fix: added test case of the issue

erpnext/accounts/report/accounts_payable/test_accounts_payable.py

@@ -0,0 +1,67 @@
+import unittest
+
+import frappe
+from frappe.tests.utils import FrappeTestCase, change_settings
+from frappe.utils import add_days, flt, getdate, today
+
+from erpnext import get_default_cost_center
+from erpnext.accounts.doctype.payment_entry.payment_entry import get_payment_entry
+from erpnext.accounts.doctype.purchase_invoice.test_purchase_invoice import make_purchase_invoice
+from erpnext.accounts.doctype.sales_invoice.test_sales_invoice import create_sales_invoice
+from erpnext.accounts.report.accounts_payable.accounts_payable import execute
+from erpnext.accounts.test.accounts_mixin import AccountsTestMixin
+from erpnext.selling.doctype.sales_order.test_sales_order import make_sales_order
+
+
+class TestAccountsReceivable(AccountsTestMixin, FrappeTestCase):
+	def setUp(self):
+		self.create_company()
+		self.create_customer()
+		self.create_item()
+		self.create_supplier(currency="USD", supplier_name="Test Supplier2")
+		self.create_usd_payable_account()
+
+	def tearDown(self):
+		frappe.db.rollback()
+
+	def test_accounts_receivable_with_supplier(self):
+		pi = self.create_purchase_invoice(do_not_submit=True)
+		pi.currency = "USD"
+		pi.conversion_rate = 80
+		pi.credit_to = self.creditors_usd
+		pi = pi.save().submit()
+
+		filters = {
+			"company": self.company,
+			"party_type": "Supplier",
+			"party": self.supplier,
+			"report_date": today(),
+			"range1": 30,
+			"range2": 60,
+			"range3": 90,
+			"range4": 120,
+		}
+
+		data = execute(filters)
+		self.assertEqual(data[1][0].get("outstanding"), 300)
+		self.assertEqual(data[1][0].get("currency"), "USD")
+
+	def create_purchase_invoice(self, do_not_submit=False):
+		frappe.set_user("Administrator")
+		pi = make_purchase_invoice(
+			item=self.item,
+			company=self.company,
+			supplier=self.supplier,
+			is_return=False,
+			update_stock=False,
+			posting_date=frappe.utils.datetime.date(2021, 5, 1),
+			do_not_save=1,
+			rate=300,
+			price_list_rate=300,
+			qty=1,
+		)
+
+		pi = pi.save()
+		if not do_not_submit:
+			pi = pi.submit()
+		return pi

erpnext/accounts/test/accounts_mixin.py

@@ -126,6 +126,28 @@ def create_usd_receivable_account(self):
 			acc = frappe.get_doc("Account", name)
 		self.debtors_usd = acc.name
 
+	def create_usd_payable_account(self):
+		account_name = "Creditors USD"
+		if not frappe.db.get_value(
+			"Account", filters={"account_name": account_name, "company": self.company}
+		):
+			acc = frappe.new_doc("Account")
+			acc.account_name = account_name
+			acc.parent_account = "Accounts Payable - " + self.company_abbr
+			acc.company = self.company
+			acc.account_currency = "USD"
+			acc.account_type = "Payable"
+			acc.insert()
+		else:
+			name = frappe.db.get_value(
+				"Account",
+				filters={"account_name": account_name, "company": self.company},
+				fieldname="name",
+				pluck=True,
+			)
+			acc = frappe.get_doc("Account", name)
+		self.creditors_usd = acc.name
+
 	def clear_old_entries(self):
 		doctype_list = [
 			"GL Entry",