test: invoice outstandings and payments
diff --git a/erpnext/accounts/report/payment_ledger/test_payment_ledger.py b/erpnext/accounts/report/payment_ledger/test_payment_ledger.py
new file mode 100644
index 0000000..5ae9b87
--- /dev/null
+++ b/erpnext/accounts/report/payment_ledger/test_payment_ledger.py
@@ -0,0 +1,65 @@
+import unittest
+
+import frappe
+from frappe import qb
+from frappe.tests.utils import FrappeTestCase
+
+from erpnext.accounts.doctype.payment_entry.payment_entry import get_payment_entry
+from erpnext.accounts.doctype.sales_invoice.test_sales_invoice import create_sales_invoice
+from erpnext.accounts.report.payment_ledger.payment_ledger import execute
+
+
+class TestPaymentLedger(FrappeTestCase):
+	def setUp(self):
+		self.create_company()
+		self.cleanup()
+
+	def cleanup(self):
+		doctypes = []
+		doctypes.append(qb.DocType("GL Entry"))
+		doctypes.append(qb.DocType("Payment Ledger Entry"))
+		doctypes.append(qb.DocType("Sales Invoice"))
+		doctypes.append(qb.DocType("Payment Entry"))
+
+		for doctype in doctypes:
+			qb.from_(doctype).delete().where(doctype.company == self.company).run()
+
+	def create_company(self):
+		name = "Test Payment Ledger"
+		company = None
+		if frappe.db.exists("Company", name):
+			company = frappe.get_doc("Company", name)
+		else:
+			company = frappe.get_doc(
+				{
+					"doctype": "Company",
+					"company_name": name,
+					"country": "India",
+					"default_currency": "INR",
+					"create_chart_of_accounts_based_on": "Standard Template",
+					"chart_of_accounts": "Standard",
+				}
+			)
+			company = company.save()
+		self.company = company.name
+		self.cost_center = company.cost_center
+		self.warehouse = "All Warehouses" + " - " + company.abbr
+		self.income_account = company.default_income_account
+		self.expense_account = company.default_expense_account
+		self.debit_to = company.default_receivable_account
+
+	def test_unpaid_invoice_outstanding(self):
+		sinv = create_sales_invoice(
+			company=self.company,
+			debit_to=self.debit_to,
+			expense_account=self.expense_account,
+			cost_center=self.cost_center,
+			income_account=self.income_account,
+			warehouse=self.warehouse,
+		)
+		pe = get_payment_entry(sinv.doctype, sinv.name).save().submit()
+
+		filters = frappe._dict({"company": self.company})
+		columns, data = execute(filters=filters)
+		outstanding = [x for x in data if x.get("against_voucher_no") == "Outstanding:"]
+		self.assertEqual(outstanding[0].get("amount"), 0)