test: Invoice status on Cr/Dr note cancellation

(cherry picked from commit 31a8c3bdc45f0e32a51e43260db8484e5f17aa75)

erpnext/accounts/doctype/payment_reconciliation/test_payment_reconciliation.py

@@ -591,6 +591,66 @@ class TestPaymentReconciliation(FrappeTestCase):
 		self.assertEqual(si.status, "Paid")
 		self.assertEqual(si.outstanding_amount, 0)
 
+	def test_invoice_status_after_cr_note_cancellation(self):
+		# This test case is made after the 'always standalone Credit/Debit notes' feature is introduced
+		transaction_date = nowdate()
+		amount = 100
+
+		si = self.create_sales_invoice(qty=1, rate=amount, posting_date=transaction_date)
+
+		cr_note = self.create_sales_invoice(
+			qty=-1, rate=amount, posting_date=transaction_date, do_not_save=True, do_not_submit=True
+		)
+		cr_note.is_return = 1
+		cr_note.return_against = si.name
+		cr_note = cr_note.save().submit()
+
+		pr = self.create_payment_reconciliation()
+
+		pr.get_unreconciled_entries()
+		invoices = [x.as_dict() for x in pr.get("invoices")]
+		payments = [x.as_dict() for x in pr.get("payments")]
+		pr.allocate_entries(frappe._dict({"invoices": invoices, "payments": payments}))
+		pr.reconcile()
+
+		pr.get_unreconciled_entries()
+		self.assertEqual(pr.get("invoices"), [])
+		self.assertEqual(pr.get("payments"), [])
+
+		journals = frappe.db.get_all(
+			"Journal Entry",
+			filters={
+				"is_system_generated": 1,
+				"docstatus": 1,
+				"voucher_type": "Credit Note",
+				"reference_type": si.doctype,
+				"reference_name": si.name,
+			},
+			pluck="name",
+		)
+		self.assertEqual(len(journals), 1)
+
+		# assert status outstanding
+		si.reload()
+		self.assertEqual(si.status, "Credit Note Issued")
+		self.assertEqual(si.outstanding_amount, 0)
+
+		cr_note.reload()
+		cr_note.cancel()
+		# 'Credit Note' Journal should be auto cancelled
+		journals = frappe.db.get_all(
+			"Journal Entry",
+			filters={
+				"is_system_generated": 1,
+				"docstatus": 1,
+				"voucher_type": "Credit Note",
+				"reference_type": si.doctype,
+				"reference_name": si.name,
+			},
+			pluck="name",
+		)
+		self.assertEqual(len(journals), 0)
+
 	def test_cr_note_partial_against_invoice(self):
 		transaction_date = nowdate()
 		amount = 100