Refs #16055 -- Deprecated get_joining_columns()/get_reverse_joining_columns() methods.

1 files changed, 47 insertions, 0 deletions

diff --git a/tests/foreign_object/tests.py b/tests/foreign_object/tests.py
index 3c06f07e06..c9e8da5792 100644
--- a/tests/foreign_object/tests.py
+++ b/tests/foreign_object/tests.py
@@ -8,6 +8,7 @@ from django.db import models
 from django.test import SimpleTestCase, TestCase, skipUnlessDBFeature
 from django.test.utils import isolate_apps
 from django.utils import translation
+from django.utils.deprecation import RemovedInDjango60Warning
 
 from .models import (
     Article,
@@ -687,3 +688,49 @@ class TestCachedPathInfo(TestCase):
         foreign_object_restored = pickle.loads(pickle.dumps(foreign_object))
         self.assertIn("path_infos", foreign_object_restored.__dict__)
         self.assertIn("reverse_path_infos", foreign_object_restored.__dict__)
+
+
+class GetJoiningDeprecationTests(TestCase):
+    def test_foreign_object_get_joining_columns_warning(self):
+        msg = (
+            "ForeignObject.get_joining_columns() is deprecated. Use "
+            "get_joining_fields() instead."
+        )
+        with self.assertWarnsMessage(RemovedInDjango60Warning, msg):
+            Membership.person.field.get_joining_columns()
+
+    def test_foreign_object_get_reverse_joining_columns_warning(self):
+        msg = (
+            "ForeignObject.get_reverse_joining_columns() is deprecated. Use "
+            "get_reverse_joining_fields() instead."
+        )
+        with self.assertWarnsMessage(RemovedInDjango60Warning, msg):
+            Membership.person.field.get_reverse_joining_columns()
+
+    def test_foreign_object_rel_get_joining_columns_warning(self):
+        msg = (
+            "ForeignObjectRel.get_joining_columns() is deprecated. Use "
+            "get_joining_fields() instead."
+        )
+        with self.assertWarnsMessage(RemovedInDjango60Warning, msg):
+            Membership.person.field.remote_field.get_joining_columns()
+
+    def test_join_get_joining_columns_warning(self):
+        class CustomForeignKey(models.ForeignKey):
+            def __getattribute__(self, attr):
+                if attr == "get_joining_fields":
+                    raise AttributeError
+                return super().__getattribute__(attr)
+
+        class CustomParent(models.Model):
+            value = models.CharField(max_length=255)
+
+        class CustomChild(models.Model):
+            links = CustomForeignKey(CustomParent, models.CASCADE)
+
+        msg = (
+            "The usage of get_joining_columns() in Join is deprecated. Implement "
+            "get_joining_fields() instead."
+        )
+        with self.assertWarnsMessage(RemovedInDjango60Warning, msg):
+            CustomChild.objects.filter(links__value="value")