[5.1.x] Added missing skips in constraint tests.

Backport of b6ad8b687adf011245270df17a38c1a42792e3d7 from main.

1 files changed, 2 insertions, 0 deletions

diff --git a/tests/constraints/tests.py b/tests/constraints/tests.py
index fd68c5156d..32f98a5529 100644
--- a/tests/constraints/tests.py
+++ b/tests/constraints/tests.py
@@ -896,6 +896,7 @@ class UniqueConstraintTests(TestCase):
                 ChildUniqueConstraintProduct(name=self.p1.name, color=self.p1.color),
             )
 
+    @skipUnlessDBFeature("supports_table_check_constraints")
     def test_validate_fields_unattached(self):
         Product.objects.create(price=42)
         constraint = models.UniqueConstraint(fields=["price"], name="uniq_prices")
@@ -1070,6 +1071,7 @@ class UniqueConstraintTests(TestCase):
         is_not_null_constraint.validate(Product, Product(price=4, discounted_price=3))
         is_not_null_constraint.validate(Product, Product(price=2, discounted_price=1))
 
+    @skipUnlessDBFeature("supports_table_check_constraints")
     def test_validate_nulls_distinct_expressions(self):
         Product.objects.create(price=42)
         constraint = models.UniqueConstraint(