From 3dc9f3ac6960c83cd32058677eb0ddb5a5e5da43 Mon Sep 17 00:00:00 2001
From: Ion Alberdi <ion.alberdi@pricemoov.com>
Date: Sun, 9 Oct 2022 11:01:14 +0200
Subject: Fixed #34080 -- Fixed __exact lookup when nested arrays contain only
 NULL values.

Thanks jerch and David Sanders for reviews.
---
 tests/postgres_tests/test_array.py | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

(limited to 'tests/postgres_tests/test_array.py')

diff --git a/tests/postgres_tests/test_array.py b/tests/postgres_tests/test_array.py
index fc4687b68c..89603e24a0 100644
--- a/tests/postgres_tests/test_array.py
+++ b/tests/postgres_tests/test_array.py
@@ -253,6 +253,24 @@ class TestQuerying(PostgreSQLTestCase):
             [obj],
         )
 
+    def test_exact_null_only_nested_array(self):
+        obj1 = NullableIntegerArrayModel.objects.create(field_nested=[[None, None]])
+        obj2 = NullableIntegerArrayModel.objects.create(
+            field_nested=[[None, None], [None, None]],
+        )
+        self.assertSequenceEqual(
+            NullableIntegerArrayModel.objects.filter(
+                field_nested__exact=[[None, None]],
+            ),
+            [obj1],
+        )
+        self.assertSequenceEqual(
+            NullableIntegerArrayModel.objects.filter(
+                field_nested__exact=[[None, None], [None, None]],
+            ),
+            [obj2],
+        )
+
     def test_exact_with_expression(self):
         self.assertSequenceEqual(
             NullableIntegerArrayModel.objects.filter(field__exact=[Value(1)]),
-- 
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