fixed some format issues and added better logging

freqtrade/aws/backtesting_lambda.py

@@ -63,11 +63,15 @@ def backtest(event, context):
                 if 'from' in event['body']:
                     yesterday = datetime.datetime.strptime(event['body']['from'], '%Y%m%d')
                 if 'till' in event['body']:
-                    yesterday = datetime.datetime.strptime(event['body']['till'], '%Y%m%d')
+                    today = datetime.datetime.strptime(event['body']['till'], '%Y%m%d')
 
                 try:
                     if "Items" in response and len(response['Items']) > 0:
 
+                        print("backtesting from {} till {} for {} with {} vs {}".format(yesterday, today, name,
+                                                                                        response['Items'][0][
+                                                                                            'stake_currency'],
+                                                                                        response['Items'][0]['assets']))
                         content = response['Items'][0]['content']
                         configuration = {
                             "max_open_trades": 1,

freqtrade/tests/aws/test_backtest.py

@@ -70,8 +70,8 @@ class MyFancyTestStrategy(IStrategy):
     request = {
         "user": "GCU4LW2XXZW3A3FM2XZJTEJHNWHTWDKY2DIJLCZJ5ULVZ4K7LZ7D23TG",
         "name": "MyFancyTestStrategy",
-        "from": "20180501",
-        "till": "20180401"
+        "from": "20180401",
+        "till": "20180501"
 
     }