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Fix calculation error for min-trade-stake

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This commit is contained in:
Matthias
2021-03-20 07:21:22 +01:00
parent 0d5833ed91
commit 7ffe1fd36a
3 changed files with 34 additions and 9 deletions
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18
tests/exchange/test_exchange.py
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@@ -1,6 +1,7 @@
import copy
import logging
from datetime import datetime, timedelta, timezone
from math import isclose
from random import randint
from unittest.mock import MagicMock, Mock, PropertyMock, patch
@@ -370,7 +371,7 @@ def test_get_min_pair_stake_amount(mocker, default_conf) -> None:
PropertyMock(return_value=markets)
)
result = exchange.get_min_pair_stake_amount('ETH/BTC', 1, stoploss)
assert result == 2 / 0.9
assert isclose(result, 2 * 1.1)
# min amount is set
markets["ETH/BTC"]["limits"] = {
@@ -382,7 +383,7 @@ def test_get_min_pair_stake_amount(mocker, default_conf) -> None:
PropertyMock(return_value=markets)
)
result = exchange.get_min_pair_stake_amount('ETH/BTC', 2, stoploss)
assert result == 2 * 2 / 0.9
assert isclose(result, 2 * 2 * 1.1)
# min amount and cost are set (cost is minimal)
markets["ETH/BTC"]["limits"] = {
@@ -394,7 +395,7 @@ def test_get_min_pair_stake_amount(mocker, default_conf) -> None:
PropertyMock(return_value=markets)
)
result = exchange.get_min_pair_stake_amount('ETH/BTC', 2, stoploss)
assert result == max(2, 2 * 2) / 0.9
assert isclose(result, max(2, 2 * 2) * 1.1)
# min amount and cost are set (amount is minial)
markets["ETH/BTC"]["limits"] = {
@@ -406,7 +407,14 @@ def test_get_min_pair_stake_amount(mocker, default_conf) -> None:
PropertyMock(return_value=markets)
)
result = exchange.get_min_pair_stake_amount('ETH/BTC', 2, stoploss)
assert result == max(8, 2 * 2) / 0.9
assert isclose(result, max(8, 2 * 2) * 1.1)
result = exchange.get_min_pair_stake_amount('ETH/BTC', 2, -0.4)
assert isclose(result, max(8, 2 * 2) * 1.45)
# Really big stoploss
result = exchange.get_min_pair_stake_amount('ETH/BTC', 2, -1)
assert isclose(result, max(8, 2 * 2) * 1.5)
def test_get_min_pair_stake_amount_real_data(mocker, default_conf) -> None:
@@ -424,7 +432,7 @@ def test_get_min_pair_stake_amount_real_data(mocker, default_conf) -> None:
PropertyMock(return_value=markets)
)
result = exchange.get_min_pair_stake_amount('ETH/BTC', 0.020405, stoploss)
assert round(result, 8) == round(max(0.0001, 0.001 * 0.020405) / 0.9, 8)
assert round(result, 8) == round(max(0.0001, 0.001 * 0.020405) * 1.1, 8)
def test_set_sandbox(default_conf, mocker):