Merge pull request #27 from sposs/patch-1

Fix for identity rates

Author: Ravi kumar

forex_python/converter.py

@@ -56,6 +56,8 @@ def get_rates(self, base_cur, date_obj=None):
         raise RatesNotAvailableError("Currency Rates Source Not Ready")
 
     def get_rate(self, base_cur, dest_cur, date_obj=None):
+        if base_cur == dest_cur:
+            return 1.
         date_str = self._get_date_string(date_obj)
         payload = {'base': base_cur, 'symbols': dest_cur}
         source_url = self._source_url() + date_str

tests/test.py

@@ -50,6 +50,11 @@ def test_get_rate_with_valid_codes(self):
 
         # check if return value is float
         self.assertTrue(isinstance(rate, float))
+    
+    def test_get_rate_with_valid_codes_same_currency(self):
+        rate = get_rate('USD', 'USD')
+        # rate should be 1.
+        self.assertEqual(1., rate)
 
     def test_get_rate_with_date(self):
         date_obj = datetime.datetime.strptime('2010-05-10', "%Y-%m-%d").date()