From ee3b69ea63d854e8a685027f33f983924ec8d8ce Mon Sep 17 00:00:00 2001
From: Stefano Ariestasia <stefano.ariestasia@gmail.com>
Date: Sat, 22 Jul 2023 11:37:22 +0900
Subject: [PATCH] fix test

---
 freqtrade/data/metrics.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/freqtrade/data/metrics.py b/freqtrade/data/metrics.py
index ea28b17ce..271446339 100644
--- a/freqtrade/data/metrics.py
+++ b/freqtrade/data/metrics.py
@@ -200,6 +200,10 @@ def calculate_expectancy(trades: pd.DataFrame) -> float:
     :param trades: DataFrame containing trades (requires columns close_date and profit_abs)
     :return: expectancy
     """
+
+    if len(trades) == 0:
+        return 0
+
     winning_trades = trades.loc[trades['profit_abs'] > 0]
     losing_trades = trades.loc[trades['profit_abs'] < 0]
     profit_sum = winning_trades['profit_abs'].sum()