Fixed #33572 -- Implemented CreateModel/AlterModelManagers reduction.

1 files changed, 24 insertions, 0 deletions

diff --git a/tests/migrations/test_optimizer.py b/tests/migrations/test_optimizer.py
index 59dd401a3c..6bde378cd9 100644
--- a/tests/migrations/test_optimizer.py
+++ b/tests/migrations/test_optimizer.py
@@ -129,6 +129,30 @@ class OptimizerTests(SimpleTestCase):
             ],
         )
 
+    def test_create_alter_model_managers(self):
+        self.assertOptimizesTo(
+            [
+                migrations.CreateModel("Foo", fields=[]),
+                migrations.AlterModelManagers(
+                    name="Foo",
+                    managers=[
+                        ("objects", models.Manager()),
+                        ("things", models.Manager()),
+                    ],
+                ),
+            ],
+            [
+                migrations.CreateModel(
+                    "Foo",
+                    fields=[],
+                    managers=[
+                        ("objects", models.Manager()),
+                        ("things", models.Manager()),
+                    ],
+                ),
+            ],
+        )
+
     def test_create_model_and_remove_model_options(self):
         self.assertOptimizesTo(
             [