Refs #26291 -- Added tests for dumpdata/loaddata with forward references without natural keys.

tests/fixtures/fixtures/forward_reference_fk.json

@@ -0,0 +1,18 @@
+[
+  {
+    "model": "fixtures.naturalkeything",
+    "pk": 1,
+    "fields": {
+      "key": "t1",
+      "other_thing": 2
+    }
+  },
+  {
+    "model": "fixtures.naturalkeything",
+    "pk": 2,
+    "fields": {
+      "key": "t2",
+      "other_thing": 1
+    }
+  }
+]

tests/fixtures/fixtures/forward_reference_m2m.json

@@ -0,0 +1,24 @@
+[
+  {
+    "model": "fixtures.naturalkeything",
+    "pk": 1,
+    "fields": {
+      "key": "t1",
+      "other_things": [2, 3]
+    }
+  },
+  {
+    "model": "fixtures.naturalkeything",
+    "pk": 2,
+    "fields": {
+      "key": "t2"
+    }
+  },
+  {
+    "model": "fixtures.naturalkeything",
+    "pk": 3,
+    "fields": {
+      "key": "t3"
+    }
+  }
+]

tests/fixtures/tests.py

@@ -789,6 +789,20 @@ class FixtureTransactionTests(DumpDataAssertMixin, TransactionTestCase):
 
 
 class ForwardReferenceTests(DumpDataAssertMixin, TestCase):
+    def test_forward_reference_fk(self):
+        management.call_command('loaddata', 'forward_reference_fk.json', verbosity=0)
+        self.assertEqual(NaturalKeyThing.objects.count(), 2)
+        t1, t2 = NaturalKeyThing.objects.all()
+        self.assertEqual(t1.other_thing, t2)
+        self.assertEqual(t2.other_thing, t1)
+        self._dumpdata_assert(
+            ['fixtures'],
+            '[{"model": "fixtures.naturalkeything", "pk": 1, '
+            '"fields": {"key": "t1", "other_thing": 2, "other_things": []}}, '
+            '{"model": "fixtures.naturalkeything", "pk": 2, '
+            '"fields": {"key": "t2", "other_thing": 1, "other_things": []}}]',
+        )
+
     def test_forward_reference_fk_natural_key(self):
         management.call_command(
             'loaddata',
@@ -809,6 +823,24 @@ class ForwardReferenceTests(DumpDataAssertMixin, TestCase):
             natural_foreign_keys=True,
         )
 
+    def test_forward_reference_m2m(self):
+        management.call_command('loaddata', 'forward_reference_m2m.json', verbosity=0)
+        self.assertEqual(NaturalKeyThing.objects.count(), 3)
+        t1 = NaturalKeyThing.objects.get_by_natural_key('t1')
+        self.assertQuerysetEqual(
+            t1.other_things.order_by('key'),
+            ['<NaturalKeyThing: t2>', '<NaturalKeyThing: t3>']
+        )
+        self._dumpdata_assert(
+            ['fixtures'],
+            '[{"model": "fixtures.naturalkeything", "pk": 1, '
+            '"fields": {"key": "t1", "other_thing": null, "other_things": [2, 3]}}, '
+            '{"model": "fixtures.naturalkeything", "pk": 2, '
+            '"fields": {"key": "t2", "other_thing": null, "other_things": []}}, '
+            '{"model": "fixtures.naturalkeything", "pk": 3, '
+            '"fields": {"key": "t3", "other_thing": null, "other_things": []}}]',
+        )
+
     def test_forward_reference_m2m_natural_key(self):
         management.call_command(
             'loaddata',