test: advance payment against reverse payment reconciliation

(cherry picked from commit 141f462368)

erpnext/accounts/doctype/payment_reconciliation/test_payment_reconciliation.py

@@ -102,6 +102,14 @@ class TestPaymentReconciliation(FrappeTestCase):
 				"account_currency": "USD",
 				"account_type": "Payable",
 			},
+			# 'Payable' account for capturing advance paid, under 'Assets' group
+			{
+				"attribute": "advance_payable_account",
+				"account_name": "Advance Paid",
+				"parent_account": "Current Assets - _PR",
+				"account_currency": "INR",
+				"account_type": "Payable",
+			},
 		]
 
 		for x in accounts:
@@ -1385,6 +1393,135 @@ class TestPaymentReconciliation(FrappeTestCase):
 		# There should be no Exchange Gain/Loss created
 		self.assertEqual(journals, [])
 
+	def test_advance_reverse_payment_against_payment_for_supplier(self):
+		"""
+		Reconcile an Advance payment against reverse payment, for a supplier.
+		"""
+		frappe.db.set_value(
+			"Company",
+			self.company,
+			{
+				"book_advance_payments_in_separate_party_account": 1,
+				"default_advance_paid_account": self.advance_payable_account,
+			},
+		)
+
+		self.supplier = "_Test Supplier"
+		amount = 4000
+
+		pe = self.create_payment_entry(amount=amount)
+		pe.party_type = "Supplier"
+		pe.party = self.supplier
+		pe.payment_type = "Pay"
+		pe.paid_from = self.cash
+		pe.paid_to = self.advance_payable_account
+		pe.save().submit()
+
+		reverse_pe = self.create_payment_entry(amount=amount)
+		reverse_pe.party_type = "Supplier"
+		reverse_pe.party = self.supplier
+		reverse_pe.payment_type = "Receive"
+		reverse_pe.paid_from = self.advance_payable_account
+		reverse_pe.paid_to = self.cash
+		reverse_pe.save().submit()
+
+		pr = self.create_payment_reconciliation(party_is_customer=False)
+		pr.default_advance_account = self.advance_payable_account
+		pr.get_unreconciled_entries()
+		self.assertEqual(len(pr.invoices), 1)
+		self.assertEqual(len(pr.payments), 1)
+		self.assertEqual(pr.invoices[0].invoice_number, reverse_pe.name)
+		self.assertEqual(pr.payments[0].reference_name, pe.name)
+
+		invoices = [invoice.as_dict() for invoice in pr.invoices]
+		payments = [payment.as_dict() for payment in pr.payments]
+		pr.allocate_entries(frappe._dict({"invoices": invoices, "payments": payments}))
+		pr.reconcile()
+
+		pe.reload()
+		self.assertEqual(len(pe.references), 1)
+		self.assertEqual(pe.references[0].exchange_rate, 1)
+		# There should not be any Exc Gain/Loss
+		self.assertEqual(pe.references[0].exchange_gain_loss, 0)
+		self.assertEqual(pe.references[0].reference_name, reverse_pe.name)
+
+		journals = frappe.db.get_all(
+			"Journal Entry",
+			filters={
+				"voucher_type": "Exchange Gain Or Loss",
+				"reference_type": "Payment Entry",
+				"reference_name": ("in", [pe.name, reverse_pe.name]),
+			},
+		)
+		# There should be no Exchange Gain/Loss created
+		self.assertEqual(journals, [])
+
+		# Assert Ledger Entries
+		gl_entries = frappe.db.get_all(
+			"GL Entry",
+			filters={"voucher_no": pe.name},
+			fields=["account", "voucher_no", "against_voucher", "debit", "credit"],
+			order_by="account, against_voucher, debit",
+		)
+		expected_gle = [
+			{
+				"account": self.advance_payable_account,
+				"voucher_no": pe.name,
+				"against_voucher": pe.name,
+				"debit": 0.0,
+				"credit": amount,
+			},
+			{
+				"account": self.advance_payable_account,
+				"voucher_no": pe.name,
+				"against_voucher": pe.name,
+				"debit": amount,
+				"credit": 0.0,
+			},
+			{
+				"account": self.advance_payable_account,
+				"voucher_no": pe.name,
+				"against_voucher": reverse_pe.name,
+				"debit": amount,
+				"credit": 0.0,
+			},
+			{
+				"account": "Cash - _PR",
+				"voucher_no": pe.name,
+				"against_voucher": None,
+				"debit": 0.0,
+				"credit": amount,
+			},
+		]
+		self.assertEqual(gl_entries, expected_gle)
+		pl_entries = frappe.db.get_all(
+			"Payment Ledger Entry",
+			filters={"voucher_no": pe.name},
+			fields=["account", "voucher_no", "against_voucher_no", "amount"],
+			order_by="account, against_voucher_no, amount",
+		)
+		expected_ple = [
+			{
+				"account": self.advance_payable_account,
+				"voucher_no": pe.name,
+				"against_voucher_no": pe.name,
+				"amount": -amount,
+			},
+			{
+				"account": self.advance_payable_account,
+				"voucher_no": pe.name,
+				"against_voucher_no": pe.name,
+				"amount": amount,
+			},
+			{
+				"account": self.advance_payable_account,
+				"voucher_no": pe.name,
+				"against_voucher_no": reverse_pe.name,
+				"amount": -amount,
+			},
+		]
+		self.assertEqual(pl_entries, expected_ple)
+
 
 def make_customer(customer_name, currency=None):
 	if not frappe.db.exists("Customer", customer_name):