lint fixes (tests)

tests/conftest.py

@@ -1,5 +1,10 @@
-import pytest
+'''
+Test fixtures
+'''
 import base64
+
+import pytest
+
 from jail2ban import create_app
 
 
@@ -21,14 +26,23 @@ def app():
 
 @pytest.fixture()
 def client(app):
+    '''
+    Create a synthetic client
+    '''
     return app.test_client()
 
 
 @pytest.fixture()
 def runner(app):
+    '''
+    Create a synthetic runner
+    '''
     return app.test_cli_runner()
 
 
 @pytest.fixture()
 def valid_credentials():
+    '''
+    Mock authentication for the test
+    '''
     return base64.b64encode(b"test.example.com:testpassword").decode("utf-8")