def adjust_order_amount(self, base_currency_code, market_currency_code,
amount):
exchange_name = self._make_exchange_name(base_currency_code,
market_currency_code)
if exchange_name not in self._filters:
return amount
order_filter = self._filters[exchange_name]
return utils.round_order_value(order_filter.amount_step, amount)
def adjust_order_rate(self, base_currency_code, market_currency_code,
rate):
exchange_name = self._make_exchange_name(base_currency_code,
market_currency_code)
if exchange_name not in self._filters:
return amount
order_filter = self._filters[exchange_name]
return utils.round_order_value(order_filter.price_tick, rate)
def test_rounding_by_decimals(self):
self.assertEqual(0.05, utils.round_order_value(0.001, 0.05056087))
self.assertEqual(0.051, utils.round_order_value(0.001, 0.051))
self.assertEqual(0.2, utils.round_order_value(0.001, 0.2001))
self.assertEqual(0.1, utils.round_order_value(0.1, 0.11))
self.assertEqual(0.5, utils.round_order_value(0.1, 0.56))
self.assertEqual(1.5, utils.round_order_value(0.1, 1.56))
self.assertEqual(1.56, utils.round_order_value(0.01, 1.56666))
def test_rounding_by_whole_numbers(self):
self.assertEqual(1.0, utils.round_order_value(1.0, 1.0))
self.assertEqual(2.0, utils.round_order_value(1.0, 2.0))
self.assertEqual(2.0, utils.round_order_value(1.0, 2.5))
self.assertEqual(0.0, utils.round_order_value(1.0, 0.5))
self.assertEqual(10.0, utils.round_order_value(10.0, 16.0))
self.assertEqual(100.0, utils.round_order_value(100.0, 115.0))