test: varying posting date for gain loss journal

erpnext/controllers/tests/test_accounts_controller.py

@@ -7,7 +7,7 @@
 from frappe import qb
 from frappe.query_builder.functions import Sum
 from frappe.tests.utils import FrappeTestCase, change_settings
-from frappe.utils import add_days, flt, nowdate
+from frappe.utils import add_days, flt, getdate, nowdate
 
 from erpnext import get_default_cost_center
 from erpnext.accounts.doctype.payment_entry.payment_entry import get_payment_entry
@@ -614,6 +614,73 @@ def test_14_same_payment_split_against_invoice(self):
 		self.assertEqual(exc_je_for_si, [])
 		self.assertEqual(exc_je_for_pe, [])
 
+	def test_15_gain_loss_on_different_posting_date(self):
+		# Invoice in Foreign Currency
+		si = self.create_sales_invoice(
+			posting_date=add_days(nowdate(), -2), qty=2, conversion_rate=80, rate=1
+		)
+		# Payment
+		pe = (
+			self.create_payment_entry(posting_date=add_days(nowdate(), -1), amount=2, source_exc_rate=75)
+			.save()
+			.submit()
+		)
+
+		# There should be outstanding in both currencies
+		si.reload()
+		self.assertEqual(si.outstanding_amount, 2)
+		self.assert_ledger_outstanding(si.doctype, si.name, 160.0, 2.0)
+
+		# Reconcile the remaining amount
+		pr = frappe.get_doc("Payment Reconciliation")
+		pr.company = self.company
+		pr.party_type = "Customer"
+		pr.party = self.customer
+		pr.receivable_payable_account = self.debit_usd
+		pr.get_unreconciled_entries()
+		self.assertEqual(len(pr.invoices), 1)
+		self.assertEqual(len(pr.payments), 1)
+		invoices = [x.as_dict() for x in pr.invoices]
+		payments = [x.as_dict() for x in pr.payments]
+		pr.allocate_entries(frappe._dict({"invoices": invoices, "payments": payments}))
+		pr.allocation[0].gain_loss_posting_date = add_days(nowdate(), 1)
+		pr.reconcile()
+
+		# Exchange Gain/Loss Journal should've been created.
+		exc_je_for_si = self.get_journals_for(si.doctype, si.name)
+		exc_je_for_pe = self.get_journals_for(pe.doctype, pe.name)
+		self.assertNotEqual(exc_je_for_si, [])
+		self.assertEqual(len(exc_je_for_si), 1)
+		self.assertEqual(len(exc_je_for_pe), 1)
+		self.assertEqual(exc_je_for_si[0], exc_je_for_pe[0])
+
+		self.assertEqual(
+			frappe.db.get_value("Journal Entry", exc_je_for_si[0].parent, "posting_date"),
+			getdate(add_days(nowdate(), 1)),
+		)
+
+		self.assertEqual(len(pr.invoices), 0)
+		self.assertEqual(len(pr.payments), 0)
+
+		# There should be no outstanding
+		si.reload()
+		self.assertEqual(si.outstanding_amount, 0)
+		self.assert_ledger_outstanding(si.doctype, si.name, 0.0, 0.0)
+
+		# Cancel Payment
+		pe.reload()
+		pe.cancel()
+
+		si.reload()
+		self.assertEqual(si.outstanding_amount, 2)
+		self.assert_ledger_outstanding(si.doctype, si.name, 160.0, 2.0)
+
+		# Exchange Gain/Loss Journal should've been cancelled
+		exc_je_for_si = self.get_journals_for(si.doctype, si.name)
+		exc_je_for_pe = self.get_journals_for(pe.doctype, pe.name)
+		self.assertEqual(exc_je_for_si, [])
+		self.assertEqual(exc_je_for_pe, [])
+
 	def test_20_journal_against_sales_invoice(self):
 		# Invoice in Foreign Currency
 		si = self.create_sales_invoice(qty=1, conversion_rate=80, rate=1)