From e0ac72fe80a806421dcbbbac22e483b27d2ede7b Mon Sep 17 00:00:00 2001
From: David Sanders <shang.xiao.sanders@gmail.com>
Date: Tue, 9 Aug 2022 20:02:07 +0200
Subject: [PATCH] Refs #33905 -- Added test for CheckConstraint() validation
 with ArrayField and __contains.

---
 tests/postgres_tests/test_constraints.py | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/tests/postgres_tests/test_constraints.py b/tests/postgres_tests/test_constraints.py
index a33c485a36..b3822e5805 100644
--- a/tests/postgres_tests/test_constraints.py
+++ b/tests/postgres_tests/test_constraints.py
@@ -65,6 +65,16 @@ class SchemaTests(PostgreSQLTestCase):
             RangesModel.objects.create(ints=(20, 50))
         RangesModel.objects.create(ints=(10, 30))
 
+    def test_check_constraint_array_contains(self):
+        constraint = CheckConstraint(
+            check=Q(field__contains=[1]),
+            name="array_contains",
+        )
+        msg = f"Constraint “{constraint.name}” is violated."
+        with self.assertRaisesMessage(ValidationError, msg):
+            constraint.validate(IntegerArrayModel, IntegerArrayModel())
+        constraint.validate(IntegerArrayModel, IntegerArrayModel(field=[1]))
+
     def test_check_constraint_daterange_contains(self):
         constraint_name = "dates_contains"
         self.assertNotIn(