[2.1.x] Fixed #29000 -- Fixed RenameModel's renaming of a M2M column when run after RenameField.

Regression in 45ded053b1f4320284aa5dac63052f6d1baefea9.

Backport of fcc4e251dbc917118f73d7187ee2f4cbf3883f36 from master

1 files changed, 28 insertions, 0 deletions

diff --git a/tests/migrations/test_operations.py b/tests/migrations/test_operations.py
index b5c9fb1b3d..d70feaacdb 100644
--- a/tests/migrations/test_operations.py
+++ b/tests/migrations/test_operations.py
@@ -802,6 +802,34 @@ class OperationTests(OperationTestBase):
         self.assertEqual(PonyRider.objects.count(), 2)
         self.assertEqual(pony.riders.count(), 2)
 
+    def test_rename_m2m_model_after_rename_field(self):
+        """RenameModel renames a many-to-many column after a RenameField."""
+        app_label = 'test_rename_multiple'
+        project_state = self.apply_operations(app_label, ProjectState(), operations=[
+            migrations.CreateModel('Pony', fields=[
+                ('id', models.AutoField(primary_key=True)),
+                ('name', models.CharField(max_length=20)),
+            ]),
+            migrations.CreateModel('Rider', fields=[
+                ('id', models.AutoField(primary_key=True)),
+                ('pony', models.ForeignKey('test_rename_multiple.Pony', models.CASCADE)),
+            ]),
+            migrations.CreateModel('PonyRider', fields=[
+                ('id', models.AutoField(primary_key=True)),
+                ('riders', models.ManyToManyField('Rider')),
+            ]),
+            migrations.RenameField(model_name='pony', old_name='name', new_name='fancy_name'),
+            migrations.RenameModel(old_name='Rider', new_name='Jockey'),
+        ], atomic=connection.features.supports_atomic_references_rename)
+        Pony = project_state.apps.get_model(app_label, 'Pony')
+        Jockey = project_state.apps.get_model(app_label, 'Jockey')
+        PonyRider = project_state.apps.get_model(app_label, 'PonyRider')
+        # No "no such column" error means the column was renamed correctly.
+        pony = Pony.objects.create(fancy_name='a good name')
+        jockey = Jockey.objects.create(pony=pony)
+        ponyrider = PonyRider.objects.create()
+        ponyrider.riders.add(jockey)
+
     def test_add_field(self):
         """
         Tests the AddField operation.