diff --git a/selfprivacy_api/resources/services/restic.py b/selfprivacy_api/resources/services/restic.py
index 863d090..282488d 100644
--- a/selfprivacy_api/resources/services/restic.py
+++ b/selfprivacy_api/resources/services/restic.py
@@ -147,23 +147,26 @@ class AsyncRestoreBackup(Resource):
             401:
                 description: Unauthorized
         """
-        backup_restoration_command = ["restic", "-r", "rclone:backblaze:sfbackup", "var", "--json"]
+        backup_restoration_command = [
+            "restic",
+            "-r",
+            "rclone:backblaze:sfbackup",
+            "var",
+            "--json",
+        ]
 
-        with open("/tmp/backup.log", "w", encoding="utf-8") as backup_log_file_descriptor:
+        with open(
+            "/tmp/backup.log", "w", encoding="utf-8"
+        ) as backup_log_file_descriptor:
             with subprocess.Popen(
                 backup_restoration_command,
                 shell=False,
                 stdout=subprocess.PIPE,
                 stderr=backup_log_file_descriptor,
             ) as backup_restoration_process_descriptor:
-                backup_restoration_status = (
-                    "Backup restoration procedure started"
-                )
-            
-            return {
-                "status": 0,
-                "message": backup_restoration_status
-            }
+                backup_restoration_status = "Backup restoration procedure started"
+
+            return {"status": 0, "message": backup_restoration_status}
 
 
 api.add_resource(ListAllBackups, "/restic/backup/list")
diff --git a/selfprivacy_api/resources/services/update.py b/selfprivacy_api/resources/services/update.py
index 1d15fbe..73698d5 100644
--- a/selfprivacy_api/resources/services/update.py
+++ b/selfprivacy_api/resources/services/update.py
@@ -32,28 +32,24 @@ class PullRepositoryChanges(Resource):
         current_working_directory = os.getcwd()
         os.chdir("/etc/nixos")
 
-
         git_pull_process_descriptor = subprocess.Popen(
             git_pull_command,
             stdout=subprocess.PIPE,
             stderr=subprocess.STDOUT,
-            shell=False
+            shell=False,
         )
 
-
         git_pull_process_descriptor.communicate()[0]
 
         os.chdir(current_working_directory)
 
         if git_pull_process_descriptor.returncode == 0:
-            return {
-                "status": 0,
-                "message": "Update completed successfully"
-            }
+            return {"status": 0, "message": "Update completed successfully"}
         elif git_pull_process_descriptor.returncode > 0:
             return {
                 "status": git_pull_process_descriptor.returncode,
-                "message": "Something went wrong"
+                "message": "Something went wrong",
             }, 500
 
+
 api.add_resource(PullRepositoryChanges, "/update")
diff --git a/selfprivacy_api/utils.py b/selfprivacy_api/utils.py
index 4970db0..b0a7686 100644
--- a/selfprivacy_api/utils.py
+++ b/selfprivacy_api/utils.py
@@ -7,6 +7,7 @@ from flask import current_app
 
 USERDATA_FILE = "/etc/nixos/userdata/userdata.json"
 
+
 def get_domain():
     """Get domain from /var/domain without trailing new line"""
     with open("/var/domain", "r", encoding="utf-8") as domain_file:
@@ -18,9 +19,7 @@ class WriteUserData(object):
     """Write userdata.json with lock"""
 
     def __init__(self):
-        self.userdata_file = open(
-            USERDATA_FILE, "r+", encoding="utf-8"
-        )
+        self.userdata_file = open(USERDATA_FILE, "r+", encoding="utf-8")
         portalocker.lock(self.userdata_file, portalocker.LOCK_EX)
         self.data = json.load(self.userdata_file)
 
@@ -40,9 +39,7 @@ class ReadUserData(object):
     """Read userdata.json with lock"""
 
     def __init__(self):
-        self.userdata_file = open(
-            USERDATA_FILE, "r", encoding="utf-8"
-        )
+        self.userdata_file = open(USERDATA_FILE, "r", encoding="utf-8")
         portalocker.lock(self.userdata_file, portalocker.LOCK_SH)
         self.data = json.load(self.userdata_file)
 
@@ -60,4 +57,3 @@ def validate_ssh_public_key(key):
         if not key.startswith("ssh-rsa"):
             return False
     return True
-    
\ No newline at end of file
diff --git a/tests/conftest.py b/tests/conftest.py
index 72fd132..e963224 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -5,10 +5,12 @@ from selfprivacy_api.app import create_app
 
 @pytest.fixture
 def app():
-    app = create_app({
-        "AUTH_TOKEN": "TEST_TOKEN",
-        "ENABLE_SWAGGER": "0",
-    })
+    app = create_app(
+        {
+            "AUTH_TOKEN": "TEST_TOKEN",
+            "ENABLE_SWAGGER": "0",
+        }
+    )
 
     yield app
 
@@ -17,6 +19,7 @@ def app():
 def client(app):
     return app.test_client()
 
+
 class AuthorizedClient(testing.FlaskClient):
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)
@@ -28,11 +31,13 @@ class AuthorizedClient(testing.FlaskClient):
         kwargs["headers"]["Authorization"] = f"Bearer {self.token}"
         return super().open(*args, **kwargs)
 
+
 @pytest.fixture
 def authorized_client(app):
     app.test_client_class = AuthorizedClient
     return app.test_client()
 
+
 @pytest.fixture
 def runner(app):
-    return app.test_cli_runner()
\ No newline at end of file
+    return app.test_cli_runner()
diff --git a/tests/services/test_bitwarden.py b/tests/services/test_bitwarden.py
index 7e009a4..3977253 100644
--- a/tests/services/test_bitwarden.py
+++ b/tests/services/test_bitwarden.py
@@ -1,43 +1,54 @@
 import json
 import pytest
 
+
 def read_json(file_path):
     with open(file_path, "r") as f:
         return json.load(f)
 
+
 ###############################################################################
 
+
 @pytest.fixture
 def bitwarden_off(mocker, datadir):
     mocker.patch("selfprivacy_api.utils.USERDATA_FILE", new=datadir / "turned_off.json")
     assert read_json(datadir / "turned_off.json")["bitwarden"]["enable"] == False
     return datadir
 
+
 @pytest.fixture
 def bitwarden_on(mocker, datadir):
     mocker.patch("selfprivacy_api.utils.USERDATA_FILE", new=datadir / "turned_on.json")
     assert read_json(datadir / "turned_on.json")["bitwarden"]["enable"] == True
     return datadir
 
+
 @pytest.fixture
 def bitwarden_enable_undefined(mocker, datadir):
-    mocker.patch("selfprivacy_api.utils.USERDATA_FILE", new=datadir / "enable_undefined.json")
+    mocker.patch(
+        "selfprivacy_api.utils.USERDATA_FILE", new=datadir / "enable_undefined.json"
+    )
     assert "enable" not in read_json(datadir / "enable_undefined.json")["bitwarden"]
     return datadir
 
+
 @pytest.fixture
 def bitwarden_undefined(mocker, datadir):
     mocker.patch("selfprivacy_api.utils.USERDATA_FILE", new=datadir / "undefined.json")
     assert "bitwarden" not in read_json(datadir / "undefined.json")
     return datadir
 
+
 ###############################################################################
 
+
 @pytest.mark.parametrize("endpoint", ["enable", "disable"])
 def test_unauthorized(client, bitwarden_off, endpoint):
     response = client.post(f"/services/bitwarden/{endpoint}")
     assert response.status_code == 401
 
+
 @pytest.mark.parametrize("endpoint", ["enable", "disable"])
 def test_illegal_methods(authorized_client, bitwarden_off, endpoint):
     response = authorized_client.get(f"/services/bitwarden/{endpoint}")
@@ -47,34 +58,68 @@ def test_illegal_methods(authorized_client, bitwarden_off, endpoint):
     response = authorized_client.delete(f"/services/bitwarden/{endpoint}")
     assert response.status_code == 405
 
-@pytest.mark.parametrize("endpoint,target_file", [("enable", "turned_on.json"), ("disable", "turned_off.json")])
+
+@pytest.mark.parametrize(
+    "endpoint,target_file",
+    [("enable", "turned_on.json"), ("disable", "turned_off.json")],
+)
 def test_switch_from_off(authorized_client, bitwarden_off, endpoint, target_file):
     response = authorized_client.post(f"/services/bitwarden/{endpoint}")
     assert response.status_code == 200
-    assert read_json(bitwarden_off / "turned_off.json") == read_json(bitwarden_off / target_file)
+    assert read_json(bitwarden_off / "turned_off.json") == read_json(
+        bitwarden_off / target_file
+    )
 
-@pytest.mark.parametrize("endpoint,target_file", [("enable", "turned_on.json"), ("disable", "turned_off.json")])
+
+@pytest.mark.parametrize(
+    "endpoint,target_file",
+    [("enable", "turned_on.json"), ("disable", "turned_off.json")],
+)
 def test_switch_from_on(authorized_client, bitwarden_on, endpoint, target_file):
     response = authorized_client.post(f"/services/bitwarden/{endpoint}")
     assert response.status_code == 200
-    assert read_json(bitwarden_on / "turned_on.json") == read_json(bitwarden_on / target_file)
+    assert read_json(bitwarden_on / "turned_on.json") == read_json(
+        bitwarden_on / target_file
+    )
 
-@pytest.mark.parametrize("endpoint,target_file", [("enable", "turned_on.json"), ("disable", "turned_off.json")])
+
+@pytest.mark.parametrize(
+    "endpoint,target_file",
+    [("enable", "turned_on.json"), ("disable", "turned_off.json")],
+)
 def test_switch_twice(authorized_client, bitwarden_off, endpoint, target_file):
     response = authorized_client.post(f"/services/bitwarden/{endpoint}")
     assert response.status_code == 200
     response = authorized_client.post(f"/services/bitwarden/{endpoint}")
     assert response.status_code == 200
-    assert read_json(bitwarden_off / "turned_off.json") == read_json(bitwarden_off / target_file)
+    assert read_json(bitwarden_off / "turned_off.json") == read_json(
+        bitwarden_off / target_file
+    )
 
-@pytest.mark.parametrize("endpoint,target_file", [("enable", "turned_on.json"), ("disable", "turned_off.json")])
-def test_on_attribute_deleted(authorized_client, bitwarden_enable_undefined, endpoint, target_file):
+
+@pytest.mark.parametrize(
+    "endpoint,target_file",
+    [("enable", "turned_on.json"), ("disable", "turned_off.json")],
+)
+def test_on_attribute_deleted(
+    authorized_client, bitwarden_enable_undefined, endpoint, target_file
+):
     response = authorized_client.post(f"/services/bitwarden/{endpoint}")
     assert response.status_code == 200
-    assert read_json(bitwarden_enable_undefined / "enable_undefined.json") == read_json(bitwarden_enable_undefined / target_file)
+    assert read_json(bitwarden_enable_undefined / "enable_undefined.json") == read_json(
+        bitwarden_enable_undefined / target_file
+    )
 
-@pytest.mark.parametrize("endpoint,target_file", [("enable", "turned_on.json"), ("disable", "turned_off.json")])
-def test_on_bitwarden_undefined(authorized_client, bitwarden_undefined, endpoint, target_file):
+
+@pytest.mark.parametrize(
+    "endpoint,target_file",
+    [("enable", "turned_on.json"), ("disable", "turned_off.json")],
+)
+def test_on_bitwarden_undefined(
+    authorized_client, bitwarden_undefined, endpoint, target_file
+):
     response = authorized_client.post(f"/services/bitwarden/{endpoint}")
     assert response.status_code == 200
-    assert read_json(bitwarden_undefined / "undefined.json") == read_json(bitwarden_undefined / target_file)
+    assert read_json(bitwarden_undefined / "undefined.json") == read_json(
+        bitwarden_undefined / target_file
+    )
diff --git a/tests/services/test_gitea.py b/tests/services/test_gitea.py
index b2d57b9..0a50c19 100644
--- a/tests/services/test_gitea.py
+++ b/tests/services/test_gitea.py
@@ -1,43 +1,54 @@
 import json
 import pytest
 
+
 def read_json(file_path):
     with open(file_path, "r") as f:
         return json.load(f)
 
+
 ###############################################################################
 
+
 @pytest.fixture
 def gitea_off(mocker, datadir):
     mocker.patch("selfprivacy_api.utils.USERDATA_FILE", new=datadir / "turned_off.json")
     assert read_json(datadir / "turned_off.json")["gitea"]["enable"] == False
     return datadir
 
+
 @pytest.fixture
 def gitea_on(mocker, datadir):
     mocker.patch("selfprivacy_api.utils.USERDATA_FILE", new=datadir / "turned_on.json")
     assert read_json(datadir / "turned_on.json")["gitea"]["enable"] == True
     return datadir
 
+
 @pytest.fixture
 def gitea_enable_undefined(mocker, datadir):
-    mocker.patch("selfprivacy_api.utils.USERDATA_FILE", new=datadir / "enable_undefined.json")
+    mocker.patch(
+        "selfprivacy_api.utils.USERDATA_FILE", new=datadir / "enable_undefined.json"
+    )
     assert "enable" not in read_json(datadir / "enable_undefined.json")["gitea"]
     return datadir
 
+
 @pytest.fixture
 def gitea_undefined(mocker, datadir):
     mocker.patch("selfprivacy_api.utils.USERDATA_FILE", new=datadir / "undefined.json")
     assert "gitea" not in read_json(datadir / "undefined.json")
     return datadir
 
+
 ###############################################################################
 
+
 @pytest.mark.parametrize("endpoint", ["enable", "disable"])
 def test_unauthorized(client, gitea_off, endpoint):
     response = client.post(f"/services/gitea/{endpoint}")
     assert response.status_code == 401
 
+
 @pytest.mark.parametrize("endpoint", ["enable", "disable"])
 def test_illegal_methods(authorized_client, gitea_off, endpoint):
     response = authorized_client.get(f"/services/gitea/{endpoint}")
@@ -47,34 +58,64 @@ def test_illegal_methods(authorized_client, gitea_off, endpoint):
     response = authorized_client.delete(f"/services/gitea/{endpoint}")
     assert response.status_code == 405
 
-@pytest.mark.parametrize("endpoint,target_file", [("enable", "turned_on.json"), ("disable", "turned_off.json")])
+
+@pytest.mark.parametrize(
+    "endpoint,target_file",
+    [("enable", "turned_on.json"), ("disable", "turned_off.json")],
+)
 def test_switch_from_off(authorized_client, gitea_off, endpoint, target_file):
     response = authorized_client.post(f"/services/gitea/{endpoint}")
     assert response.status_code == 200
-    assert read_json(gitea_off / "turned_off.json") == read_json(gitea_off / target_file)
+    assert read_json(gitea_off / "turned_off.json") == read_json(
+        gitea_off / target_file
+    )
 
-@pytest.mark.parametrize("endpoint,target_file", [("enable", "turned_on.json"), ("disable", "turned_off.json")])
+
+@pytest.mark.parametrize(
+    "endpoint,target_file",
+    [("enable", "turned_on.json"), ("disable", "turned_off.json")],
+)
 def test_switch_from_on(authorized_client, gitea_on, endpoint, target_file):
     response = authorized_client.post(f"/services/gitea/{endpoint}")
     assert response.status_code == 200
     assert read_json(gitea_on / "turned_on.json") == read_json(gitea_on / target_file)
 
-@pytest.mark.parametrize("endpoint,target_file", [("enable", "turned_on.json"), ("disable", "turned_off.json")])
+
+@pytest.mark.parametrize(
+    "endpoint,target_file",
+    [("enable", "turned_on.json"), ("disable", "turned_off.json")],
+)
 def test_switch_twice(authorized_client, gitea_off, endpoint, target_file):
     response = authorized_client.post(f"/services/gitea/{endpoint}")
     assert response.status_code == 200
     response = authorized_client.post(f"/services/gitea/{endpoint}")
     assert response.status_code == 200
-    assert read_json(gitea_off / "turned_off.json") == read_json(gitea_off / target_file)
+    assert read_json(gitea_off / "turned_off.json") == read_json(
+        gitea_off / target_file
+    )
 
-@pytest.mark.parametrize("endpoint,target_file", [("enable", "turned_on.json"), ("disable", "turned_off.json")])
-def test_on_attribute_deleted(authorized_client, gitea_enable_undefined, endpoint, target_file):
+
+@pytest.mark.parametrize(
+    "endpoint,target_file",
+    [("enable", "turned_on.json"), ("disable", "turned_off.json")],
+)
+def test_on_attribute_deleted(
+    authorized_client, gitea_enable_undefined, endpoint, target_file
+):
     response = authorized_client.post(f"/services/gitea/{endpoint}")
     assert response.status_code == 200
-    assert read_json(gitea_enable_undefined / "enable_undefined.json") == read_json(gitea_enable_undefined / target_file)
+    assert read_json(gitea_enable_undefined / "enable_undefined.json") == read_json(
+        gitea_enable_undefined / target_file
+    )
 
-@pytest.mark.parametrize("endpoint,target_file", [("enable", "turned_on.json"), ("disable", "turned_off.json")])
+
+@pytest.mark.parametrize(
+    "endpoint,target_file",
+    [("enable", "turned_on.json"), ("disable", "turned_off.json")],
+)
 def test_on_gitea_undefined(authorized_client, gitea_undefined, endpoint, target_file):
     response = authorized_client.post(f"/services/gitea/{endpoint}")
     assert response.status_code == 200
-    assert read_json(gitea_undefined / "undefined.json") == read_json(gitea_undefined / target_file)
+    assert read_json(gitea_undefined / "undefined.json") == read_json(
+        gitea_undefined / target_file
+    )
diff --git a/tests/services/test_mailserver.py b/tests/services/test_mailserver.py
index aa008c1..f45ad1e 100644
--- a/tests/services/test_mailserver.py
+++ b/tests/services/test_mailserver.py
@@ -2,14 +2,18 @@ import base64
 import json
 import pytest
 
+
 def read_json(file_path):
     with open(file_path, "r", encoding="utf-8") as f:
         return json.load(f)
 
+
 ###############################################################################
 
-class ProcessMock():
+
+class ProcessMock:
     """Mock subprocess.Popen"""
+
     def __init__(self, args, **kwargs):
         self.args = args
         self.kwargs = kwargs
@@ -17,6 +21,7 @@ class ProcessMock():
     def communicate():
         return (b"I am a DKIM key", None)
 
+
 class NoFileMock(ProcessMock):
     def communicate():
         return (b"", None)
@@ -25,24 +30,36 @@ class NoFileMock(ProcessMock):
 @pytest.fixture
 def mock_subproccess_popen(mocker):
     mock = mocker.patch("subprocess.Popen", autospec=True, return_value=ProcessMock)
-    mocker.patch("selfprivacy_api.resources.services.mailserver.get_domain", autospec=True, return_value="example.com")
+    mocker.patch(
+        "selfprivacy_api.resources.services.mailserver.get_domain",
+        autospec=True,
+        return_value="example.com",
+    )
     mocker.patch("os.path.exists", autospec=True, return_value=True)
-    return mock    
+    return mock
+
 
 @pytest.fixture
 def mock_no_file(mocker):
     mock = mocker.patch("subprocess.Popen", autospec=True, return_value=NoFileMock)
-    mocker.patch("selfprivacy_api.resources.services.mailserver.get_domain", autospec=True, return_value="example.com")
+    mocker.patch(
+        "selfprivacy_api.resources.services.mailserver.get_domain",
+        autospec=True,
+        return_value="example.com",
+    )
     mocker.patch("os.path.exists", autospec=True, return_value=False)
     return mock
 
+
 ###############################################################################
 
+
 def test_unauthorized(client, mock_subproccess_popen):
     """Test unauthorized"""
     response = client.get("/services/mailserver/dkim")
     assert response.status_code == 401
 
+
 def test_illegal_methods(authorized_client, mock_subproccess_popen):
     response = authorized_client.post("/services/mailserver/dkim")
     assert response.status_code == 405
@@ -51,15 +68,20 @@ def test_illegal_methods(authorized_client, mock_subproccess_popen):
     response = authorized_client.delete("/services/mailserver/dkim")
     assert response.status_code == 405
 
+
 def test_dkim_key(authorized_client, mock_subproccess_popen):
     """Test DKIM key"""
     response = authorized_client.get("/services/mailserver/dkim")
     assert response.status_code == 200
     assert base64.b64decode(response.data) == b"I am a DKIM key"
-    assert mock_subproccess_popen.call_args[0][0] == ["cat", "/var/dkim/example.com.selector.txt"]
+    assert mock_subproccess_popen.call_args[0][0] == [
+        "cat",
+        "/var/dkim/example.com.selector.txt",
+    ]
+
 
 def test_no_dkim_key(authorized_client, mock_no_file):
     """Test no DKIM key"""
     response = authorized_client.get("/services/mailserver/dkim")
     assert response.status_code == 404
-    assert mock_no_file.called == False
\ No newline at end of file
+    assert mock_no_file.called == False
diff --git a/tests/services/test_nextcloud.py b/tests/services/test_nextcloud.py
index 031e0f2..b05c363 100644
--- a/tests/services/test_nextcloud.py
+++ b/tests/services/test_nextcloud.py
@@ -1,43 +1,54 @@
 import json
 import pytest
 
+
 def read_json(file_path):
     with open(file_path, "r") as f:
         return json.load(f)
 
+
 ###############################################################################
 
+
 @pytest.fixture
 def nextcloud_off(mocker, datadir):
     mocker.patch("selfprivacy_api.utils.USERDATA_FILE", new=datadir / "turned_off.json")
     assert read_json(datadir / "turned_off.json")["nextcloud"]["enable"] == False
     return datadir
 
+
 @pytest.fixture
 def nextcloud_on(mocker, datadir):
     mocker.patch("selfprivacy_api.utils.USERDATA_FILE", new=datadir / "turned_on.json")
     assert read_json(datadir / "turned_on.json")["nextcloud"]["enable"] == True
     return datadir
 
+
 @pytest.fixture
 def nextcloud_enable_undefined(mocker, datadir):
-    mocker.patch("selfprivacy_api.utils.USERDATA_FILE", new=datadir / "enable_undefined.json")
+    mocker.patch(
+        "selfprivacy_api.utils.USERDATA_FILE", new=datadir / "enable_undefined.json"
+    )
     assert "enable" not in read_json(datadir / "enable_undefined.json")["nextcloud"]
     return datadir
 
+
 @pytest.fixture
 def nextcloud_undefined(mocker, datadir):
     mocker.patch("selfprivacy_api.utils.USERDATA_FILE", new=datadir / "undefined.json")
     assert "nextcloud" not in read_json(datadir / "undefined.json")
     return datadir
 
+
 ###############################################################################
 
+
 @pytest.mark.parametrize("endpoint", ["enable", "disable"])
 def test_unauthorized(client, nextcloud_off, endpoint):
     response = client.post(f"/services/nextcloud/{endpoint}")
     assert response.status_code == 401
 
+
 @pytest.mark.parametrize("endpoint", ["enable", "disable"])
 def test_illegal_methods(authorized_client, nextcloud_off, endpoint):
     response = authorized_client.get(f"/services/nextcloud/{endpoint}")
@@ -47,34 +58,66 @@ def test_illegal_methods(authorized_client, nextcloud_off, endpoint):
     response = authorized_client.delete(f"/services/nextcloud/{endpoint}")
     assert response.status_code == 405
 
-@pytest.mark.parametrize("endpoint,target_file", [("enable", "turned_on.json"), ("disable", "turned_off.json")])
+
+@pytest.mark.parametrize(
+    "endpoint,target_file",
+    [("enable", "turned_on.json"), ("disable", "turned_off.json")],
+)
 def test_switch_from_off(authorized_client, nextcloud_off, endpoint, target_file):
     response = authorized_client.post(f"/services/nextcloud/{endpoint}")
     assert response.status_code == 200
-    assert read_json(nextcloud_off / "turned_off.json") == read_json(nextcloud_off / target_file)
+    assert read_json(nextcloud_off / "turned_off.json") == read_json(
+        nextcloud_off / target_file
+    )
 
-@pytest.mark.parametrize("endpoint,target_file", [("enable", "turned_on.json"), ("disable", "turned_off.json")])
+
+@pytest.mark.parametrize(
+    "endpoint,target_file",
+    [("enable", "turned_on.json"), ("disable", "turned_off.json")],
+)
 def test_switch_from_on(authorized_client, nextcloud_on, endpoint, target_file):
     response = authorized_client.post(f"/services/nextcloud/{endpoint}")
     assert response.status_code == 200
-    assert read_json(nextcloud_on / "turned_on.json") == read_json(nextcloud_on / target_file)
+    assert read_json(nextcloud_on / "turned_on.json") == read_json(
+        nextcloud_on / target_file
+    )
 
-@pytest.mark.parametrize("endpoint,target_file", [("enable", "turned_on.json"), ("disable", "turned_off.json")])
+
+@pytest.mark.parametrize(
+    "endpoint,target_file",
+    [("enable", "turned_on.json"), ("disable", "turned_off.json")],
+)
 def test_switch_twice(authorized_client, nextcloud_off, endpoint, target_file):
     response = authorized_client.post(f"/services/nextcloud/{endpoint}")
     assert response.status_code == 200
     response = authorized_client.post(f"/services/nextcloud/{endpoint}")
     assert response.status_code == 200
-    assert read_json(nextcloud_off / "turned_off.json") == read_json(nextcloud_off / target_file)
+    assert read_json(nextcloud_off / "turned_off.json") == read_json(
+        nextcloud_off / target_file
+    )
 
-@pytest.mark.parametrize("endpoint,target_file", [("enable", "turned_on.json"), ("disable", "turned_off.json")])
-def test_on_attribute_deleted(authorized_client, nextcloud_enable_undefined, endpoint, target_file):
+
+@pytest.mark.parametrize(
+    "endpoint,target_file",
+    [("enable", "turned_on.json"), ("disable", "turned_off.json")],
+)
+def test_on_attribute_deleted(
+    authorized_client, nextcloud_enable_undefined, endpoint, target_file
+):
     response = authorized_client.post(f"/services/nextcloud/{endpoint}")
     assert response.status_code == 200
-    assert read_json(nextcloud_enable_undefined / "enable_undefined.json") == read_json(nextcloud_enable_undefined / target_file)
+    assert read_json(nextcloud_enable_undefined / "enable_undefined.json") == read_json(
+        nextcloud_enable_undefined / target_file
+    )
+
 
 @pytest.mark.parametrize("endpoint,target", [("enable", True), ("disable", False)])
-def test_on_nextcloud_undefined(authorized_client, nextcloud_undefined, endpoint, target):
+def test_on_nextcloud_undefined(
+    authorized_client, nextcloud_undefined, endpoint, target
+):
     response = authorized_client.post(f"/services/nextcloud/{endpoint}")
     assert response.status_code == 200
-    assert read_json(nextcloud_undefined / "undefined.json")["nextcloud"]["enable"] == target
+    assert (
+        read_json(nextcloud_undefined / "undefined.json")["nextcloud"]["enable"]
+        == target
+    )
diff --git a/tests/services/test_ocserv.py b/tests/services/test_ocserv.py
index 2d658ea..8f43e70 100644
--- a/tests/services/test_ocserv.py
+++ b/tests/services/test_ocserv.py
@@ -1,43 +1,54 @@
 import json
 import pytest
 
+
 def read_json(file_path):
     with open(file_path, "r") as f:
         return json.load(f)
 
+
 ###############################################################################
 
+
 @pytest.fixture
 def ocserv_off(mocker, datadir):
     mocker.patch("selfprivacy_api.utils.USERDATA_FILE", new=datadir / "turned_off.json")
     assert read_json(datadir / "turned_off.json")["ocserv"]["enable"] == False
     return datadir
 
+
 @pytest.fixture
 def ocserv_on(mocker, datadir):
     mocker.patch("selfprivacy_api.utils.USERDATA_FILE", new=datadir / "turned_on.json")
     assert read_json(datadir / "turned_on.json")["ocserv"]["enable"] == True
     return datadir
 
+
 @pytest.fixture
 def ocserv_enable_undefined(mocker, datadir):
-    mocker.patch("selfprivacy_api.utils.USERDATA_FILE", new=datadir / "enable_undefined.json")
+    mocker.patch(
+        "selfprivacy_api.utils.USERDATA_FILE", new=datadir / "enable_undefined.json"
+    )
     assert "enable" not in read_json(datadir / "enable_undefined.json")["ocserv"]
     return datadir
 
+
 @pytest.fixture
 def ocserv_undefined(mocker, datadir):
     mocker.patch("selfprivacy_api.utils.USERDATA_FILE", new=datadir / "undefined.json")
     assert "ocserv" not in read_json(datadir / "undefined.json")
     return datadir
 
+
 ###############################################################################
 
+
 @pytest.mark.parametrize("endpoint", ["enable", "disable"])
 def test_unauthorized(client, ocserv_off, endpoint):
     response = client.post(f"/services/ocserv/{endpoint}")
     assert response.status_code == 401
 
+
 @pytest.mark.parametrize("endpoint", ["enable", "disable"])
 def test_illegal_methods(authorized_client, ocserv_off, endpoint):
     response = authorized_client.get(f"/services/ocserv/{endpoint}")
@@ -47,34 +58,66 @@ def test_illegal_methods(authorized_client, ocserv_off, endpoint):
     response = authorized_client.delete(f"/services/ocserv/{endpoint}")
     assert response.status_code == 405
 
-@pytest.mark.parametrize("endpoint,target_file", [("enable", "turned_on.json"), ("disable", "turned_off.json")])
+
+@pytest.mark.parametrize(
+    "endpoint,target_file",
+    [("enable", "turned_on.json"), ("disable", "turned_off.json")],
+)
 def test_switch_from_off(authorized_client, ocserv_off, endpoint, target_file):
     response = authorized_client.post(f"/services/ocserv/{endpoint}")
     assert response.status_code == 200
-    assert read_json(ocserv_off / "turned_off.json") == read_json(ocserv_off / target_file)
+    assert read_json(ocserv_off / "turned_off.json") == read_json(
+        ocserv_off / target_file
+    )
 
-@pytest.mark.parametrize("endpoint,target_file", [("enable", "turned_on.json"), ("disable", "turned_off.json")])
+
+@pytest.mark.parametrize(
+    "endpoint,target_file",
+    [("enable", "turned_on.json"), ("disable", "turned_off.json")],
+)
 def test_switch_from_on(authorized_client, ocserv_on, endpoint, target_file):
     response = authorized_client.post(f"/services/ocserv/{endpoint}")
     assert response.status_code == 200
     assert read_json(ocserv_on / "turned_on.json") == read_json(ocserv_on / target_file)
 
-@pytest.mark.parametrize("endpoint,target_file", [("enable", "turned_on.json"), ("disable", "turned_off.json")])
+
+@pytest.mark.parametrize(
+    "endpoint,target_file",
+    [("enable", "turned_on.json"), ("disable", "turned_off.json")],
+)
 def test_switch_twice(authorized_client, ocserv_off, endpoint, target_file):
     response = authorized_client.post(f"/services/ocserv/{endpoint}")
     assert response.status_code == 200
     response = authorized_client.post(f"/services/ocserv/{endpoint}")
     assert response.status_code == 200
-    assert read_json(ocserv_off / "turned_off.json") == read_json(ocserv_off / target_file)
+    assert read_json(ocserv_off / "turned_off.json") == read_json(
+        ocserv_off / target_file
+    )
 
-@pytest.mark.parametrize("endpoint,target_file", [("enable", "turned_on.json"), ("disable", "turned_off.json")])
-def test_on_attribute_deleted(authorized_client, ocserv_enable_undefined, endpoint, target_file):
+
+@pytest.mark.parametrize(
+    "endpoint,target_file",
+    [("enable", "turned_on.json"), ("disable", "turned_off.json")],
+)
+def test_on_attribute_deleted(
+    authorized_client, ocserv_enable_undefined, endpoint, target_file
+):
     response = authorized_client.post(f"/services/ocserv/{endpoint}")
     assert response.status_code == 200
-    assert read_json(ocserv_enable_undefined / "enable_undefined.json") == read_json(ocserv_enable_undefined / target_file)
+    assert read_json(ocserv_enable_undefined / "enable_undefined.json") == read_json(
+        ocserv_enable_undefined / target_file
+    )
 
-@pytest.mark.parametrize("endpoint,target_file", [("enable", "turned_on.json"), ("disable", "turned_off.json")])
-def test_on_ocserv_undefined(authorized_client, ocserv_undefined, endpoint, target_file):
+
+@pytest.mark.parametrize(
+    "endpoint,target_file",
+    [("enable", "turned_on.json"), ("disable", "turned_off.json")],
+)
+def test_on_ocserv_undefined(
+    authorized_client, ocserv_undefined, endpoint, target_file
+):
     response = authorized_client.post(f"/services/ocserv/{endpoint}")
     assert response.status_code == 200
-    assert read_json(ocserv_undefined / "undefined.json") == read_json(ocserv_undefined / target_file)
+    assert read_json(ocserv_undefined / "undefined.json") == read_json(
+        ocserv_undefined / target_file
+    )
diff --git a/tests/services/test_pleroma.py b/tests/services/test_pleroma.py
index 8b7a877..0d7f149 100644
--- a/tests/services/test_pleroma.py
+++ b/tests/services/test_pleroma.py
@@ -1,43 +1,54 @@
 import json
 import pytest
 
+
 def read_json(file_path):
     with open(file_path, "r") as f:
         return json.load(f)
 
+
 ###############################################################################
 
+
 @pytest.fixture
 def pleroma_off(mocker, datadir):
     mocker.patch("selfprivacy_api.utils.USERDATA_FILE", new=datadir / "turned_off.json")
     assert read_json(datadir / "turned_off.json")["pleroma"]["enable"] == False
     return datadir
 
+
 @pytest.fixture
 def pleroma_on(mocker, datadir):
     mocker.patch("selfprivacy_api.utils.USERDATA_FILE", new=datadir / "turned_on.json")
     assert read_json(datadir / "turned_on.json")["pleroma"]["enable"] == True
     return datadir
 
+
 @pytest.fixture
 def pleroma_enable_undefined(mocker, datadir):
-    mocker.patch("selfprivacy_api.utils.USERDATA_FILE", new=datadir / "enable_undefined.json")
+    mocker.patch(
+        "selfprivacy_api.utils.USERDATA_FILE", new=datadir / "enable_undefined.json"
+    )
     assert "enable" not in read_json(datadir / "enable_undefined.json")["pleroma"]
     return datadir
 
+
 @pytest.fixture
 def pleroma_undefined(mocker, datadir):
     mocker.patch("selfprivacy_api.utils.USERDATA_FILE", new=datadir / "undefined.json")
     assert "pleroma" not in read_json(datadir / "undefined.json")
     return datadir
 
+
 ###############################################################################
 
+
 @pytest.mark.parametrize("endpoint", ["enable", "disable"])
 def test_unauthorized(client, pleroma_off, endpoint):
     response = client.post(f"/services/pleroma/{endpoint}")
     assert response.status_code == 401
 
+
 @pytest.mark.parametrize("endpoint", ["enable", "disable"])
 def test_illegal_methods(authorized_client, pleroma_off, endpoint):
     response = authorized_client.get(f"/services/pleroma/{endpoint}")
@@ -47,34 +58,68 @@ def test_illegal_methods(authorized_client, pleroma_off, endpoint):
     response = authorized_client.delete(f"/services/pleroma/{endpoint}")
     assert response.status_code == 405
 
-@pytest.mark.parametrize("endpoint,target_file", [("enable", "turned_on.json"), ("disable", "turned_off.json")])
+
+@pytest.mark.parametrize(
+    "endpoint,target_file",
+    [("enable", "turned_on.json"), ("disable", "turned_off.json")],
+)
 def test_switch_from_off(authorized_client, pleroma_off, endpoint, target_file):
     response = authorized_client.post(f"/services/pleroma/{endpoint}")
     assert response.status_code == 200
-    assert read_json(pleroma_off / "turned_off.json") == read_json(pleroma_off / target_file)
+    assert read_json(pleroma_off / "turned_off.json") == read_json(
+        pleroma_off / target_file
+    )
 
-@pytest.mark.parametrize("endpoint,target_file", [("enable", "turned_on.json"), ("disable", "turned_off.json")])
+
+@pytest.mark.parametrize(
+    "endpoint,target_file",
+    [("enable", "turned_on.json"), ("disable", "turned_off.json")],
+)
 def test_switch_from_on(authorized_client, pleroma_on, endpoint, target_file):
     response = authorized_client.post(f"/services/pleroma/{endpoint}")
     assert response.status_code == 200
-    assert read_json(pleroma_on / "turned_on.json") == read_json(pleroma_on / target_file)
+    assert read_json(pleroma_on / "turned_on.json") == read_json(
+        pleroma_on / target_file
+    )
 
-@pytest.mark.parametrize("endpoint,target_file", [("enable", "turned_on.json"), ("disable", "turned_off.json")])
+
+@pytest.mark.parametrize(
+    "endpoint,target_file",
+    [("enable", "turned_on.json"), ("disable", "turned_off.json")],
+)
 def test_switch_twice(authorized_client, pleroma_off, endpoint, target_file):
     response = authorized_client.post(f"/services/pleroma/{endpoint}")
     assert response.status_code == 200
     response = authorized_client.post(f"/services/pleroma/{endpoint}")
     assert response.status_code == 200
-    assert read_json(pleroma_off / "turned_off.json") == read_json(pleroma_off / target_file)
+    assert read_json(pleroma_off / "turned_off.json") == read_json(
+        pleroma_off / target_file
+    )
 
-@pytest.mark.parametrize("endpoint,target_file", [("enable", "turned_on.json"), ("disable", "turned_off.json")])
-def test_on_attribute_deleted(authorized_client, pleroma_enable_undefined, endpoint, target_file):
+
+@pytest.mark.parametrize(
+    "endpoint,target_file",
+    [("enable", "turned_on.json"), ("disable", "turned_off.json")],
+)
+def test_on_attribute_deleted(
+    authorized_client, pleroma_enable_undefined, endpoint, target_file
+):
     response = authorized_client.post(f"/services/pleroma/{endpoint}")
     assert response.status_code == 200
-    assert read_json(pleroma_enable_undefined / "enable_undefined.json") == read_json(pleroma_enable_undefined / target_file)
+    assert read_json(pleroma_enable_undefined / "enable_undefined.json") == read_json(
+        pleroma_enable_undefined / target_file
+    )
 
-@pytest.mark.parametrize("endpoint,target_file", [("enable", "turned_on.json"), ("disable", "turned_off.json")])
-def test_on_pleroma_undefined(authorized_client, pleroma_undefined, endpoint, target_file):
+
+@pytest.mark.parametrize(
+    "endpoint,target_file",
+    [("enable", "turned_on.json"), ("disable", "turned_off.json")],
+)
+def test_on_pleroma_undefined(
+    authorized_client, pleroma_undefined, endpoint, target_file
+):
     response = authorized_client.post(f"/services/pleroma/{endpoint}")
     assert response.status_code == 200
-    assert read_json(pleroma_undefined / "undefined.json") == read_json(pleroma_undefined / target_file)
+    assert read_json(pleroma_undefined / "undefined.json") == read_json(
+        pleroma_undefined / target_file
+    )
diff --git a/tests/services/test_services.py b/tests/services/test_services.py
index 0516c2d..859da5a 100644
--- a/tests/services/test_services.py
+++ b/tests/services/test_services.py
@@ -7,6 +7,7 @@ def read_json(file_path):
     with open(file_path, "r", encoding="utf-8") as f:
         return json.load(f)
 
+
 def call_args_asserts(mocked_object):
     assert mocked_object.call_count == 8
     assert mocked_object.call_args_list[0][0][0] == [
@@ -50,6 +51,7 @@ def call_args_asserts(mocked_object):
         "pleroma.service",
     ]
 
+
 class ProcessMock:
     """Mock subprocess.Popen"""
 
diff --git a/tests/services/test_ssh.py b/tests/services/test_ssh.py
index c140123..7233a53 100644
--- a/tests/services/test_ssh.py
+++ b/tests/services/test_ssh.py
@@ -172,91 +172,143 @@ def test_set_settings_undefined(authorized_client, undefined_settings, settings)
     if "passwordAuthentication" in settings:
         assert data["passwordAuthentication"] == settings["passwordAuthentication"]
 
+
 def test_add_root_key(authorized_client, ssh_on):
-    response = authorized_client.put(f"/services/ssh/key/send", json={"public_key": "ssh-rsa KEY test@pc"})
+    response = authorized_client.put(
+        f"/services/ssh/key/send", json={"public_key": "ssh-rsa KEY test@pc"}
+    )
     assert response.status_code == 201
     assert read_json(ssh_on / "turned_on.json")["ssh"]["rootKeys"] == [
         "ssh-rsa KEY test@pc",
     ]
 
+
 def test_add_root_key_one_more(authorized_client, root_and_admin_have_keys):
-    response = authorized_client.put(f"/services/ssh/key/send", json={"public_key": "ssh-rsa KEY test@pc"})
+    response = authorized_client.put(
+        f"/services/ssh/key/send", json={"public_key": "ssh-rsa KEY test@pc"}
+    )
     assert response.status_code == 201
-    assert read_json(root_and_admin_have_keys / "root_and_admin_have_keys.json")["ssh"]["rootKeys"] == [
+    assert read_json(root_and_admin_have_keys / "root_and_admin_have_keys.json")["ssh"][
+        "rootKeys"
+    ] == [
         "ssh-ed25519 KEY test@pc",
         "ssh-rsa KEY test@pc",
     ]
 
+
 def test_add_existing_root_key(authorized_client, root_and_admin_have_keys):
-    response = authorized_client.put(f"/services/ssh/key/send", json={"public_key": "ssh-ed25519 KEY test@pc"})
+    response = authorized_client.put(
+        f"/services/ssh/key/send", json={"public_key": "ssh-ed25519 KEY test@pc"}
+    )
     assert response.status_code == 409
-    assert read_json(root_and_admin_have_keys / "root_and_admin_have_keys.json")["ssh"]["rootKeys"] == [
+    assert read_json(root_and_admin_have_keys / "root_and_admin_have_keys.json")["ssh"][
+        "rootKeys"
+    ] == [
         "ssh-ed25519 KEY test@pc",
     ]
 
+
 def test_add_invalid_root_key(authorized_client, ssh_on):
-    response = authorized_client.put(f"/services/ssh/key/send", json={"public_key": "INVALID KEY test@pc"})
+    response = authorized_client.put(
+        f"/services/ssh/key/send", json={"public_key": "INVALID KEY test@pc"}
+    )
     assert response.status_code == 400
 
+
 def test_add_root_key_via_wrong_endpoint(authorized_client, ssh_on):
-    response = authorized_client.post(f"/services/ssh/keys/root", json={"public_key": "ssh-rsa KEY test@pc"})
+    response = authorized_client.post(
+        f"/services/ssh/keys/root", json={"public_key": "ssh-rsa KEY test@pc"}
+    )
     assert response.status_code == 400
 
+
 def test_get_root_key(authorized_client, root_and_admin_have_keys):
     response = authorized_client.get(f"/services/ssh/keys/root")
     assert response.status_code == 200
     assert response.json == ["ssh-ed25519 KEY test@pc"]
 
+
 def test_get_root_key_when_none(authorized_client, ssh_on):
     response = authorized_client.get(f"/services/ssh/keys/root")
     assert response.status_code == 200
     assert response.json == []
 
+
 def test_delete_root_key(authorized_client, root_and_admin_have_keys):
-    response = authorized_client.delete(f"/services/ssh/keys/root", json={"public_key": "ssh-ed25519 KEY test@pc"})
+    response = authorized_client.delete(
+        f"/services/ssh/keys/root", json={"public_key": "ssh-ed25519 KEY test@pc"}
+    )
     assert response.status_code == 200
-    assert read_json(root_and_admin_have_keys / "root_and_admin_have_keys.json")["ssh"]["rootKeys"] == []
+    assert (
+        read_json(root_and_admin_have_keys / "root_and_admin_have_keys.json")["ssh"][
+            "rootKeys"
+        ]
+        == []
+    )
+
 
 def test_delete_root_nonexistent_key(authorized_client, root_and_admin_have_keys):
-    response = authorized_client.delete(f"/services/ssh/keys/root", json={"public_key": "ssh-rsa KEY test@pc"})
+    response = authorized_client.delete(
+        f"/services/ssh/keys/root", json={"public_key": "ssh-rsa KEY test@pc"}
+    )
     assert response.status_code == 404
-    assert read_json(root_and_admin_have_keys / "root_and_admin_have_keys.json")["ssh"]["rootKeys"] == [
+    assert read_json(root_and_admin_have_keys / "root_and_admin_have_keys.json")["ssh"][
+        "rootKeys"
+    ] == [
         "ssh-ed25519 KEY test@pc",
     ]
 
+
 def test_get_admin_key(authorized_client, root_and_admin_have_keys):
     response = authorized_client.get(f"/services/ssh/keys/tester")
     assert response.status_code == 200
     assert response.json == ["ssh-rsa KEY test@pc"]
 
+
 def test_get_admin_key_when_none(authorized_client, ssh_on):
     response = authorized_client.get(f"/services/ssh/keys/tester")
     assert response.status_code == 200
     assert response.json == []
 
+
 def test_delete_admin_key(authorized_client, root_and_admin_have_keys):
-    response = authorized_client.delete(f"/services/ssh/keys/tester", json={"public_key": "ssh-rsa KEY test@pc"})
+    response = authorized_client.delete(
+        f"/services/ssh/keys/tester", json={"public_key": "ssh-rsa KEY test@pc"}
+    )
     assert response.status_code == 200
-    assert read_json(root_and_admin_have_keys / "root_and_admin_have_keys.json")["sshKeys"] == []
+    assert (
+        read_json(root_and_admin_have_keys / "root_and_admin_have_keys.json")["sshKeys"]
+        == []
+    )
+
 
 def test_add_admin_key(authorized_client, ssh_on):
-    response = authorized_client.post(f"/services/ssh/keys/tester", json={"public_key": "ssh-rsa KEY test@pc"})
+    response = authorized_client.post(
+        f"/services/ssh/keys/tester", json={"public_key": "ssh-rsa KEY test@pc"}
+    )
     assert response.status_code == 201
     assert read_json(ssh_on / "turned_on.json")["sshKeys"] == [
         "ssh-rsa KEY test@pc",
     ]
 
+
 def test_add_admin_key_one_more(authorized_client, root_and_admin_have_keys):
-    response = authorized_client.post(f"/services/ssh/keys/tester", json={"public_key": "ssh-rsa KEY_2 test@pc"})
+    response = authorized_client.post(
+        f"/services/ssh/keys/tester", json={"public_key": "ssh-rsa KEY_2 test@pc"}
+    )
     assert response.status_code == 201
-    assert read_json(root_and_admin_have_keys / "root_and_admin_have_keys.json")["sshKeys"] == [
-        "ssh-rsa KEY test@pc",
-        "ssh-rsa KEY_2 test@pc"
-    ]
+    assert read_json(root_and_admin_have_keys / "root_and_admin_have_keys.json")[
+        "sshKeys"
+    ] == ["ssh-rsa KEY test@pc", "ssh-rsa KEY_2 test@pc"]
+
 
 def test_add_existing_admin_key(authorized_client, root_and_admin_have_keys):
-    response = authorized_client.post(f"/services/ssh/keys/tester", json={"public_key": "ssh-rsa KEY test@pc"})
+    response = authorized_client.post(
+        f"/services/ssh/keys/tester", json={"public_key": "ssh-rsa KEY test@pc"}
+    )
     assert response.status_code == 409
-    assert read_json(root_and_admin_have_keys / "root_and_admin_have_keys.json")["sshKeys"] == [
+    assert read_json(root_and_admin_have_keys / "root_and_admin_have_keys.json")[
+        "sshKeys"
+    ] == [
         "ssh-rsa KEY test@pc",
-    ]
\ No newline at end of file
+    ]