Add tests for admin. (#308)

requirements/requirements-test.in

@@ -6,3 +6,4 @@ pytest-django
 pytest-mock
 pytest-playwright
 factory_boy
+unittest_parametrize

requirements/requirements-test.txt

@@ -282,10 +282,13 @@ typing-extensions==4.6.3
     #   azure-core
     #   azure-storage-blob
     #   pyee
+    #   unittest-parametrize
 tzdata==2024.1
     # via
     #   -r requirements/requirements.txt
     #   django
+unittest-parametrize==1.4.0
+    # via -r requirements/requirements-test.in
 urllib3==1.26.18
     # via
     #   -r requirements/requirements.txt

tests/test_admin.py

@@ -0,0 +1,62 @@
+from __future__ import annotations
+
+from http import HTTPStatus
+
+from django.contrib.admin.sites import AdminSite
+from django.contrib.admin.sites import all_sites
+from django.db.models import Model
+from django.test import TestCase
+from django.urls import reverse
+from unittest_parametrize import param
+from unittest_parametrize import parametrize
+from unittest_parametrize import ParametrizedTestCase
+
+from accounts.models import CustomUser
+
+
+each_model_admin = parametrize(
+    "site,model,model_admin",
+    [
+        param(
+            site,
+            model,
+            model_admin,
+            id=f"{site.name}_{str(model_admin).replace('.', '_')}",
+        )
+        for site in all_sites
+        for model, model_admin in site._registry.items()
+    ],
+)
+
+
+class ModelAdminTests(ParametrizedTestCase, TestCase):
+    user: CustomUser
+
+    @classmethod
+    def setUpTestData(cls):
+        cls.user = CustomUser.objects.create_superuser(
+            username="admin", email="[email protected]", password="test"
+        )
+
+    def setUp(self):
+        self.client.force_login(self.user)
+
+    def make_url(self, site: AdminSite, model: type[Model], page: str) -> str:
+        return reverse(
+            f"{site.name}:{model._meta.app_label}_{model._meta.model_name}_{page}"
+        )
+
+    @each_model_admin
+    def test_changelist(self, site, model, model_admin):
+        url = self.make_url(site, model, "changelist")
+        response = self.client.get(url, {"q": "example.com"})
+        assert response.status_code == HTTPStatus.OK
+
+    @each_model_admin
+    def test_add(self, site, model, model_admin):
+        url = self.make_url(site, model, "add")
+        response = self.client.get(url)
+        assert response.status_code in (
+            HTTPStatus.OK,
+            HTTPStatus.FORBIDDEN,  # some admin classes blanket disallow "add"
+        )