diff --git a/apps/permission/backends.py b/apps/permission/backends.py
index 37134713..ec136e9e 100644
--- a/apps/permission/backends.py
+++ b/apps/permission/backends.py
@@ -26,7 +26,7 @@ class PermissionBackend(ModelBackend):
 
     @staticmethod
     @memoize
-    def get_raw_permissions(request, t):
+    def get_raw_permissions(request, t):  # noqa: C901
         """
         Query permissions of a certain type for a user, then memoize it.
         :param request: The current request
@@ -42,7 +42,7 @@ class PermissionBackend(ModelBackend):
                 if 'mask' in request.GET:
                     try:
                         rank = int(request.GET['mask'])
-                    except:
+                    except ValueError:
                         rank = 42
                     query &= Q(mask__rank__lte=rank)
                 for scope in request.auth.scope.split(' '):
diff --git a/apps/permission/scopes.py b/apps/permission/scopes.py
index d05bf297..93b7a88b 100644
--- a/apps/permission/scopes.py
+++ b/apps/permission/scopes.py
@@ -12,6 +12,7 @@ from .models import Permission
 
 from django.utils.translation import gettext_lazy as _
 
+
 class PermissionScopes(BaseScopes):
     """
     An OAuth2 scope is defined by a permission object and a club.
@@ -83,8 +84,12 @@ class PermissionOAuth2Validator(OAuth2Validator):
 
         valid_scopes = set()
 
+        # simple patch for have functionnal ROPB flow
+        # TODO rewrite
+        r = get_current_request()
+        r.user = request.user
         for t in Permission.PERMISSION_TYPES:
-            for p in PermissionBackend.get_raw_permissions(get_current_request(), t[0]):
+            for p in PermissionBackend.get_raw_permissions(r, t[0]):
                 scope = f"{p.id}_{p.membership.club.id}"
                 if scope in scopes:
                     valid_scopes.add(scope)
diff --git a/apps/permission/tests/test_oauth2.py b/apps/permission/tests/test_oauth2_access.py
similarity index 72%
rename from apps/permission/tests/test_oauth2.py
rename to apps/permission/tests/test_oauth2_access.py
index 579dc5c8..ebbbc7d7 100644
--- a/apps/permission/tests/test_oauth2.py
+++ b/apps/permission/tests/test_oauth2_access.py
@@ -21,6 +21,7 @@ class OAuth2TestCase(TestCase):
     def setUp(self):
         self.user = User.objects.create(
             username="toto",
+            password="toto1234",
         )
         self.application = Application.objects.create(
             name="Test",
@@ -92,3 +93,39 @@ class OAuth2TestCase(TestCase):
         self.assertEqual(resp.status_code, 200)
         self.assertIn(self.application, resp.context['scopes'])
         self.assertIn('1_1', resp.context['scopes'][self.application])  # Now the user has this permission
+
+    def test_oidc(self):
+        """
+        Ensure OIDC work
+        """
+        # Create access token that has access to our own user detail
+        token = AccessToken.objects.create(
+            user=self.user,
+            application=self.application,
+            scope="openid",
+            token=get_random_string(64),
+            expires=timezone.now() + timedelta(days=365),
+        )
+
+        # No access without token
+        resp = self.client.get('/o/userinfo/')  # userinfo endpoint
+        self.assertEqual(resp.status_code, 401)
+
+        # Valid token
+        resp = self.client.get('/o/userinfo/', **{'Authorization': f'Bearer {token.token}'})
+        self.assertEqual(resp.status_code, 200)
+
+        # Create membership to test api
+        NoteUser.objects.create(user=self.user)
+        membership = Membership.objects.create(user=self.user, club_id=1)
+        membership.roles.add(Role.objects.get(name="Adhérent⋅e BDE"))
+        membership.save()
+
+        # Token can always be use to see yourself
+        resp = self.client.get('/api/me/',
+                               **{'Authorization': f'Bearer {token.token}'})
+
+        # Token is not granted to see other api
+        resp = self.client.get(f'/api/user/{self.user.pk}/',
+                               **{'Authorization': f'Bearer {token.token}'})
+        self.assertEqual(resp.status_code, 404)
diff --git a/apps/permission/tests/test_oauth2_flow.py b/apps/permission/tests/test_oauth2_flow.py
new file mode 100644
index 00000000..685da780
--- /dev/null
+++ b/apps/permission/tests/test_oauth2_flow.py
@@ -0,0 +1,115 @@
+# Copyright (C) 2018-2025 by BDE ENS Paris-Saclay
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+import base64
+
+from django.contrib.auth.models import User
+from django.test import TestCase
+from member.models import Membership, Club
+from note.models import NoteUser
+from oauth2_provider.models import Application
+
+from ..models import Role, Permission
+
+
+class OAuth2TestCase(TestCase):
+    fixtures = ('initial', )
+
+    def setUp(self):
+        self.user = User.objects.create(
+            username="toto",
+            password="toto1234",
+        )
+
+        NoteUser.objects.create(user=self.user)
+        membership = Membership.objects.create(user=self.user, club_id=1)
+        membership.roles.add(Role.objects.get(name="Adhérent⋅e BDE"))
+        membership.save()
+
+        bde = Club.objects.get(name="BDE")
+        view_user_perm = Permission.objects.get(pk=1)  # View own user detail
+
+        self.base_scope = f'{view_user_perm.pk}_{bde.pk}'
+
+    def test_oauth2_authorization_code_flow(self):
+        """
+        Ensure OAuth2 Authorization Code Flow work
+        """
+        pass
+
+    def test_oauth2_implicit_flow(self):
+        """
+        Ensure OAuth2 Implicit Flow work
+        """
+        pass
+
+    def test_oauth2_resource_owner_password_credentials_flow(self):
+        """
+        Ensure OAuth2 Resource Owner Password Credentials Flow work
+        """
+        pass
+
+    def test_oauth2_client_credentials(self):
+        """
+        Ensure OAuth2 Client Credentials work
+        """
+        app = Application.objects.create(
+            name="Test credentials",
+            client_type=Application.CLIENT_CONFIDENTIAL,
+            authorization_grant_type=Application.GRANT_CLIENT_CREDENTIALS,
+            user=self.user,
+            hash_client_secret=False,
+            algorithm=Application.NO_ALGORITHM,
+        )
+
+        # No token without credential
+        resp = self.client.post('/o/token/',
+                                data={"grant_type": "client_credentials"},
+                                **{"Content-Type": 'application/x-www-form-urlencoded'}
+                                )
+
+        self.assertEqual(resp.status_code, 401)
+
+        # Access with credential
+        credential = base64.b64encode(f'{app.client_id}:{app.client_secret}'.encode('utf-8')).decode()
+
+        resp = self.client.post('/o/token/',
+                                data={"grant_type": "client_credentials"},
+                                **{'HTTP_Authorization': f'Basic {credential}',
+                                   "Content-Type": 'application/x-www-form-urlencoded'}
+                                )
+
+        self.assertEqual(resp.status_code, 200)
+
+        token = resp.json()['access_token']
+
+        # Token is valid but has no right
+        resp = self.client.get('/api/user/{self.user.pk}',
+                               **{'Authorization': f'Bearer {token}'}
+                               )
+
+        self.assertEqual(resp.status_code, 403)
+
+        # RFC6749 4.4.2 allows use of scope in client credential flow
+        resp = self.client.post('/o/token/',
+                                data={"grant_type": "client_credentials",
+                                      "scope": self.base_scope},
+                                **{'http_Authorization': f'Basic {credential}',
+                                   "Content-Type": 'application/x-www-form-urlencoded'}
+                                )
+
+        self.assertEqual(resp.status_code, 200)
+
+        token = resp.json()['access_token']
+
+        # Now app can see his creator
+        resp = self.client.post(f'/api/user/{self.user.pk}/',
+                                **{'Authorization': f'Bearer {token}'})
+
+        self.assertEqual(resp.status_code, 200)
+
+    def test_oidc_flow(self):
+        """
+        Ensure OIDC Flow work
+        """
+        pass