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Spreadfilter should fail to start if fetchTickers is not supported

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This commit is contained in:
Matthias 2022-03-17 20:21:10 +01:00
parent 96bf82dbc6
commit f55db8e262
2 changed files with 19 additions and 0 deletions
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7
freqtrade/plugins/pairlist/SpreadFilter.py
View File

@ -4,6 +4,7 @@ Spread pair list filter
import logging
from typing import Any, Dict
from freqtrade.exceptions import OperationalException
from freqtrade.plugins.pairlist.IPairList import IPairList
@ -20,6 +21,12 @@ class SpreadFilter(IPairList):
self._max_spread_ratio = pairlistconfig.get('max_spread_ratio', 0.005)
self._enabled = self._max_spread_ratio != 0
if not self._exchange.exchange_has('fetchTickers'):
raise OperationalException(
'Exchange does not support fetchTickers, therefore SpreadFilter cannot be used.'
'Please edit your config and restart the bot.'
)
@property
def needstickers(self) -> bool:
"""

12
tests/plugins/test_pairlist.py
View File

@ -782,6 +782,18 @@ def test_gen_pair_whitelist_not_supported(mocker, default_conf, tickers) -> None
get_patched_freqtradebot(mocker, default_conf)
def test_pair_whitelist_not_supported_Spread(mocker, default_conf, tickers) -> None:
default_conf['pairlists'] = [{'method': 'StaticPairList'}, {'method': 'SpreadFilter'}]
mocker.patch.multiple('freqtrade.exchange.Exchange',
get_tickers=tickers,
exchange_has=MagicMock(return_value=False),
)
with pytest.raises(OperationalException,
match=r'Exchange does not support fetchTickers, .*'):
get_patched_freqtradebot(mocker, default_conf)
@pytest.mark.parametrize("pairlist", AVAILABLE_PAIRLISTS)
def test_pairlist_class(mocker, whitelist_conf, markets, pairlist):
whitelist_conf['pairlists'][0]['method'] = pairlist