stable/tests/pairlist/test_pairlist.py
hroff-1902 02c0488d45
Merge pull request #3453 from freqtrade/fix/3363
Backtesting should load pairlists after the strategy
2020-06-29 21:53:33 +03:00

558 lines
24 KiB
Python

# pragma pylint: disable=missing-docstring,C0103,protected-access
from unittest.mock import MagicMock, PropertyMock
import pytest
from freqtrade.constants import AVAILABLE_PAIRLISTS
from freqtrade.exceptions import OperationalException
from freqtrade.pairlist.pairlistmanager import PairListManager
from freqtrade.resolvers import PairListResolver
from tests.conftest import get_patched_freqtradebot, log_has, log_has_re
@pytest.fixture(scope="function")
def whitelist_conf(default_conf):
default_conf['stake_currency'] = 'BTC'
default_conf['exchange']['pair_whitelist'] = [
'ETH/BTC',
'TKN/BTC',
'TRST/BTC',
'SWT/BTC',
'BCC/BTC',
'HOT/BTC',
]
default_conf['exchange']['pair_blacklist'] = [
'BLK/BTC'
]
default_conf['pairlists'] = [
{
"method": "VolumePairList",
"number_assets": 5,
"sort_key": "quoteVolume",
},
]
return default_conf
@pytest.fixture(scope="function")
def whitelist_conf_2(default_conf):
default_conf['stake_currency'] = 'BTC'
default_conf['exchange']['pair_whitelist'] = [
'ETH/BTC', 'TKN/BTC', 'BLK/BTC', 'LTC/BTC',
'BTT/BTC', 'HOT/BTC', 'FUEL/BTC', 'XRP/BTC'
]
default_conf['exchange']['pair_blacklist'] = [
'BLK/BTC'
]
default_conf['pairlists'] = [
# { "method": "StaticPairList"},
{
"method": "VolumePairList",
"number_assets": 5,
"sort_key": "quoteVolume",
"refresh_period": 0,
},
]
return default_conf
@pytest.fixture(scope="function")
def whitelist_conf_3(default_conf):
default_conf['stake_currency'] = 'BTC'
default_conf['exchange']['pair_whitelist'] = [
'ETH/BTC', 'TKN/BTC', 'BLK/BTC', 'LTC/BTC',
'BTT/BTC', 'HOT/BTC', 'FUEL/BTC', 'XRP/BTC'
]
default_conf['exchange']['pair_blacklist'] = [
'BLK/BTC'
]
default_conf['pairlists'] = [
{
"method": "VolumePairList",
"number_assets": 5,
"sort_key": "quoteVolume",
"refresh_period": 0,
},
{
"method": "AgeFilter",
"min_days_listed": 2
}
]
return default_conf
@pytest.fixture(scope="function")
def static_pl_conf(whitelist_conf):
whitelist_conf['pairlists'] = [
{
"method": "StaticPairList",
},
]
return whitelist_conf
def test_log_on_refresh(mocker, static_pl_conf, markets, tickers):
mocker.patch.multiple('freqtrade.exchange.Exchange',
markets=PropertyMock(return_value=markets),
exchange_has=MagicMock(return_value=True),
get_tickers=tickers
)
freqtrade = get_patched_freqtradebot(mocker, static_pl_conf)
logmock = MagicMock()
# Assign starting whitelist
pl = freqtrade.pairlists._pairlist_handlers[0]
pl.log_on_refresh(logmock, 'Hello world')
assert logmock.call_count == 1
pl.log_on_refresh(logmock, 'Hello world')
assert logmock.call_count == 1
assert pl._log_cache.currsize == 1
assert ('Hello world',) in pl._log_cache._Cache__data
pl.log_on_refresh(logmock, 'Hello world2')
assert logmock.call_count == 2
assert pl._log_cache.currsize == 2
def test_load_pairlist_noexist(mocker, markets, default_conf):
freqtrade = get_patched_freqtradebot(mocker, default_conf)
mocker.patch('freqtrade.exchange.Exchange.markets', PropertyMock(return_value=markets))
plm = PairListManager(freqtrade.exchange, default_conf)
with pytest.raises(OperationalException,
match=r"Impossible to load Pairlist 'NonexistingPairList'. "
r"This class does not exist or contains Python code errors."):
PairListResolver.load_pairlist('NonexistingPairList', freqtrade.exchange, plm,
default_conf, {}, 1)
def test_refresh_market_pair_not_in_whitelist(mocker, markets, static_pl_conf):
freqtrade = get_patched_freqtradebot(mocker, static_pl_conf)
mocker.patch('freqtrade.exchange.Exchange.markets', PropertyMock(return_value=markets))
freqtrade.pairlists.refresh_pairlist()
# List ordered by BaseVolume
whitelist = ['ETH/BTC', 'TKN/BTC']
# Ensure all except those in whitelist are removed
assert set(whitelist) == set(freqtrade.pairlists.whitelist)
# Ensure config dict hasn't been changed
assert (static_pl_conf['exchange']['pair_whitelist'] ==
freqtrade.config['exchange']['pair_whitelist'])
def test_refresh_static_pairlist(mocker, markets, static_pl_conf):
freqtrade = get_patched_freqtradebot(mocker, static_pl_conf)
mocker.patch.multiple(
'freqtrade.exchange.Exchange',
exchange_has=MagicMock(return_value=True),
markets=PropertyMock(return_value=markets),
)
freqtrade.pairlists.refresh_pairlist()
# List ordered by BaseVolume
whitelist = ['ETH/BTC', 'TKN/BTC']
# Ensure all except those in whitelist are removed
assert set(whitelist) == set(freqtrade.pairlists.whitelist)
assert static_pl_conf['exchange']['pair_blacklist'] == freqtrade.pairlists.blacklist
def test_refresh_pairlist_dynamic(mocker, shitcoinmarkets, tickers, whitelist_conf):
mocker.patch.multiple(
'freqtrade.exchange.Exchange',
get_tickers=tickers,
exchange_has=MagicMock(return_value=True),
)
freqtrade = get_patched_freqtradebot(mocker, whitelist_conf)
# Remock markets with shitcoinmarkets since get_patched_freqtradebot uses the markets fixture
mocker.patch.multiple(
'freqtrade.exchange.Exchange',
markets=PropertyMock(return_value=shitcoinmarkets),
)
# argument: use the whitelist dynamically by exchange-volume
whitelist = ['ETH/BTC', 'TKN/BTC', 'LTC/BTC', 'XRP/BTC', 'HOT/BTC']
freqtrade.pairlists.refresh_pairlist()
assert whitelist == freqtrade.pairlists.whitelist
whitelist_conf['pairlists'] = [{'method': 'VolumePairList'}]
with pytest.raises(OperationalException,
match=r'`number_assets` not specified. Please check your configuration '
r'for "pairlist.config.number_assets"'):
PairListManager(freqtrade.exchange, whitelist_conf)
def test_refresh_pairlist_dynamic_2(mocker, shitcoinmarkets, tickers, whitelist_conf_2):
tickers_dict = tickers()
mocker.patch.multiple(
'freqtrade.exchange.Exchange',
exchange_has=MagicMock(return_value=True),
)
# Remove caching of ticker data to emulate changing volume by the time of second call
mocker.patch.multiple(
'freqtrade.pairlist.pairlistmanager.PairListManager',
_get_cached_tickers=MagicMock(return_value=tickers_dict),
)
freqtrade = get_patched_freqtradebot(mocker, whitelist_conf_2)
# Remock markets with shitcoinmarkets since get_patched_freqtradebot uses the markets fixture
mocker.patch.multiple(
'freqtrade.exchange.Exchange',
markets=PropertyMock(return_value=shitcoinmarkets),
)
whitelist = ['ETH/BTC', 'TKN/BTC', 'LTC/BTC', 'XRP/BTC', 'HOT/BTC']
freqtrade.pairlists.refresh_pairlist()
assert whitelist == freqtrade.pairlists.whitelist
whitelist = ['FUEL/BTC', 'ETH/BTC', 'TKN/BTC', 'LTC/BTC', 'XRP/BTC']
tickers_dict['FUEL/BTC']['quoteVolume'] = 10000.0
freqtrade.pairlists.refresh_pairlist()
assert whitelist == freqtrade.pairlists.whitelist
def test_VolumePairList_refresh_empty(mocker, markets_empty, whitelist_conf):
mocker.patch.multiple(
'freqtrade.exchange.Exchange',
exchange_has=MagicMock(return_value=True),
)
freqtrade = get_patched_freqtradebot(mocker, whitelist_conf)
mocker.patch('freqtrade.exchange.Exchange.markets', PropertyMock(return_value=markets_empty))
# argument: use the whitelist dynamically by exchange-volume
whitelist = []
whitelist_conf['exchange']['pair_whitelist'] = []
freqtrade.pairlists.refresh_pairlist()
pairslist = whitelist_conf['exchange']['pair_whitelist']
assert set(whitelist) == set(pairslist)
@pytest.mark.parametrize("pairlists,base_currency,whitelist_result", [
# VolumePairList only
([{"method": "VolumePairList", "number_assets": 5, "sort_key": "quoteVolume"}],
"BTC", ['ETH/BTC', 'TKN/BTC', 'LTC/BTC', 'XRP/BTC', 'HOT/BTC']),
# Different sorting depending on quote or bid volume
([{"method": "VolumePairList", "number_assets": 5, "sort_key": "bidVolume"}],
"BTC", ['HOT/BTC', 'FUEL/BTC', 'XRP/BTC', 'LTC/BTC', 'TKN/BTC']),
([{"method": "VolumePairList", "number_assets": 5, "sort_key": "quoteVolume"}],
"USDT", ['ETH/USDT', 'NANO/USDT', 'ADAHALF/USDT']),
# No pair for ETH, VolumePairList
([{"method": "VolumePairList", "number_assets": 5, "sort_key": "quoteVolume"}],
"ETH", []),
# No pair for ETH, StaticPairList
([{"method": "StaticPairList"}],
"ETH", []),
# No pair for ETH, all handlers
([{"method": "StaticPairList"},
{"method": "VolumePairList", "number_assets": 5, "sort_key": "quoteVolume"},
{"method": "AgeFilter", "min_days_listed": 2},
{"method": "PrecisionFilter"},
{"method": "PriceFilter", "low_price_ratio": 0.03},
{"method": "SpreadFilter", "max_spread_ratio": 0.005},
{"method": "ShuffleFilter"}],
"ETH", []),
# AgeFilter and VolumePairList (require 2 days only, all should pass age test)
([{"method": "VolumePairList", "number_assets": 5, "sort_key": "quoteVolume"},
{"method": "AgeFilter", "min_days_listed": 2}],
"BTC", ['ETH/BTC', 'TKN/BTC', 'LTC/BTC', 'XRP/BTC', 'HOT/BTC']),
# AgeFilter and VolumePairList (require 10 days, all should fail age test)
([{"method": "VolumePairList", "number_assets": 5, "sort_key": "quoteVolume"},
{"method": "AgeFilter", "min_days_listed": 10}],
"BTC", []),
# Precisionfilter and quote volume
([{"method": "VolumePairList", "number_assets": 5, "sort_key": "quoteVolume"},
{"method": "PrecisionFilter"}],
"BTC", ['ETH/BTC', 'TKN/BTC', 'LTC/BTC', 'XRP/BTC']),
# Precisionfilter bid
([{"method": "VolumePairList", "number_assets": 5, "sort_key": "bidVolume"},
{"method": "PrecisionFilter"}],
"BTC", ['FUEL/BTC', 'XRP/BTC', 'LTC/BTC', 'TKN/BTC']),
# PriceFilter and VolumePairList
([{"method": "VolumePairList", "number_assets": 5, "sort_key": "quoteVolume"},
{"method": "PriceFilter", "low_price_ratio": 0.03}],
"BTC", ['ETH/BTC', 'TKN/BTC', 'LTC/BTC', 'XRP/BTC']),
# PriceFilter and VolumePairList
([{"method": "VolumePairList", "number_assets": 5, "sort_key": "quoteVolume"},
{"method": "PriceFilter", "low_price_ratio": 0.03}],
"USDT", ['ETH/USDT', 'NANO/USDT']),
# Hot is removed by precision_filter, Fuel by low_price_filter.
([{"method": "VolumePairList", "number_assets": 6, "sort_key": "quoteVolume"},
{"method": "PrecisionFilter"},
{"method": "PriceFilter", "low_price_ratio": 0.02}],
"BTC", ['ETH/BTC', 'TKN/BTC', 'LTC/BTC', 'XRP/BTC']),
# HOT and XRP are removed because below 1250 quoteVolume
([{"method": "VolumePairList", "number_assets": 5,
"sort_key": "quoteVolume", "min_value": 1250}],
"BTC", ['ETH/BTC', 'TKN/BTC', 'LTC/BTC']),
# StaticPairlist only
([{"method": "StaticPairList"}],
"BTC", ['ETH/BTC', 'TKN/BTC', 'HOT/BTC']),
# Static Pairlist before VolumePairList - sorting changes
([{"method": "StaticPairList"},
{"method": "VolumePairList", "number_assets": 5, "sort_key": "bidVolume"}],
"BTC", ['HOT/BTC', 'TKN/BTC', 'ETH/BTC']),
# SpreadFilter
([{"method": "VolumePairList", "number_assets": 5, "sort_key": "quoteVolume"},
{"method": "SpreadFilter", "max_spread_ratio": 0.005}],
"USDT", ['ETH/USDT']),
# ShuffleFilter
([{"method": "VolumePairList", "number_assets": 5, "sort_key": "quoteVolume"},
{"method": "ShuffleFilter", "seed": 77}],
"USDT", ['ETH/USDT', 'ADAHALF/USDT', 'NANO/USDT']),
# ShuffleFilter, other seed
([{"method": "VolumePairList", "number_assets": 5, "sort_key": "quoteVolume"},
{"method": "ShuffleFilter", "seed": 42}],
"USDT", ['NANO/USDT', 'ETH/USDT', 'ADAHALF/USDT']),
# ShuffleFilter, no seed
([{"method": "VolumePairList", "number_assets": 5, "sort_key": "quoteVolume"},
{"method": "ShuffleFilter"}],
"USDT", 3), # whitelist_result is integer -- check only length of randomized pairlist
# AgeFilter only
([{"method": "AgeFilter", "min_days_listed": 2}],
"BTC", 'filter_at_the_beginning'), # OperationalException expected
# PrecisionFilter after StaticPairList
([{"method": "StaticPairList"},
{"method": "PrecisionFilter"}],
"BTC", ['ETH/BTC', 'TKN/BTC']),
# PrecisionFilter only
([{"method": "PrecisionFilter"}],
"BTC", 'filter_at_the_beginning'), # OperationalException expected
# PriceFilter after StaticPairList
([{"method": "StaticPairList"},
{"method": "PriceFilter", "low_price_ratio": 0.02}],
"BTC", ['ETH/BTC', 'TKN/BTC']),
# PriceFilter only
([{"method": "PriceFilter", "low_price_ratio": 0.02}],
"BTC", 'filter_at_the_beginning'), # OperationalException expected
# ShuffleFilter after StaticPairList
([{"method": "StaticPairList"},
{"method": "ShuffleFilter", "seed": 42}],
"BTC", ['TKN/BTC', 'ETH/BTC', 'HOT/BTC']),
# ShuffleFilter only
([{"method": "ShuffleFilter", "seed": 42}],
"BTC", 'filter_at_the_beginning'), # OperationalException expected
# SpreadFilter after StaticPairList
([{"method": "StaticPairList"},
{"method": "SpreadFilter", "max_spread_ratio": 0.005}],
"BTC", ['ETH/BTC', 'TKN/BTC']),
# SpreadFilter only
([{"method": "SpreadFilter", "max_spread_ratio": 0.005}],
"BTC", 'filter_at_the_beginning'), # OperationalException expected
# Static Pairlist after VolumePairList, on a non-first position
([{"method": "VolumePairList", "number_assets": 5, "sort_key": "bidVolume"},
{"method": "StaticPairList"}],
"BTC", 'static_in_the_middle'),
])
def test_VolumePairList_whitelist_gen(mocker, whitelist_conf, shitcoinmarkets, tickers,
ohlcv_history_list, pairlists, base_currency,
whitelist_result, caplog) -> None:
whitelist_conf['pairlists'] = pairlists
whitelist_conf['stake_currency'] = base_currency
mocker.patch('freqtrade.exchange.Exchange.exchange_has', MagicMock(return_value=True))
if whitelist_result == 'static_in_the_middle':
with pytest.raises(OperationalException,
match=r"StaticPairList can only be used in the first position "
r"in the list of Pairlist Handlers."):
freqtrade = get_patched_freqtradebot(mocker, whitelist_conf)
return
freqtrade = get_patched_freqtradebot(mocker, whitelist_conf)
mocker.patch.multiple('freqtrade.exchange.Exchange',
get_tickers=tickers,
markets=PropertyMock(return_value=shitcoinmarkets)
)
mocker.patch.multiple(
'freqtrade.exchange.Exchange',
get_historic_ohlcv=MagicMock(return_value=ohlcv_history_list),
)
# Set whitelist_result to None if pairlist is invalid and should produce exception
if whitelist_result == 'filter_at_the_beginning':
with pytest.raises(OperationalException,
match=r"This Pairlist Handler should not be used at the first position "
r"in the list of Pairlist Handlers."):
freqtrade.pairlists.refresh_pairlist()
else:
freqtrade.pairlists.refresh_pairlist()
whitelist = freqtrade.pairlists.whitelist
assert isinstance(whitelist, list)
# Verify length of pairlist matches (used for ShuffleFilter without seed)
if type(whitelist_result) is list:
assert whitelist == whitelist_result
else:
len(whitelist) == whitelist_result
for pairlist in pairlists:
if pairlist['method'] == 'AgeFilter' and pairlist['min_days_listed'] and \
len(ohlcv_history_list) <= pairlist['min_days_listed']:
assert log_has_re(r'^Removed .* from whitelist, because age is less than '
r'.* day.*', caplog)
if pairlist['method'] == 'PrecisionFilter' and whitelist_result:
assert log_has_re(r'^Removed .* from whitelist, because stop price .* '
r'would be <= stop limit.*', caplog)
if pairlist['method'] == 'PriceFilter' and whitelist_result:
assert (log_has_re(r'^Removed .* from whitelist, because 1 unit is .*%$', caplog) or
log_has_re(r"^Removed .* from whitelist, because ticker\['last'\] "
r"is empty.*", caplog))
if pairlist['method'] == 'VolumePairList':
logmsg = ("DEPRECATED: using any key other than quoteVolume for "
"VolumePairList is deprecated.")
if pairlist['sort_key'] != 'quoteVolume':
assert log_has(logmsg, caplog)
else:
assert not log_has(logmsg, caplog)
def test_PrecisionFilter_error(mocker, whitelist_conf, tickers) -> None:
whitelist_conf['pairlists'] = [{"method": "StaticPairList"}, {"method": "PrecisionFilter"}]
del whitelist_conf['stoploss']
mocker.patch('freqtrade.exchange.Exchange.exchange_has', MagicMock(return_value=True))
with pytest.raises(OperationalException,
match=r"PrecisionFilter can only work with stoploss defined\..*"):
PairListManager(MagicMock, whitelist_conf)
def test_gen_pair_whitelist_not_supported(mocker, default_conf, tickers) -> None:
default_conf['pairlists'] = [{'method': 'VolumePairList', 'number_assets': 10}]
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 dynamic whitelist.*'):
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
mocker.patch.multiple('freqtrade.exchange.Exchange',
markets=PropertyMock(return_value=markets),
exchange_has=MagicMock(return_value=True)
)
freqtrade = get_patched_freqtradebot(mocker, whitelist_conf)
assert freqtrade.pairlists.name_list == [pairlist]
assert pairlist in str(freqtrade.pairlists.short_desc())
assert isinstance(freqtrade.pairlists.whitelist, list)
assert isinstance(freqtrade.pairlists.blacklist, list)
@pytest.mark.parametrize("pairlist", AVAILABLE_PAIRLISTS)
@pytest.mark.parametrize("whitelist,log_message", [
(['ETH/BTC', 'TKN/BTC'], ""),
# TRX/ETH not in markets
(['ETH/BTC', 'TKN/BTC', 'TRX/ETH'], "is not compatible with exchange"),
# wrong stake
(['ETH/BTC', 'TKN/BTC', 'ETH/USDT'], "is not compatible with your stake currency"),
# BCH/BTC not available
(['ETH/BTC', 'TKN/BTC', 'BCH/BTC'], "is not compatible with exchange"),
# BTT/BTC is inactive
(['ETH/BTC', 'TKN/BTC', 'BTT/BTC'], "Market is not active")
])
def test__whitelist_for_active_markets(mocker, whitelist_conf, markets, pairlist, whitelist, caplog,
log_message, tickers):
whitelist_conf['pairlists'][0]['method'] = pairlist
mocker.patch.multiple('freqtrade.exchange.Exchange',
markets=PropertyMock(return_value=markets),
exchange_has=MagicMock(return_value=True),
get_tickers=tickers
)
freqtrade = get_patched_freqtradebot(mocker, whitelist_conf)
caplog.clear()
# Assign starting whitelist
pairlist_handler = freqtrade.pairlists._pairlist_handlers[0]
new_whitelist = pairlist_handler._whitelist_for_active_markets(whitelist)
assert set(new_whitelist) == set(['ETH/BTC', 'TKN/BTC'])
assert log_message in caplog.text
@pytest.mark.parametrize("pairlist", AVAILABLE_PAIRLISTS)
def test__whitelist_for_active_markets_empty(mocker, whitelist_conf, markets, pairlist, tickers):
whitelist_conf['pairlists'][0]['method'] = pairlist
mocker.patch('freqtrade.exchange.Exchange.exchange_has', return_value=True)
freqtrade = get_patched_freqtradebot(mocker, whitelist_conf)
mocker.patch.multiple('freqtrade.exchange.Exchange',
markets=PropertyMock(return_value=None),
get_tickers=tickers
)
# Assign starting whitelist
pairlist_handler = freqtrade.pairlists._pairlist_handlers[0]
with pytest.raises(OperationalException, match=r'Markets not loaded.*'):
pairlist_handler._whitelist_for_active_markets(['ETH/BTC'])
def test_volumepairlist_invalid_sortvalue(mocker, markets, whitelist_conf):
whitelist_conf['pairlists'][0].update({"sort_key": "asdf"})
mocker.patch('freqtrade.exchange.Exchange.exchange_has', MagicMock(return_value=True))
with pytest.raises(OperationalException,
match=r"key asdf not in .*"):
get_patched_freqtradebot(mocker, whitelist_conf)
def test_volumepairlist_caching(mocker, markets, whitelist_conf, tickers):
mocker.patch.multiple('freqtrade.exchange.Exchange',
markets=PropertyMock(return_value=markets),
exchange_has=MagicMock(return_value=True),
get_tickers=tickers
)
freqtrade = get_patched_freqtradebot(mocker, whitelist_conf)
assert freqtrade.pairlists._pairlist_handlers[0]._last_refresh == 0
assert tickers.call_count == 0
freqtrade.pairlists.refresh_pairlist()
assert tickers.call_count == 1
assert freqtrade.pairlists._pairlist_handlers[0]._last_refresh != 0
lrf = freqtrade.pairlists._pairlist_handlers[0]._last_refresh
freqtrade.pairlists.refresh_pairlist()
assert tickers.call_count == 1
# Time should not be updated.
assert freqtrade.pairlists._pairlist_handlers[0]._last_refresh == lrf
def test_agefilter_caching(mocker, markets, whitelist_conf_3, tickers, ohlcv_history_list):
mocker.patch.multiple('freqtrade.exchange.Exchange',
markets=PropertyMock(return_value=markets),
exchange_has=MagicMock(return_value=True),
get_tickers=tickers
)
mocker.patch.multiple(
'freqtrade.exchange.Exchange',
get_historic_ohlcv=MagicMock(return_value=ohlcv_history_list),
)
freqtrade = get_patched_freqtradebot(mocker, whitelist_conf_3)
assert freqtrade.exchange.get_historic_ohlcv.call_count == 0
freqtrade.pairlists.refresh_pairlist()
assert freqtrade.exchange.get_historic_ohlcv.call_count > 0
previous_call_count = freqtrade.exchange.get_historic_ohlcv.call_count
freqtrade.pairlists.refresh_pairlist()
# Should not have increased since first call.
assert freqtrade.exchange.get_historic_ohlcv.call_count == previous_call_count
def test_pairlistmanager_no_pairlist(mocker, markets, whitelist_conf, caplog):
mocker.patch('freqtrade.exchange.Exchange.exchange_has', MagicMock(return_value=True))
whitelist_conf['pairlists'] = []
with pytest.raises(OperationalException,
match=r"No Pairlist Handlers defined"):
get_patched_freqtradebot(mocker, whitelist_conf)