adds new tests that verify that get_exchange_rate returns the latest exchange rate

erpnext/setup/doctype/currency_exchange/test_currency_exchange.py

@@ -6,15 +6,42 @@ from __future__ import unicode_literals
 import frappe, unittest
 test_records = frappe.get_test_records('Currency Exchange')
 
+
+def save_new_records(test_records):
+	for record in test_records:
+		kwargs = dict(
+			doctype=record.get("doctype"),
+			docname=record.get("date") + '-' + record.get("from_currency") + '-' + record.get("to_currency"),
+			fieldname="exchange_rate",
+			value=record.get("exchange_rate"),
+		)
+
+		try:
+			frappe.set_value(**kwargs)
+		except frappe.DoesNotExistError:
+			curr_exchange = frappe.new_doc(record.get("doctype"))
+			curr_exchange.date = record["date"]
+			curr_exchange.from_currency = record["from_currency"]
+			curr_exchange.to_currency = record["to_currency"]
+			curr_exchange.exchange_rate = record["exchange_rate"]
+			curr_exchange.insert()
+
+
 class TestCurrencyExchange(unittest.TestCase):
 	def test_exchnage_rate(self):
 		from erpnext.setup.utils import get_exchange_rate
-		
-		# Exchange rate as on 15th Jan, 2016, should be fetched from Currency Exchange record
-		exchange_rate = get_exchange_rate("USD", "INR", "2016-01-15")
+
+		save_new_records(test_records)
+
+		exchange_rate = get_exchange_rate("USD", "INR", "2016-01-01")
 		self.assertEqual(exchange_rate, 60.0)
+
+		exchange_rate = get_exchange_rate("USD", "INR", "2016-01-15")
+		self.assertEqual(exchange_rate, 65.1)
+
+		exchange_rate = get_exchange_rate("USD", "INR", "2016-01-30")
+		self.assertEqual(exchange_rate, 62.9)
 		
 		# Exchange rate as on 15th Dec, 2015, should be fetched from fixer.io
 		exchange_rate = get_exchange_rate("USD", "INR", "2015-12-15")
-		self.assertFalse(exchange_rate==60)
-		
+		self.assertFalse(exchange_rate==60)

erpnext/setup/doctype/currency_exchange/test_records.json

@@ -19,5 +19,19 @@
   "exchange_rate": 0.0167, 
   "from_currency": "INR", 
   "to_currency": "USD"
+ },
+ {
+  "doctype": "Currency Exchange",
+  "date": "2016-01-10",
+  "exchange_rate": 65.1,
+  "from_currency": "USD",
+  "to_currency": "INR"
+ },
+  {
+  "doctype": "Currency Exchange",
+  "date": "2016-01-30",
+  "exchange_rate": 62.9,
+  "from_currency": "USD",
+  "to_currency": "INR"
  }
 ]