From 84c6d92d4cf575e24c688b26072594d302994501 Mon Sep 17 00:00:00 2001
From: Matthias <xmatthias@outlook.com>
Date: Mon, 17 Jan 2022 19:26:03 +0100
Subject: [PATCH] calculate_funding_fees is actually a public exchange
 interface (used in backtesting).

---
 freqtrade/exchange/exchange.py    | 4 ++--
 freqtrade/exchange/kraken.py      | 2 +-
 freqtrade/optimize/backtesting.py | 2 +-
 tests/exchange/test_exchange.py   | 6 +++---
 4 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/freqtrade/exchange/exchange.py b/freqtrade/exchange/exchange.py
index 58b03e288..34dda1651 100644
--- a/freqtrade/exchange/exchange.py
+++ b/freqtrade/exchange/exchange.py
@@ -1923,7 +1923,7 @@ class Exchange:
         funding_rates = candle_histories[funding_comb]
         mark_rates = candle_histories[mark_comb]
 
-        return self._calculate_funding_fees(
+        return self.calculate_funding_fees(
             funding_rates=funding_rates,
             mark_rates=mark_rates,
             amount=amount,
@@ -1931,7 +1931,7 @@ class Exchange:
             close_date=close_date
         )
 
-    def _calculate_funding_fees(
+    def calculate_funding_fees(
         self,
         funding_rates: DataFrame,
         mark_rates: DataFrame,
diff --git a/freqtrade/exchange/kraken.py b/freqtrade/exchange/kraken.py
index 9e9fdcf79..a0f293f8c 100644
--- a/freqtrade/exchange/kraken.py
+++ b/freqtrade/exchange/kraken.py
@@ -159,7 +159,7 @@ class Kraken(Exchange):
             params['leverage'] = leverage
         return params
 
-    def _calculate_funding_fees(
+    def calculate_funding_fees(
         self,
         funding_rates: DataFrame,
         mark_rates: DataFrame,
diff --git a/freqtrade/optimize/backtesting.py b/freqtrade/optimize/backtesting.py
index 9ebc639ed..7bc5081de 100644
--- a/freqtrade/optimize/backtesting.py
+++ b/freqtrade/optimize/backtesting.py
@@ -488,7 +488,7 @@ class Backtesting:
         sell_candle_time: datetime = sell_row[DATE_IDX].to_pydatetime()
 
         if self.trading_mode == TradingMode.FUTURES:
-            trade.funding_fees = self.exchange._calculate_funding_fees(
+            trade.funding_fees = self.exchange.calculate_funding_fees(
                 funding_rates=self.futures_data[CandleType.FUNDING_RATE][trade.pair],
                 mark_rates=self.futures_data[CandleType.MARK][trade.pair],
                 amount=trade.amount,
diff --git a/tests/exchange/test_exchange.py b/tests/exchange/test_exchange.py
index 10956d048..d322b2d23 100644
--- a/tests/exchange/test_exchange.py
+++ b/tests/exchange/test_exchange.py
@@ -3563,7 +3563,7 @@ def test__calculate_funding_fees(
         {'date': trade_date, 'open': mark_price},
         ])
 
-    assert exchange._calculate_funding_fees(
+    assert exchange.calculate_funding_fees(
         funding_rates=funding_rates,
         mark_rates=mark_rates,
         amount=size,
@@ -3574,7 +3574,7 @@ def test__calculate_funding_fees(
 
     if (kraken_fee is None):
         with pytest.raises(OperationalException):
-            kraken._calculate_funding_fees(
+            kraken.calculate_funding_fees(
                 funding_rates=funding_rates,
                 mark_rates=mark_rates,
                 amount=size,
@@ -3584,7 +3584,7 @@ def test__calculate_funding_fees(
             )
 
     else:
-        assert kraken._calculate_funding_fees(
+        assert kraken.calculate_funding_fees(
             funding_rates=funding_rates,
             mark_rates=mark_rates,
             amount=size,