Fix unit test as per issue #203

Author: alistair

tests/test_public_client.py

@@ -1,6 +1,8 @@
 import pytest
 import gdax
 import time
+import datetime
+from dateutil.relativedelta import relativedelta
 
 
 @pytest.fixture(scope='module')
@@ -46,9 +48,11 @@ def test_get_product_trades(self, client):
         assert type(r) is list
         assert 'trade_id' in r[0]
 
-    @pytest.mark.parametrize('start', ('2017-11-01', None))
-    @pytest.mark.parametrize('end', ('2017-11-30', None))
-    @pytest.mark.parametrize('granularity', (3600, None))
+    current_time = datetime.datetime.now()
+
+    @pytest.mark.parametrize('start,end,granularity',
+                             [(current_time - relativedelta(months=1),
+                               current_time, 10000)])
     def test_get_historic_rates(self, client, start, end, granularity):
         r = client.get_product_historic_rates('BTC-USD', start=start, end=end, granularity=granularity)
         assert type(r) is list