Refs #30581 -- Moved CheckConstraint tests for conditional expressions to migrations.test_operations.

This allows avoiding warning in tests about using RawSQL in
CheckConstraints.

tests/migrations/test_operations.py

@@ -468,6 +468,48 @@ class OperationTests(OperationTestBase):
         self.assertEqual(definition[1], [])
         self.assertEqual(definition[2]["options"]["constraints"], [check_constraint])
 
+    @skipUnlessDBFeature("supports_table_check_constraints")
+    def test_create_model_with_boolean_expression_in_check_constraint(self):
+        app_label = "test_crmobechc"
+        rawsql_constraint = models.CheckConstraint(
+            check=models.expressions.RawSQL(
+                "price < %s", (1000,), output_field=models.BooleanField()
+            ),
+            name=f"{app_label}_price_lt_1000_raw",
+        )
+        wrapper_constraint = models.CheckConstraint(
+            check=models.expressions.ExpressionWrapper(
+                models.Q(price__gt=500) | models.Q(price__lt=500),
+                output_field=models.BooleanField(),
+            ),
+            name=f"{app_label}_price_neq_500_wrap",
+        )
+        operation = migrations.CreateModel(
+            "Product",
+            [
+                ("id", models.AutoField(primary_key=True)),
+                ("price", models.IntegerField(null=True)),
+            ],
+            options={"constraints": [rawsql_constraint, wrapper_constraint]},
+        )
+
+        project_state = ProjectState()
+        new_state = project_state.clone()
+        operation.state_forwards(app_label, new_state)
+        # Add table.
+        self.assertTableNotExists(app_label)
+        with connection.schema_editor() as editor:
+            operation.database_forwards(app_label, editor, project_state, new_state)
+        self.assertTableExists(f"{app_label}_product")
+        insert_sql = f"INSERT INTO {app_label}_product (id, price) VALUES (%d, %d)"
+        with connection.cursor() as cursor:
+            with self.assertRaises(IntegrityError):
+                cursor.execute(insert_sql % (1, 1000))
+            cursor.execute(insert_sql % (1, 999))
+            with self.assertRaises(IntegrityError):
+                cursor.execute(insert_sql % (2, 500))
+            cursor.execute(insert_sql % (2, 499))
+
     def test_create_model_with_partial_unique_constraint(self):
         partial_unique_constraint = models.UniqueConstraint(
             fields=["pink"],