diff --git a/tests/conftest.py b/tests/conftest.py
index f9b3b3a..540d81f 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -1,9 +1,11 @@
+""" Global test fixtures and Mocks """
+
 from pathlib import Path
 
 import pytest
 
 
-class DummySheet:
+class MockWorkbookSheet:
     def __init__(self, data):
         self._data = data