test: rename autoincrement document

frappe/__init__.py

@@ -1481,8 +1481,8 @@ def reload_doc(
 @whitelist(methods=["POST", "PUT"])
 def rename_doc(
 	doctype: str,
-	old: str,
-	new: str,
+	old: str | int,
+	new: str | int,
 	force: bool = False,
 	merge: bool = False,
 	*,

frappe/tests/test_rename_doc.py

@@ -279,3 +279,46 @@ class TestRenameDoc(IntegrationTestCase):
 
 		self.assertEqual(len(parent_a_instance.test_table), 1)
 		self.assertEqual(len(parent_b_instance.test_table), 1)
+
+	def test_rename_autoincrement_doc(self):
+		if not frappe.db.exists("DocType", "Autoincrement DocType"):
+			new_doctype(
+				"Autoincrement DocType",
+				naming_rule="Autoincrement",
+				autoname="autoincrement",
+				fields=[
+					{
+						"label": "First Name",
+						"fieldname": "first_name",
+						"fieldtype": "Data",
+					}
+				],
+			).insert()
+
+		if not frappe.db.exists("DocType", "Autoincrement Linked DocType"):
+			new_doctype(
+				"Autoincrement Linked DocType",
+				fields=[
+					{
+						"label": "Autoincrement DocType",
+						"fieldname": "autoincrement_doctype",
+						"fieldtype": "Link",
+						"options": "Autoincrement DocType",
+					}
+				],
+			).insert()
+
+		# create records
+		mary = frappe.new_doc("Autoincrement DocType", first_name="Mary").insert()
+		marilyn = frappe.new_doc("Autoincrement DocType", first_name="Marilyn").insert()
+		linked_with_marilyn = frappe.new_doc(
+			"Autoincrement Linked DocType", autoincrement_doctype=marilyn.name
+		).insert()
+		self.assertEqual(marilyn.name, linked_with_marilyn.autoincrement_doctype)
+
+		# rename marilyn to mary
+		frappe.rename_doc("Autoincrement DocType", marilyn.name, mary.name, merge=True)
+		linked_with_marilyn.reload()
+
+		self.assertTrue(frappe.db.exists("Autoincrement DocType", marilyn.name) is None)
+		self.assertEqual(linked_with_marilyn.autoincrement_doctype, frappe.utils.cstr(mary.name))