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Check minimal amount

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This commit is contained in:
Anton 2018-06-12 01:05:43 +03:00
parent 90025d0ac4
commit 708320318c
2 changed files with 19 additions and 3 deletions
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12
freqtrade/freqtradebot.py
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@ -234,7 +234,7 @@ class FreqtradeBot(object):
return final_list
def get_target_bid(self, ticker: Dict[str, float]) -> Optional[float]:
def get_target_bid(self, ticker: Dict[str, float]) -> float:
"""
Calculates bid target between current ask price and last price
:param ticker: Ticker to use for getting Ask and Last Price
@ -245,7 +245,7 @@ class FreqtradeBot(object):
balance = self.config['bid_strategy']['ask_last_balance']
return ticker['ask'] + balance * (ticker['last'] - ticker['ask'])
def _get_trade_stake_amount(self) -> float:
def _get_trade_stake_amount(self) -> Optional[float]:
stake_amount = self.config['stake_amount']
avaliable_amount = exchange.get_balance(self.config['stake_currency'])
@ -254,7 +254,13 @@ class FreqtradeBot(object):
if open_trades >= self.config['max_open_trades']:
logger.warning('Can\'t open a new trade: max number of trades is reached')
return None
return avaliable_amount / (self.config['max_open_trades'] - open_trades)
trade_stake_amount = avaliable_amount / (self.config['max_open_trades'] - open_trades)
if trade_stake_amount < 0.0005:
raise DependencyException(
'Available balance(%f %s) is lower than minimal' % (
avaliable_amount, self.config['stake_currency'])
)
return trade_stake_amount
# Check if stake_amount is fulfilled
if avaliable_amount < stake_amount:

10
freqtrade/tests/test_freqtradebot.py
View File

@ -249,11 +249,21 @@ def test_get_trade_stake_amount_no_stake_amount(default_conf,
get_balance=MagicMock(return_value=default_conf['stake_amount'] * 0.5)
)
# test defined stake amount
freqtrade = FreqtradeBot(default_conf)
with pytest.raises(DependencyException, match=r'.*stake amount.*'):
freqtrade._get_trade_stake_amount()
# test UNLIMITED_STAKE_AMOUNT
conf = deepcopy(default_conf)
conf['stake_amount'] = constants.UNLIMITED_STAKE_AMOUNT
conf['max_open_trades'] = 2
freqtrade = FreqtradeBot(conf)
with pytest.raises(DependencyException, match=r'.*is lower than minimal.*'):
freqtrade._get_trade_stake_amount()
def test_get_trade_stake_amount_unlimited_amount(default_conf,
ticker,