gateio, ftx and binance all use same funding fee formula

tests/exchange/test_binance.py

@@ -342,14 +342,6 @@ def test__set_leverage_binance(mocker, default_conf):
     )
 
 
-def test_get_funding_rate():
-    return
-
-
-def test__get_funding_fee():
-    return
-
-
 @pytest.mark.asyncio
 async def test__async_get_historic_ohlcv_binance(default_conf, mocker, caplog):
     ohlcv = [

tests/exchange/test_exchange.py

@@ -3292,3 +3292,11 @@ def test_get_funding_fee_dates():
 
 def test_calculate_funding_fees():
     return
+
+
+def test__get_funding_rate(default_conf, mocker):
+    return
+
+
+def test__get_funding_fee():
+    return

tests/exchange/test_ftx.py

@@ -1,4 +1,3 @@
-from datetime import datetime, timedelta
 from random import randint
 from unittest.mock import MagicMock
 
@@ -268,18 +267,3 @@ def test_fill_leverage_brackets_ftx(default_conf, mocker):
     exchange = get_patched_exchange(mocker, default_conf, id="ftx")
     exchange.fill_leverage_brackets()
     assert exchange._leverage_brackets == {}
-
-
-@pytest.mark.parametrize("pair,when", [
-    ('XRP/USDT', datetime.utcnow()),
-    ('ADA/BTC', datetime.utcnow()),
-    ('XRP/USDT', datetime.utcnow() - timedelta(hours=30)),
-])
-def test__get_funding_rate(default_conf, mocker, pair, when):
-    api_mock = MagicMock()
-    exchange = get_patched_exchange(mocker, default_conf, api_mock, id="ftx")
-    assert exchange._get_funding_rate(pair, when) is None
-
-
-def test__get_funding_fee():
-    return