Add comprehensive tests for Parks API and models

- Implemented extensive test cases for the Parks API, covering endpoints for listing, retrieving, creating, updating, and deleting parks.
- Added tests for filtering, searching, and ordering parks in the API.
- Created tests for error handling in the API, including malformed JSON and unsupported methods.
- Developed model tests for Park, ParkArea, Company, and ParkReview models, ensuring validation and constraints are enforced.
- Introduced utility mixins for API and model testing to streamline assertions and enhance test readability.
- Included integration tests to validate complete workflows involving park creation, retrieval, updating, and deletion.

moderation/models.py

@@ -165,6 +165,8 @@ class EditSubmission(TrackedModel):
             if self.submission_type == "CREATE":
                 # Create new object
                 obj = model_class(**prepared_data)
+                # CRITICAL STYLEGUIDE FIX: Call full_clean before save
+                obj.full_clean()
                 obj.save()
                 # Update object_id after creation
                 self.object_id = getattr(obj, "id", None)
@@ -174,8 +176,12 @@ class EditSubmission(TrackedModel):
                     raise ValueError("Content object not found")
                 for field, value in prepared_data.items():
                     setattr(obj, field, value)
+                # CRITICAL STYLEGUIDE FIX: Call full_clean before save
+                obj.full_clean()
                 obj.save()
 
+            # CRITICAL STYLEGUIDE FIX: Call full_clean before save
+            self.full_clean()
             self.save()
             return obj
         except Exception as e: