test: resolve failed testcases for exchage rate

(cherry picked from commit 3b5a203d61)

erpnext/accounts/doctype/payment_entry/test_payment_entry.py

@@ -537,6 +537,8 @@ class TestPaymentEntry(FrappeTestCase):
 		si.submit()
 
 		pe = get_payment_entry("Sales Invoice", si.name, bank_account="_Test Bank - _TC", bank_amount=4700)
+		pe.source_exchange_rate = 50
+		pe.set_amounts()
 		pe.reference_no = si.name
 		pe.reference_date = nowdate()
 
@@ -612,6 +614,8 @@ class TestPaymentEntry(FrappeTestCase):
 		pe = get_payment_entry(
 			"Sales Invoice", si.name, party_amount=20, bank_account="_Test Bank - _TC", bank_amount=900
 		)
+		pe.source_exchange_rate = 50
+		pe.set_amounts()
 		pe.reference_no = "1"
 		pe.reference_date = "2016-01-01"
 

erpnext/accounts/doctype/payment_request/test_payment_request.py

@@ -195,7 +195,12 @@ class TestPaymentRequest(FrappeTestCase):
 			return_doc=1,
 		)
 
-		pe = pr.set_as_paid()
+		pe = pr.create_payment_entry(submit=False)
+		pe.source_exchange_rate = 50
+		pe.target_exchange_rate = 50
+		pe.set_amounts()
+		pe.insert(ignore_permissions=True)
+		pe.submit()
 
 		expected_gle = dict(
 			(d[0], d)
@@ -281,7 +286,12 @@ class TestPaymentRequest(FrappeTestCase):
 		pr = make_payment_request(dt=po_doc.doctype, dn=po_doc.name, recipient_id="nabin@erpnext.com")
 		pr = frappe.get_doc(pr).save().submit()
 
-		pe = pr.create_payment_entry()
+		pe = pr.create_payment_entry(submit=False)
+		pe.target_exchange_rate = 80
+		pe.paid_amount = 800
+		pe.set_amounts()
+		pe.insert(ignore_permissions=True)
+		pe.submit()
 		self.assertEqual(pe.base_paid_amount, 800)
 		self.assertEqual(pe.paid_amount, 800)
 		self.assertEqual(pe.base_received_amount, 800)

erpnext/accounts/test/test_utils.py

@@ -89,6 +89,8 @@ class TestUtils(unittest.TestCase):
 		purchase_invoice.submit()
 
 		payment_entry = get_payment_entry(purchase_invoice.doctype, purchase_invoice.name)
+		payment_entry.target_exchange_rate = 82.32
+		payment_entry.set_amounts()
 		payment_entry.paid_amount = 15725
 		payment_entry.deductions = []
 		payment_entry.save()