stable/tests/exchange/test_binance.py

from random import randint
from unittest.mock import MagicMock

import ccxt
import pytest

from freqtrade.exceptions import (DependencyException, InvalidOrderException,
                                  OperationalException, TemporaryError)
from tests.conftest import get_patched_exchange


def test_stoploss_limit_order(default_conf, mocker):
    api_mock = MagicMock()
    order_id = 'test_prod_buy_{}'.format(randint(0, 10 ** 6))
    order_type = 'stop_loss_limit'

    api_mock.create_order = MagicMock(return_value={
        'id': order_id,
        'info': {
            'foo': 'bar'
        }
    })

    default_conf['dry_run'] = False
    mocker.patch('freqtrade.exchange.Exchange.amount_to_precision', lambda s, x, y: y)
    mocker.patch('freqtrade.exchange.Exchange.price_to_precision', lambda s, x, y: y)

    exchange = get_patched_exchange(mocker, default_conf, api_mock, 'binance')

    with pytest.raises(OperationalException):
        order = exchange.stoploss_limit(pair='ETH/BTC', amount=1, stop_price=190, rate=200)

    api_mock.create_order.reset_mock()

    order = exchange.stoploss_limit(pair='ETH/BTC', amount=1, stop_price=220, rate=200)

    assert 'id' in order
    assert 'info' in order
    assert order['id'] == order_id
    assert api_mock.create_order.call_args[0][0] == 'ETH/BTC'
    assert api_mock.create_order.call_args[0][1] == order_type
    assert api_mock.create_order.call_args[0][2] == 'sell'
    assert api_mock.create_order.call_args[0][3] == 1
    assert api_mock.create_order.call_args[0][4] == 200
    assert api_mock.create_order.call_args[0][5] == {'stopPrice': 220}

    # test exception handling
    with pytest.raises(DependencyException):
        api_mock.create_order = MagicMock(side_effect=ccxt.InsufficientFunds("0 balance"))
        exchange = get_patched_exchange(mocker, default_conf, api_mock, 'binance')
        exchange.stoploss_limit(pair='ETH/BTC', amount=1, stop_price=220, rate=200)

    with pytest.raises(InvalidOrderException):
        api_mock.create_order = MagicMock(
            side_effect=ccxt.InvalidOrder("binance Order would trigger immediately."))
        exchange = get_patched_exchange(mocker, default_conf, api_mock, 'binance')
        exchange.stoploss_limit(pair='ETH/BTC', amount=1, stop_price=220, rate=200)

    with pytest.raises(TemporaryError):
        api_mock.create_order = MagicMock(side_effect=ccxt.NetworkError("No connection"))
        exchange = get_patched_exchange(mocker, default_conf, api_mock, 'binance')
        exchange.stoploss_limit(pair='ETH/BTC', amount=1, stop_price=220, rate=200)

    with pytest.raises(OperationalException, match=r".*DeadBeef.*"):
        api_mock.create_order = MagicMock(side_effect=ccxt.BaseError("DeadBeef"))
        exchange = get_patched_exchange(mocker, default_conf, api_mock, 'binance')
        exchange.stoploss_limit(pair='ETH/BTC', amount=1, stop_price=220, rate=200)


def test_stoploss_limit_order_dry_run(default_conf, mocker):
    api_mock = MagicMock()
    order_type = 'stop_loss_limit'
    default_conf['dry_run'] = True
    mocker.patch('freqtrade.exchange.Exchange.amount_to_precision', lambda s, x, y: y)
    mocker.patch('freqtrade.exchange.Exchange.price_to_precision', lambda s, x, y: y)

    exchange = get_patched_exchange(mocker, default_conf, api_mock, 'binance')

    with pytest.raises(OperationalException):
        order = exchange.stoploss_limit(pair='ETH/BTC', amount=1, stop_price=190, rate=200)

    api_mock.create_order.reset_mock()

    order = exchange.stoploss_limit(pair='ETH/BTC', amount=1, stop_price=220, rate=200)

    assert 'id' in order
    assert 'info' in order
    assert 'type' in order

    assert order['type'] == order_type
    assert order['price'] == 220
    assert order['amount'] == 1