast
 from unittest.mock import AsyncMock, MagicMock, Mock, _patch, patch
@@ -1889,12 +1890,15 @@ def mock_integration_frame(integration_frame_path: str) -> Generator[Mock]:
     Defaults to calling from `hue` core integration, and can be parametrized
     with `integration_frame_path`.
     """
+    correct_filename = f"/home/paulus/{integration_frame_path}/light.py"
+    correct_module_name = f"{integration_frame_path.replace('/', '.')}.light"
     correct_frame = Mock(
         filename=f"/home/paulus/{integration_frame_path}/light.py",
         lineno="23",
         line="self.light.is_on",
     )
     with (
+        patch.dict(sys.modules, {correct_module_name: Mock(__file__=correct_filename)}),
         patch(
             "homeassistant.helpers.frame.linecache.getline",
             return_value=correct_frame.line,