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add round_value incl. tests

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Matthias
2024-01-06 12:42:33 +01:00
parent b950128c4d
commit 65009373ee
2 changed files with 29 additions and 4 deletions
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17
freqtrade/misc.py
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@@ -27,6 +27,20 @@ def decimals_per_coin(coin: str):
return DECIMALS_PER_COIN.get(coin, DECIMAL_PER_COIN_FALLBACK)
def round_value(value: float, decimals: int, keep_trailing_zeros=False) -> str:
"""
Round value to given decimals
:param value: Value to be rounded
:param decimals: Number of decimals to round to
:param keep_trailing_zeros: Keep trailing zeros "222.200" vs. "222.2"
:return: Rounded value as string
"""
val = f"{value:.{decimals}f}"
if not keep_trailing_zeros:
val = val.rstrip('0').rstrip('.')
return val
def round_coin_value(
value: float, coin: str, show_coin_name=True, keep_trailing_zeros=False) -> str:
"""
@@ -38,8 +52,7 @@ def round_coin_value(
:return: Formatted / rounded value (with or without coin name)
"""
val = f"{value:.{decimals_per_coin(coin)}f}"
if not keep_trailing_zeros:
val = val.rstrip('0').rstrip('.')
val = round_value(value, decimals_per_coin(coin), keep_trailing_zeros)
if show_coin_name:
val = f"{val} {coin}"

16
tests/test_misc.py
View File

@@ -9,8 +9,8 @@ import pytest
from freqtrade.misc import (dataframe_to_json, decimals_per_coin, deep_merge_dicts, file_dump_json,
file_load_json, is_file_in_dir, json_to_dataframe, pair_to_filename,
parse_db_uri_for_logging, plural, round_coin_value, safe_value_fallback,
safe_value_fallback2)
parse_db_uri_for_logging, plural, round_coin_value, round_value,
safe_value_fallback, safe_value_fallback2)
def test_decimals_per_coin():
@@ -37,6 +37,18 @@ def test_round_coin_value():
assert round_coin_value(222.2, 'USDT', False, True) == '222.200'
def test_round_value():
assert round_value(222.222222, 3) == '222.222'
assert round_value(222.2, 3) == '222.2'
assert round_value(222.00, 3) == '222'
assert round_value(222.12745, 3) == '222.127'
assert round_value(0.1274512123, 8) == '0.12745121'
assert round_value(0.1274512123, 5) == '0.12745'
assert round_value(222.2, 3, True) == '222.200'
assert round_value(222.2, 0, True) == '222'
def test_file_dump_json(mocker) -> None:
file_open = mocker.patch('freqtrade.misc.Path.open', MagicMock())
json_dump = mocker.patch('rapidjson.dump', MagicMock())