Refs #36580 -- Added coverage for excluding ForeignObject from constraint validation.

tests/foreign_object/models/__init__.py

@@ -1,5 +1,5 @@
 from .article import Article, ArticleIdea, ArticleTag, ArticleTranslation, NewsArticle
-from .customers import Address, Contact, Customer
+from .customers import Address, Contact, Customer, CustomerTab
 from .empty_join import SlugPage
 from .person import Country, Friendship, Group, Membership, Person
 
@@ -12,6 +12,7 @@ __all__ = [
     "Contact",
     "Country",
     "Customer",
+    "CustomerTab",
     "Friendship",
     "Group",
     "Membership",

tests/foreign_object/models/customers.py

@@ -39,3 +39,22 @@ class Contact(models.Model):
         to_fields=["customer_id", "company"],
         from_fields=["customer_code", "company_code"],
     )
+
+
+class CustomerTab(models.Model):
+    customer_id = models.IntegerField()
+    customer = models.ForeignObject(
+        Customer,
+        from_fields=["customer_id"],
+        to_fields=["id"],
+        on_delete=models.CASCADE,
+    )
+
+    class Meta:
+        required_db_features = {"supports_table_check_constraints"}
+        constraints = [
+            models.CheckConstraint(
+                condition=models.Q(customer__lt=1000),
+                name="customer_id_limit",
+            ),
+        ]

tests/foreign_object/tests.py

@@ -15,6 +15,7 @@ from .models import (
     ArticleTag,
     ArticleTranslation,
     Country,
+    CustomerTab,
     Friendship,
     Group,
     Membership,
@@ -767,3 +768,10 @@ class TestCachedPathInfo(TestCase):
         foreign_object_restored = pickle.loads(pickle.dumps(foreign_object))
         self.assertIn("path_infos", foreign_object_restored.__dict__)
         self.assertIn("reverse_path_infos", foreign_object_restored.__dict__)
+
+
+class ForeignObjectModelValidationTests(TestCase):
+    @skipUnlessDBFeature("supports_table_check_constraints")
+    def test_validate_constraints_excluding_foreign_object(self):
+        customer_tab = CustomerTab(customer_id=150)
+        customer_tab.validate_constraints(exclude={"customer"})