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wrote exchange.get_max_amount_tradable

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This commit is contained in:
Sam Germain 2022-01-29 03:22:08 -06:00
parent 179947fa72
commit f3b42b0ef3
2 changed files with 161 additions and 0 deletions
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14
freqtrade/exchange/exchange.py
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@ -2119,6 +2119,20 @@ class Exchange:
raise OperationalException( raise OperationalException(
"Freqtrade only supports isolated futures for leverage trading") "Freqtrade only supports isolated futures for leverage trading")
def get_max_amount_tradable(self, pair: str) -> float:
'''
Gets the maximum amount of a currency that the exchange will let you trade
'''
market = self.markets[pair]
contractSize = market['contractSize']
if not contractSize or market['spot']:
contractSize = 1
maxAmount = market['limits']['amount']['max']
if maxAmount:
return maxAmount * contractSize
else:
return float('inf')
def is_exchange_known_ccxt(exchange_name: str, ccxt_module: CcxtModuleType = None) -> bool: def is_exchange_known_ccxt(exchange_name: str, ccxt_module: CcxtModuleType = None) -> bool:
return exchange_name in ccxt_exchanges(ccxt_module) return exchange_name in ccxt_exchanges(ccxt_module)

147
tests/exchange/test_exchange.py
View File

@ -4042,3 +4042,150 @@ def test_liquidation_price(
upnl_ex_1=upnl_ex_1, upnl_ex_1=upnl_ex_1,
position=position, position=position,
), 2), expected) ), 2), expected)
def test_get_max_amount_tradable(
mocker,
default_conf,
):
api_mock = MagicMock()
exchange = get_patched_exchange(mocker, default_conf, api_mock)
markets = {
'XRP/USDT': {
'limits': {
'leverage': {
'min': None,
'max': None,
},
'amount': {
'min': 0.001,
'max': 10000
},
'price': {
'min': 39.86,
'max': 306177
},
'cost': {
'min': 5,
'max': None
},
'market': {
'min': 0.001,
'max': 2000
},
},
'precision': {
'price': 2,
'amount': 3,
'base': 8,
'quote': 8
},
'contractSize': None,
'spot': False,
'swap': True
},
'LTC/USDT': {
'limits': {
'leverage': {
'min': None,
'max': None,
},
'amount': {
'min': 0.001,
'max': None
},
'price': {
'min': 39.86,
'max': 306177
},
'cost': {
'min': 5,
'max': None
},
'market': {
'min': 0.001,
'max': 2000
},
},
'precision': {
'price': 2,
'amount': 3,
'base': 8,
'quote': 8
},
'contractSize': 0.01,
'spot': False,
'swap': True
},
'ETH/USDT': {
'limits': {
'leverage': {
'min': None,
'max': None,
},
'amount': {
'min': 0.001,
'max': 10000
},
'price': {
'min': 39.86,
'max': 306177
},
'cost': {
'min': 5,
'max': None
},
'market': {
'min': 0.001,
'max': 2000
},
},
'precision': {
'price': 2,
'amount': 3,
'base': 8,
'quote': 8
},
'contractSize': 0.01,
'spot': False,
'swap': True
},
'BTC/USDT': {
'limits': {
'leverage': {
'min': None,
'max': None,
},
'amount': {
'min': 0.001,
'max': 10000
},
'price': {
'min': 39.86,
'max': 306177
},
'cost': {
'min': 5,
'max': None
},
'market': {
'min': 0.001,
'max': 2000
},
},
'precision': {
'price': 2,
'amount': 3,
'base': 8,
'quote': 8
},
'contractSize': 0.01,
'spot': True,
'swap': False
}
}
mocker.patch('freqtrade.exchange.Exchange.markets', markets)
assert exchange.get_max_amount_tradable('XRP/USDT') == 10000
assert exchange.get_max_amount_tradable('LTC/USDT') == float('inf')
assert exchange.get_max_amount_tradable('ETH/USDT') == 100
assert exchange.get_max_amount_tradable('BTC/USDT') == 10000