Add simplest tests for admin rendering

django_pydantic_field/v2/fields.py

@@ -171,9 +171,11 @@ def get_transform(self, lookup_name: str):
             transform = SchemaKeyTransformAdapter(transform)
         return transform
 
-    def get_default(self) -> types.ST:
+    def get_default(self) -> ty.Any:
         default_value = super().get_default()
-        return self.adapter.validate_python(default_value)
+        if self.has_default():
+            return self.adapter.validate_python(default_value)
+        return default_value
 
     def formfield(self, **kwargs):
         field_kwargs = dict(

tests/settings/django_test_settings.py

@@ -4,6 +4,7 @@
 SECRET_KEY = "1"
 SITE_ID = 1
 BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+STATIC_URL = "/static/"
 
 INSTALLED_APPS = [
     "django.contrib.contenttypes",

tests/test_app/migrations/0003_samplemodelwithroot.py

@@ -0,0 +1,31 @@
+# Generated by Django 5.0.1 on 2024-03-11 22:29
+
+import django.core.serializers.json
+import django_pydantic_field.fields
+import tests.test_app.models
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("test_app", "0002_examplemodel"),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name="SampleModelWithRoot",
+            fields=[
+                ("id", models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name="ID")),
+                (
+                    "root_field",
+                    django_pydantic_field.fields.PydanticSchemaField(
+                        config=None,
+                        default=list,
+                        encoder=django.core.serializers.json.DjangoJSONEncoder,
+                        schema=tests.test_app.models.RootSchema,
+                    ),
+                ),
+            ],
+        ),
+    ]

tests/test_app/models.py

@@ -41,14 +41,13 @@ class ExampleModel(models.Model):
 
 
 if PYDANTIC_V2:
-    class RootModel(pydantic.RootModel):
+    class RootSchema(pydantic.RootModel):
         root: t.List[int]
 
 else:
-    class RootModel(pydantic.BaseModel):
+    class RootSchema(pydantic.BaseModel):
         __root__: t.List[int]
 
 
 class SampleModelWithRoot(models.Model):
-    class Meta:
-        managed = False
+    root_field = SchemaField(schema=RootSchema, default=list)

tests/test_model_admin.py

@@ -1,8 +1,45 @@
+from django.middleware.csrf import CsrfViewMiddleware
 import pytest
 
+from django.contrib.auth.models import AnonymousUser
+from django.contrib.admin import site
 
-def test_model_admin_not_failing():
-    try:
-        from .test_app import admin
-    except:
-        pytest.fail("Django admin handlers should not fail")
+from .test_app import admin, models
+
+pytestmark = [
+    pytest.mark.django_db(),
+]
+
+all_admins = {
+    # This model cannot be instantiated without reasonable defaults
+    # models.SampleModel: admin.SampleModelAdmin,
+    #
+    models.SampleForwardRefModel: admin.SampleForwardRefModelAdmin,
+    models.SampleModelWithRoot: admin.SampleModelWithRootAdmin,
+    models.ExampleModel: admin.ExampleModelAdmin
+}
+
+
+@pytest.fixture
+def user():
+    return AnonymousUser()
+
+
+def patch_model_admin(admin_view, monkeypatch):
+    monkeypatch.setattr(CsrfViewMiddleware, "process_view", lambda self, req, *a, **kw: self._accept(req))
+    monkeypatch.setattr(admin_view, "has_view_permission", lambda self, *args: True)
+    monkeypatch.setattr(admin_view, "has_view_or_change_permission", lambda self, *args: True)
+    monkeypatch.setattr(admin_view, "has_add_permission", lambda self, *args: True)
+    monkeypatch.setattr(admin_view, "has_change_permission", lambda self, *args: True)
+    monkeypatch.setattr(admin_view, "has_delete_permission", lambda self, *args: True)
+
+
+@pytest.mark.parametrize("model, admin_view", all_admins.items())
+def test_model_admin_view_not_failing(model, admin_view, rf, user, monkeypatch):
+    patch_model_admin(admin_view, monkeypatch)
+
+    request = rf.get("/")
+    request.user = user
+
+    response = admin_view(model, site).changeform_view(request)
+    assert response.status_code == 200