test: debit note account mismatch

(cherry picked from commit bdca718103)

# Conflicts:
#	erpnext/accounts/doctype/purchase_invoice/test_purchase_invoice.py

erpnext/accounts/doctype/purchase_invoice/test_purchase_invoice.py

@@ -1893,6 +1893,55 @@ class TestPurchaseInvoice(FrappeTestCase, StockTestMixin):
 
 		self.assertEqual(pi.items[0].cost_center, "_Test Cost Center Buying - _TC")
 
+<<<<<<< HEAD
+=======
+	def test_debit_note_with_account_mismatch(self):
+		new_creditors = create_account(
+			parent_account="Accounts Payable - _TC",
+			account_name="Creditors 2",
+			company="_Test Company",
+			account_type="Payable",
+		)
+		pi = make_purchase_invoice(qty=1, rate=1000)
+		dr_note = make_purchase_invoice(
+			qty=-1, rate=1000, is_return=1, return_against=pi.name, do_not_save=True
+		)
+		dr_note.credit_to = new_creditors
+
+		self.assertRaises(frappe.ValidationError, dr_note.save)
+
+	def test_debit_note_without_item(self):
+		pi = make_purchase_invoice(item_name="_Test Item", qty=10, do_not_submit=True)
+		pi.items[0].item_code = ""
+		pi.save()
+
+		self.assertFalse(pi.items[0].item_code)
+		pi.submit()
+
+		return_pi = make_purchase_invoice(
+			item_name="_Test Item",
+			is_return=1,
+			return_against=pi.name,
+			qty=-10,
+			do_not_save=True,
+		)
+		return_pi.items[0].item_code = ""
+		return_pi.save()
+		return_pi.submit()
+		self.assertEqual(return_pi.docstatus, 1)
+
+
+def set_advance_flag(company, flag, default_account):
+	frappe.db.set_value(
+		"Company",
+		company,
+		{
+			"book_advance_payments_in_separate_party_account": flag,
+			"default_advance_paid_account": default_account,
+		},
+	)
+
+>>>>>>> bdca718103 (test: debit note account mismatch)
 
 def check_gl_entries(
 	doc,