Fixed #25143 -- Added ArrayField.from_db_value().

Thanks Karan Lyons for contributing to the patch.

1 files changed, 21 insertions, 1 deletions

diff --git a/tests/postgres_tests/test_array.py b/tests/postgres_tests/test_array.py
index 5df25c1c0f..f5c333e56f 100644
--- a/tests/postgres_tests/test_array.py
+++ b/tests/postgres_tests/test_array.py
@@ -15,7 +15,7 @@ from . import PostgreSQLTestCase
 from .models import (
     ArrayFieldSubclass, CharArrayModel, DateTimeArrayModel, IntegerArrayModel,
     NestedIntegerArrayModel, NullableIntegerArrayModel, OtherTypesArrayModel,
-    PostgreSQLModel,
+    PostgreSQLModel, Tag,
 )
 
 try:
@@ -92,12 +92,24 @@ class TestSaveLoad(PostgreSQLTestCase):
             ips=['192.168.0.1', '::1'],
             uuids=[uuid.uuid4()],
             decimals=[decimal.Decimal(1.25), 1.75],
+            tags=[Tag(1), Tag(2), Tag(3)],
         )
         instance.save()
         loaded = OtherTypesArrayModel.objects.get()
         self.assertEqual(instance.ips, loaded.ips)
         self.assertEqual(instance.uuids, loaded.uuids)
         self.assertEqual(instance.decimals, loaded.decimals)
+        self.assertEqual(instance.tags, loaded.tags)
+
+    def test_null_from_db_value_handling(self):
+        instance = OtherTypesArrayModel.objects.create(
+            ips=['192.168.0.1', '::1'],
+            uuids=[uuid.uuid4()],
+            decimals=[decimal.Decimal(1.25), 1.75],
+            tags=None,
+        )
+        instance.refresh_from_db()
+        self.assertIsNone(instance.tags)
 
     def test_model_set_on_base_field(self):
         instance = IntegerArrayModel()
@@ -306,11 +318,13 @@ class TestOtherTypesExactQuerying(PostgreSQLTestCase):
         self.ips = ['192.168.0.1', '::1']
         self.uuids = [uuid.uuid4()]
         self.decimals = [decimal.Decimal(1.25), 1.75]
+        self.tags = [Tag(1), Tag(2), Tag(3)]
         self.objs = [
             OtherTypesArrayModel.objects.create(
                 ips=self.ips,
                 uuids=self.uuids,
                 decimals=self.decimals,
+                tags=self.tags,
             )
         ]
 
@@ -332,6 +346,12 @@ class TestOtherTypesExactQuerying(PostgreSQLTestCase):
             self.objs
         )
 
+    def test_exact_tags(self):
+        self.assertSequenceEqual(
+            OtherTypesArrayModel.objects.filter(tags=self.tags),
+            self.objs
+        )
+
 
 @isolate_apps('postgres_tests')
 class TestChecks(PostgreSQLTestCase):