diff --git a/bulkredditdownloader/tests/test_oauth2.py b/bulkredditdownloader/tests/test_oauth2.py
index c5a63b7..ced7605 100644
--- a/bulkredditdownloader/tests/test_oauth2.py
+++ b/bulkredditdownloader/tests/test_oauth2.py
@@ -2,6 +2,7 @@
 # coding=utf-8
 
 import configparser
+from pathlib import Path
 from unittest.mock import MagicMock
 
 import pytest
@@ -42,10 +43,10 @@ def test_split_scopes(test_scopes: str, expected: set[str]):
 
 @pytest.mark.online
 @pytest.mark.parametrize('test_scopes', (
-    ('random',),
-    ('scope', 'another_scope'),
+    {'random', },
+    {'scope', 'another_scope'},
 ))
-def test_check_scopes_bad(test_scopes: list[str]):
+def test_check_scopes_bad(test_scopes: set[str]):
     with pytest.raises(BulkDownloaderException):
         OAuth2Authenticator._check_scopes(test_scopes)
 
@@ -53,14 +54,18 @@ def test_check_scopes_bad(test_scopes: list[str]):
 def test_token_manager_read(example_config: configparser.ConfigParser):
     mock_authoriser = MagicMock()
     mock_authoriser.refresh_token = None
-    test_manager = OAuth2TokenManager(example_config)
+    test_manager = OAuth2TokenManager(example_config, None)
     test_manager.pre_refresh_callback(mock_authoriser)
     assert mock_authoriser.refresh_token == example_config.get('DEFAULT', 'user_token')
 
 
-def test_token_manager_write(example_config: configparser.ConfigParser):
+def test_token_manager_write(example_config: configparser.ConfigParser, tmp_path: Path):
+    test_path = tmp_path / 'test.cfg'
     mock_authoriser = MagicMock()
     mock_authoriser.refresh_token = 'changed_token'
-    test_manager = OAuth2TokenManager(example_config)
+    test_manager = OAuth2TokenManager(example_config, test_path)
     test_manager.post_refresh_callback(mock_authoriser)
     assert example_config.get('DEFAULT', 'user_token') == 'changed_token'
+    with open(test_path, 'r') as file:
+        file_contents = file.read()
+    assert 'user_token = changed_token' in file_contents