Update test_cli.py

Fix missing import

Signed-off-by: Benji <49796265+rowingdude@users.noreply.github.com>

Author: rowingdude

tests/test_cli.py

@@ -1,5 +1,5 @@
 import pytest
-from unittest.mock import patch, MagicMock, AsyncMock
+from unittest.mock import patch, MagicMock, AsyncMock, mock_open
 import sys
 import asyncio
 from io import StringIO
@@ -234,4 +234,4 @@ def test_main_with_config_file(mock_analyzer):
     assert call_args[4] == False  # compute hashes
     assert call_args[5] == 'csv'  # export format
     assert call_args[6] == mock_profile  # profile object
-    assert call_args[7] == 1000  # chunk size
+    assert call_args[7] == 1000  # chunk size