Fix small bug and test

2019-12-27 07:07:27 +01:00
parent c648d973c1
commit df085a6f15
2 changed files with 6 additions and 2 deletions
--- a/freqtrade/data/history.py
+++ b/freqtrade/data/history.py
@@ -239,10 +239,12 @@ def _load_cached_data_for_updating(pair: str, timeframe: str, timerange: Optiona
                                   timerange=None, fill_missing=False,
                                   drop_incomplete=True, warn_no_data=False)
    if not data.empty:
-        if start < data.iloc[0]['date']:
+        if start and start < data.iloc[0]['date']:
            # Earlier data than existing data requested, redownload all
            return DataFrame(columns=DEFAULT_DATAFRAME_COLUMNS), None
+
        start = data.iloc[-1]['date']
+
    start_ms = int(start.timestamp() * 1000) if start else None
    return data, start_ms