[#2932] Skip KVK branch selection if vestigingsnummer already in session

src/open_inwoner/accounts/tests/test_oidc_views.py

@@ -2,6 +2,7 @@
 from typing import Literal
 from unittest.mock import patch
 
+from django.conf import settings
 from django.contrib.auth import get_user_model
 from django.core.exceptions import ValidationError
 from django.test import TestCase, modify_settings, override_settings
@@ -1828,3 +1829,69 @@ def test_redirect_after_login_no_registration_and_no_branch_selection(
         profile_response = self.app.get(profile_response.url)
 
         self.assertEqual(profile_response.status_code, 200)
+
+    @patch("open_inwoner.kvk.client.KvKClient.get_all_company_branches")
+    @patch("open_inwoner.utils.context_processors.SiteConfiguration")
+    @patch("mozilla_django_oidc_db.backends.OIDCAuthenticationBackend.get_userinfo")
+    @patch("mozilla_django_oidc_db.backends.OIDCAuthenticationBackend.store_tokens")
+    @patch("mozilla_django_oidc_db.backends.OIDCAuthenticationBackend.verify_token")
+    @patch("mozilla_django_oidc_db.backends.OIDCAuthenticationBackend.get_token")
+    @patch(
+        "open_inwoner.accounts.models.OpenIDEHerkenningConfig.get_solo",
+        return_value=OpenIDEHerkenningConfig(
+            id=1,
+            enabled=True,
+            legal_subject_claim=["kvk"],
+            oidc_op_authorization_endpoint="http://idp.local/auth",
+        ),
+    )
+    def test_redirect_after_login_branch_already_selected(
+        self,
+        mock_get_solo,
+        mock_get_token,
+        mock_verify_token,
+        mock_store_tokens,
+        mock_get_userinfo,
+        mock_siteconfig,
+        mock_kvk,
+    ):
+        """
+        KVK branch selection should be skipped if KVK_BRANCH_SESSION_VARIABLE is present in session
+        """
+        user = eHerkenningUserFactory.create(kvk="12345678", rsin="123456789")
+        mock_get_userinfo.return_value = {
+            "sub": "some_username",
+            "kvk": "12345678",
+        }
+        mock_siteconfig.return_value = SiteConfiguration(id=1, eherkenning_enabled=True)
+        mock_kvk.return_value = [
+            {"kvkNummer": "12345678"},
+            {"kvkNummer": "87654321"},
+        ]
+
+        # initialize session with request
+        self.app.get("/")
+        session = self.app.session
+        session[KVK_BRANCH_SESSION_VARIABLE] = "1234"
+        session.save()
+        self.app.set_cookie(settings.SESSION_COOKIE_NAME, session.session_key)
+
+        self.assertEqual(User.objects.count(), 1)
+
+        redirect_url = reverse("profile:detail")
+
+        callback_response = perform_oidc_login(
+            self.app, "eherkenning", redirect_url=redirect_url
+        )
+
+        user = User.objects.get()
+
+        self.assertEqual(user.pk, int(self.app.session.get("_auth_user_id")))
+        self.assertEqual(user.kvk, "12345678")
+
+        self.assertRedirects(
+            callback_response, reverse("profile:detail"), fetch_redirect_response=False
+        )
+
+        response = self.app.get(callback_response.url)
+        self.assertEqual(response.status_code, 200)

src/open_inwoner/kvk/tests/test_views.py

@@ -1,5 +1,6 @@
 from unittest.mock import patch
 
+from django.conf import settings
 from django.test import TestCase
 from django.urls import reverse, reverse_lazy
 
@@ -183,6 +184,24 @@ def test_get_branches_page_one_branch_found_sets_branch_check_done(
         # Following redirect should not result in endless redirect
         self.assertEqual(response.status_code, 200)
 
+    def test_get_branches_page_skips_if_vestigingsnummer_present(self):
+        session = self.client.session
+        session[KVK_BRANCH_SESSION_VARIABLE] = "12345678"
+        session.save()
+
+        self.client.force_login(user=self.user)
+
+        response = self.client.get(self.url)
+
+        self.assertEqual(response.status_code, 302)
+        self.assertEqual(response.url, reverse("pages-root"))
+        self.assertEqual(kvk_branch_selected_done(self.client.session), True)
+
+        response = self.client.get(response.url)
+
+        # # Following redirect should not result in endless redirect
+        self.assertEqual(response.status_code, 200)
+
     @patch("open_inwoner.kvk.client.KvKClient.get_all_company_branches")
     @patch(
         "open_inwoner.kvk.models.KvKConfig.get_solo",