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Check if number_assets is defined, as it's required by VolumePairList

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This commit is contained in:
Matthias 2018-12-06 19:36:33 +01:00
parent 2f0d7a1aea
commit a63f123b6d
3 changed files with 13 additions and 1 deletions
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2
docs/developer.md
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@ -43,7 +43,7 @@ Additional elements can be configured as needed. `VolumePairList` uses `"sort_ke
#### short_desc
Returns a description used for Telegram messages.
This should coutain the name of the Provider, as well as a short description containing the number of assets. Please follow the format `"PairlistName - top/bottom X pairs"`.
This should contain the name of the Provider, as well as a short description containing the number of assets. Please follow the format `"PairlistName - top/bottom X pairs"`.
#### refresh_pairlist

4
freqtrade/pairlist/VolumePairList.py
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@ -20,6 +20,10 @@ class VolumePairList(IPairList):
def __init__(self, freqtrade, config: dict) -> None:
super().__init__(freqtrade, config)
self._whitelistconf = self._config.get('pairlist', {}).get('config')
if 'number_assets' not in self._whitelistconf:
raise OperationalException(
f'`number_assets` not specified. Please check your configuration '
'for "pairlist.config.number_assets"')
self._number_pairs = self._whitelistconf['number_assets']
self._sort_key = self._whitelistconf.get('sort_key', 'quoteVolume')

8
freqtrade/tests/pairlist/test_pairlist.py
View File

@ -85,6 +85,14 @@ def test_refresh_pairlist_dynamic(mocker, markets, tickers, whitelist_conf):
assert whitelist == freqtradebot.pairlists.whitelist
whitelist_conf['pairlist'] = {'method': 'VolumePairList',
'config': {}
}
with pytest.raises(OperationalException,
match=r'`number_assets` not specified. Please check your configuration '
r'for "pairlist.config.number_assets"'):
PairListResolver('VolumePairList', freqtradebot, whitelist_conf).pairlist
def test_VolumePairList_refresh_empty(mocker, markets_empty, whitelist_conf):
freqtradebot = get_patched_freqtradebot(mocker, whitelist_conf)