Fixed #27236 -- Deprecated Meta.index_together in favor of Meta.indexes.

This also deprecates AlterIndexTogether migration operation.

1 files changed, 20 insertions, 0 deletions

diff --git a/tests/model_options/test_index_together_deprecation.py b/tests/model_options/test_index_together_deprecation.py
new file mode 100644
index 0000000000..9b5362a924
--- /dev/null
+++ b/tests/model_options/test_index_together_deprecation.py
@@ -0,0 +1,20 @@
+from django.db import models
+from django.test import TestCase
+from django.utils.deprecation import RemovedInDjango51Warning
+
+
+class IndexTogetherDeprecationTests(TestCase):
+    def test_warning(self):
+        msg = (
+            "'index_together' is deprecated. Use 'Meta.indexes' in "
+            "'model_options.MyModel' instead."
+        )
+        with self.assertRaisesMessage(RemovedInDjango51Warning, msg):
+
+            class MyModel(models.Model):
+                field_1 = models.IntegerField()
+                field_2 = models.IntegerField()
+
+                class Meta:
+                    app_label = "model_options"
+                    index_together = ["field_1", "field_2"]