add get_real_amount and tests

This commit is contained in:
Matthias Voppichler 2018-04-15 19:38:58 +02:00
parent 1332ab397f
commit 11d8f7d522
2 changed files with 240 additions and 0 deletions

View File

@ -362,6 +362,53 @@ class FreqtradeBot(object):
return self.handle_trade(trade) return self.handle_trade(trade)
return False return False
def get_real_amount(self, order: Trade) -> float:
"""
Get real amount for the trade
This is needed for exchanges which charge fees in target currency (binance)
"""
trades = exchange.get_trades_for_order(
order.open_order_id, order.pair, order.open_date)
if len(trades) == 0:
raise OperationalException("get_real_amount: no trade found")
amount = 0
fee = 0
for trade in trades:
amount += trade["amount"]
if "fee" in trade:
if order.pair.startswith(trade["fee"]["currency"]):
fee += trade["fee"]["cost"]
# TODO: create order using amount_lots would be better
if amount != order.amount:
self.logger.warning("amount {} does not match amount {}".format(amount, order.amount))
raise OperationalException("Half bought? Amounts don't match")
real_amount = amount - fee
return real_amount
def maybe_update_real_amount(self, trade: Trade) -> bool:
"""
Updates trade-amount with real amount
:return: True if real-amount has been changed.
"""
if trade.is_open and trade.open_order_id is None:
# Trade is not open anymore
self.logger.warning("could not open trade amount - Trade is not open anymore")
return False
try:
new_amount = self.get_real_amount(trade)
except OperationalException as exception:
self.logger.warning("could not update trade amount: %s", exception)
return False
# updating amount
self.logger.info("Updating amount for Trade {} from {} to {}".format(
trade, trade.amount, new_amount))
trade.amount = new_amount
Trade.session.flush()
return True
def handle_trade(self, trade: Trade) -> bool: def handle_trade(self, trade: Trade) -> bool:
""" """
Sells the current pair if the threshold is reached and updates the trade record. Sells the current pair if the threshold is reached and updates the trade record.

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@ -1281,3 +1281,196 @@ def test_sell_profit_only_disable_loss(default_conf, limit_buy_order, mocker) ->
trade.update(limit_buy_order) trade.update(limit_buy_order)
patch_get_signal(mocker, value=(False, True)) patch_get_signal(mocker, value=(False, True))
assert freqtrade.handle_trade(trade) is True assert freqtrade.handle_trade(trade) is True
def test_get_real_amount_quote(default_conf, trades_for_order, mocker):
"""
Test get_real_amount
"""
rv = [{'info': {'id': 34567,
'orderId': 123456,
'price': '0.24544100',
'qty': '8.00000000',
'commission': '0.00800000',
'commissionAsset': 'LTC',
'time': 1521663363189,
'isBuyer': True,
'isMaker': False,
'isBestMatch': True},
'timestamp': 1521663363189,
'datetime': '2018-03-21T20:16:03.189Z',
'symbol': 'LTC/ETH',
'id': '34567',
'order': '123456',
'type': None,
'side': 'buy',
'price': 0.245441,
'cost': 1.963528,
'amount': 8.0,
'fee': {'cost': 0.008, 'currency': 'LTC'}}]
mocker.patch('freqtrade.exchange.get_trades_for_order', return_value=rv)
patch_get_signal(mocker)
patch_RPCManager(mocker)
patch_coinmarketcap(mocker)
mocker.patch('freqtrade.exchange.validate_pairs', MagicMock(return_value=True))
trade = Trade(
pair='LTC/ETH',
amount=8,
exchange='binance',
open_order_id="123456"
)
freqtrade = FreqtradeBot(default_conf, create_engine('sqlite://'))
# Amount - cost
assert freqtrade.get_real_amount(trade) == 7.992
def test_get_real_amount_stake(default_conf, mocker):
"""
Test get_real_amount
"""
rv = [{'info': {'id': 34567,
'orderId': 123456,
'price': '0.24544100',
'qty': '8.00000000',
'commission': '0.00800000',
'commissionAsset': 'LTC',
'time': 1521663363189,
'isBuyer': True,
'isMaker': False,
'isBestMatch': True},
'timestamp': 1521663363189,
'datetime': '2018-03-21T20:16:03.189Z',
'symbol': 'LTC/ETH',
'id': '34567',
'order': '123456',
'type': None,
'side': 'buy',
'price': 0.245441,
'cost': 1.963528,
'amount': 8.0,
'fee': {'cost': 0.008, 'currency': 'ETH'}}]
mocker.patch('freqtrade.exchange.get_trades_for_order', return_value=rv)
patch_get_signal(mocker)
patch_RPCManager(mocker)
patch_coinmarketcap(mocker)
mocker.patch('freqtrade.exchange.validate_pairs', MagicMock(return_value=True))
trade = Trade(
pair='IOTA/ETH',
amount=8,
exchange='binance',
open_order_id="123456"
)
freqtrade = FreqtradeBot(default_conf, create_engine('sqlite://'))
# Amount - cost
assert freqtrade.get_real_amount(trade) == 8
def test_get_real_amount_BNB(default_conf, mocker):
"""
Test get_real_amount
"""
rv = [{'info': {'id': 34567,
'orderId': 123456,
'price': '0.24544100',
'qty': '8.00000000',
'commission': '0.00800000',
'commissionAsset': 'LTC',
'time': 1521663363189,
'isBuyer': True,
'isMaker': False,
'isBestMatch': True},
'timestamp': 1521663363189,
'datetime': '2018-03-21T20:16:03.189Z',
'symbol': 'LTC/ETH',
'id': '34567',
'order': '123456',
'type': None,
'side': 'buy',
'price': 0.245441,
'cost': 1.963528,
'amount': 8.0,
'fee': {'cost': 0.00094518, 'currency': 'BNB'}}]
mocker.patch('freqtrade.exchange.get_trades_for_order', return_value=rv)
patch_get_signal(mocker)
patch_RPCManager(mocker)
patch_coinmarketcap(mocker)
mocker.patch('freqtrade.exchange.validate_pairs', MagicMock(return_value=True))
trade = Trade(
pair='IOTA/ETH',
amount=8,
exchange='binance',
open_order_id="123456"
)
freqtrade = FreqtradeBot(default_conf, create_engine('sqlite://'))
# Amount - cost
assert freqtrade.get_real_amount(trade) == 8
def test_get_real_amount_multi(default_conf, mocker):
"""
Test get_real_amount
"""
rv = [{'info': {'id': 34567,
'orderId': 123456,
'price': '0.24544100',
'qty': '8.00000000',
'commission': '0.00800000',
'commissionAsset': 'LTC',
'time': 1521663363189,
'isBuyer': True,
'isMaker': False,
'isBestMatch': True},
'timestamp': 1521663363189,
'datetime': '2018-03-21T20:16:03.189Z',
'symbol': 'LTC/ETH',
'id': '34567',
'order': '123456',
'type': None,
'side': 'buy',
'price': 0.245441,
'cost': 1.963528,
'amount': 4.0,
'fee': {'cost': 0.004, 'currency': 'LTC'}},
{'info': {'id': 34567,
'orderId': 123456,
'price': '0.24544100',
'qty': '8.00000000',
'commission': '0.00800000',
'commissionAsset': 'LTC',
'time': 1521663363189,
'isBuyer': True,
'isMaker': False,
'isBestMatch': True},
'timestamp': 1521663363189,
'datetime': '2018-03-21T20:16:03.189Z',
'symbol': 'LTC/ETH',
'id': '34567',
'order': '123456',
'type': None,
'side': 'buy',
'price': 0.245441,
'cost': 1.963528,
'amount': 4.0,
'fee': {'cost': 0.004, 'currency': 'LTC'}}]
mocker.patch('freqtrade.exchange.get_trades_for_order', return_value=rv)
patch_get_signal(mocker)
patch_RPCManager(mocker)
patch_coinmarketcap(mocker)
mocker.patch('freqtrade.exchange.validate_pairs', MagicMock(return_value=True))
trade = Trade(
pair='LTC/ETH',
amount=8,
exchange='binance',
open_order_id="123456"
)
freqtrade = FreqtradeBot(default_conf, create_engine('sqlite://'))
# Amount - cost
assert freqtrade.get_real_amount(trade) == 7.992