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ccxt_with_mt5/ccxt/test/base/test_decimal_to_precision.py
lz_db 0fab423a18 add
2025-11-16 12:31:03 +08:00

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import os
import sys
root = os.path.dirname(os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__)))))
sys.path.append(root)
# ----------------------------------------------------------------------------
# PLEASE DO NOT EDIT THIS FILE, IT IS GENERATED AND WILL BE OVERWRITTEN:
# https://github.com/ccxt/ccxt/blob/master/CONTRIBUTING.md#how-to-contribute-code
# ----------------------------------------------------------------------------
# -*- coding: utf-8 -*-
from ccxt.base.decimal_to_precision import DECIMAL_PLACES # noqa E402
from ccxt.base.decimal_to_precision import TICK_SIZE # noqa E402
from ccxt.base.decimal_to_precision import NO_PADDING # noqa E402
from ccxt.base.decimal_to_precision import TRUNCATE # noqa E402
from ccxt.base.decimal_to_precision import ROUND # noqa E402
from ccxt.base.decimal_to_precision import SIGNIFICANT_DIGITS # noqa E402
from ccxt.base.decimal_to_precision import PAD_WITH_ZERO # noqa E402
from ccxt.base.decimal_to_precision import decimal_to_precision # noqa E402
import ccxt # noqa: F402
def test_decimal_to_precision():
exchange = ccxt.Exchange({
'id': 'regirock',
})
# ----------------------------------------------------------------------------
# Truncate To N Digits After Dot
assert exchange.decimal_to_precision('12.3456000', TRUNCATE, 100, DECIMAL_PLACES) == '12.3456'
assert exchange.decimal_to_precision('12.3456', TRUNCATE, 100, DECIMAL_PLACES) == '12.3456'
assert exchange.decimal_to_precision('12.3456', TRUNCATE, 4, DECIMAL_PLACES) == '12.3456'
assert exchange.decimal_to_precision('12.3456', TRUNCATE, 3, DECIMAL_PLACES) == '12.345'
assert exchange.decimal_to_precision('12.3456', TRUNCATE, 2, DECIMAL_PLACES) == '12.34'
assert exchange.decimal_to_precision('12.3456', TRUNCATE, 1, DECIMAL_PLACES) == '12.3'
assert exchange.decimal_to_precision('12.3456', TRUNCATE, 0, DECIMAL_PLACES) == '12'
# ['12.3456', TRUNCATE, -1, DECIMAL_PLACES, '10'], # not yet supported
# ['123.456', TRUNCATE, -2, DECIMAL_PLACES, '120'], # not yet supported
# ['123.456', TRUNCATE, -3, DECIMAL_PLACES, '100'], # not yet supported
assert exchange.decimal_to_precision('0.0000001', TRUNCATE, 8, DECIMAL_PLACES) == '0.0000001'
assert exchange.decimal_to_precision('0.00000001', TRUNCATE, 8, DECIMAL_PLACES) == '0.00000001'
assert exchange.decimal_to_precision('0.000000000', TRUNCATE, 9, DECIMAL_PLACES, PAD_WITH_ZERO) == '0.000000000'
assert exchange.decimal_to_precision('0.000000001', TRUNCATE, 9, DECIMAL_PLACES, PAD_WITH_ZERO) == '0.000000001'
assert exchange.decimal_to_precision('12.3456', TRUNCATE, -1, DECIMAL_PLACES) == '10'
assert exchange.decimal_to_precision('123.456', TRUNCATE, -1, DECIMAL_PLACES) == '120'
assert exchange.decimal_to_precision('123.456', TRUNCATE, -2, DECIMAL_PLACES) == '100'
assert exchange.decimal_to_precision('9.99999', TRUNCATE, -1, DECIMAL_PLACES) == '0'
assert exchange.decimal_to_precision('99.9999', TRUNCATE, -1, DECIMAL_PLACES) == '90'
assert exchange.decimal_to_precision('99.9999', TRUNCATE, -2, DECIMAL_PLACES) == '0'
assert exchange.decimal_to_precision('0', TRUNCATE, 0, DECIMAL_PLACES) == '0'
assert exchange.decimal_to_precision('-0.9', TRUNCATE, 0, DECIMAL_PLACES) == '0'
# ----------------------------------------------------------------------------
# Truncate To N Significant Digits
assert exchange.decimal_to_precision('0.000123456700', TRUNCATE, 100, SIGNIFICANT_DIGITS) == '0.0001234567'
assert exchange.decimal_to_precision('0.0001234567', TRUNCATE, 100, SIGNIFICANT_DIGITS) == '0.0001234567'
assert exchange.decimal_to_precision('0.0001234567', TRUNCATE, 7, SIGNIFICANT_DIGITS) == '0.0001234567'
assert exchange.decimal_to_precision('0.000123456', TRUNCATE, 6, SIGNIFICANT_DIGITS) == '0.000123456'
assert exchange.decimal_to_precision('0.000123456', TRUNCATE, 5, SIGNIFICANT_DIGITS) == '0.00012345'
assert exchange.decimal_to_precision('0.000123456', TRUNCATE, 2, SIGNIFICANT_DIGITS) == '0.00012'
assert exchange.decimal_to_precision('0.000123456', TRUNCATE, 1, SIGNIFICANT_DIGITS) == '0.0001'
assert exchange.decimal_to_precision('123.0000987654', TRUNCATE, 10, SIGNIFICANT_DIGITS, PAD_WITH_ZERO) == '123.0000987'
assert exchange.decimal_to_precision('123.0000987654', TRUNCATE, 8, SIGNIFICANT_DIGITS) == '123.00009'
assert exchange.decimal_to_precision('123.0000987654', TRUNCATE, 7, SIGNIFICANT_DIGITS, PAD_WITH_ZERO) == '123.0000'
assert exchange.decimal_to_precision('123.0000987654', TRUNCATE, 6, SIGNIFICANT_DIGITS) == '123'
assert exchange.decimal_to_precision('123.0000987654', TRUNCATE, 5, SIGNIFICANT_DIGITS, PAD_WITH_ZERO) == '123.00'
assert exchange.decimal_to_precision('123.0000987654', TRUNCATE, 4, SIGNIFICANT_DIGITS) == '123'
assert exchange.decimal_to_precision('123.0000987654', TRUNCATE, 4, SIGNIFICANT_DIGITS, PAD_WITH_ZERO) == '123.0'
assert exchange.decimal_to_precision('123.0000987654', TRUNCATE, 3, SIGNIFICANT_DIGITS, PAD_WITH_ZERO) == '123'
assert exchange.decimal_to_precision('123.0000987654', TRUNCATE, 2, SIGNIFICANT_DIGITS) == '120'
assert exchange.decimal_to_precision('123.0000987654', TRUNCATE, 1, SIGNIFICANT_DIGITS) == '100'
assert exchange.decimal_to_precision('123.0000987654', TRUNCATE, 1, SIGNIFICANT_DIGITS, PAD_WITH_ZERO) == '100'
assert exchange.decimal_to_precision('1234', TRUNCATE, 5, SIGNIFICANT_DIGITS) == '1234'
assert exchange.decimal_to_precision('1234', TRUNCATE, 5, SIGNIFICANT_DIGITS, PAD_WITH_ZERO) == '1234.0'
assert exchange.decimal_to_precision('1234', TRUNCATE, 4, SIGNIFICANT_DIGITS) == '1234'
assert exchange.decimal_to_precision('1234', TRUNCATE, 4, SIGNIFICANT_DIGITS, PAD_WITH_ZERO) == '1234'
assert exchange.decimal_to_precision('1234.69', TRUNCATE, 0, SIGNIFICANT_DIGITS) == '0'
assert exchange.decimal_to_precision('1234.69', TRUNCATE, 0, SIGNIFICANT_DIGITS, PAD_WITH_ZERO) == '0'
# ----------------------------------------------------------------------------
# Round To N Digits After Dot
assert exchange.decimal_to_precision('12.3456000', ROUND, 100, DECIMAL_PLACES) == '12.3456'
assert exchange.decimal_to_precision('12.3456', ROUND, 100, DECIMAL_PLACES) == '12.3456'
assert exchange.decimal_to_precision('12.3456', ROUND, 4, DECIMAL_PLACES) == '12.3456'
assert exchange.decimal_to_precision('12.3456', ROUND, 3, DECIMAL_PLACES) == '12.346'
assert exchange.decimal_to_precision('12.3456', ROUND, 2, DECIMAL_PLACES) == '12.35'
assert exchange.decimal_to_precision('12.3456', ROUND, 1, DECIMAL_PLACES) == '12.3'
assert exchange.decimal_to_precision('12.3456', ROUND, 0, DECIMAL_PLACES) == '12'
# todo:
# ['9.999', ROUND, 3, DECIMAL_PLACES, NO_PADDING, '9.999'],
# ['9.999', ROUND, 2, DECIMAL_PLACES, NO_PADDING, '10'],
# ['9.999', ROUND, 2, DECIMAL_PLACES, PAD_WITH_ZERO, '10.00'],
# ['99.999', ROUND, 2, DECIMAL_PLACES, PAD_WITH_ZERO, '100.00'],
# ['-99.999', ROUND, 2, DECIMAL_PLACES, PAD_WITH_ZERO, '-100.00'],
# ['12.3456', ROUND, -1, DECIMAL_PLACES, NO_PADDING, '10'], # not yet supported
# ['123.456', ROUND, -1, DECIMAL_PLACES, NO_PADDING, '120'], # not yet supported
# ['123.456', ROUND, -2, DECIMAL_PLACES, NO_PADDING, '100'], # not yet supported
# a problematic case in PHP
assert exchange.decimal_to_precision('10000', ROUND, 6, DECIMAL_PLACES) == '10000'
assert exchange.decimal_to_precision('0.00003186', ROUND, 8, DECIMAL_PLACES) == '0.00003186'
assert exchange.decimal_to_precision('12.3456', ROUND, -1, DECIMAL_PLACES) == '10'
assert exchange.decimal_to_precision('123.456', ROUND, -1, DECIMAL_PLACES) == '120'
assert exchange.decimal_to_precision('123.456', ROUND, -2, DECIMAL_PLACES) == '100'
assert exchange.decimal_to_precision('9.99999', ROUND, -1, DECIMAL_PLACES) == '10'
assert exchange.decimal_to_precision('99.9999', ROUND, -1, DECIMAL_PLACES) == '100'
assert exchange.decimal_to_precision('99.9999', ROUND, -2, DECIMAL_PLACES) == '100'
assert exchange.decimal_to_precision('9.999', ROUND, 3, DECIMAL_PLACES) == '9.999'
assert exchange.decimal_to_precision('9.999', ROUND, 2, DECIMAL_PLACES) == '10'
assert exchange.decimal_to_precision('9.999', ROUND, 2, DECIMAL_PLACES, PAD_WITH_ZERO) == '10.00'
assert exchange.decimal_to_precision('99.999', ROUND, 2, DECIMAL_PLACES, PAD_WITH_ZERO) == '100.00'
assert exchange.decimal_to_precision('-99.999', ROUND, 2, DECIMAL_PLACES, PAD_WITH_ZERO) == '-100.00'
# ----------------------------------------------------------------------------
# Round To N Significant Digits
assert exchange.decimal_to_precision('0.000123456700', ROUND, 100, SIGNIFICANT_DIGITS) == '0.0001234567'
assert exchange.decimal_to_precision('0.0001234567', ROUND, 100, SIGNIFICANT_DIGITS) == '0.0001234567'
assert exchange.decimal_to_precision('0.0001234567', ROUND, 7, SIGNIFICANT_DIGITS) == '0.0001234567'
assert exchange.decimal_to_precision('0.000123456', ROUND, 6, SIGNIFICANT_DIGITS) == '0.000123456'
assert exchange.decimal_to_precision('0.000123456', ROUND, 5, SIGNIFICANT_DIGITS) == '0.00012346'
assert exchange.decimal_to_precision('0.000123456', ROUND, 4, SIGNIFICANT_DIGITS) == '0.0001235'
assert exchange.decimal_to_precision('0.00012', ROUND, 2, SIGNIFICANT_DIGITS) == '0.00012'
assert exchange.decimal_to_precision('0.0001', ROUND, 1, SIGNIFICANT_DIGITS) == '0.0001'
assert exchange.decimal_to_precision('123.0000987654', ROUND, 7, SIGNIFICANT_DIGITS) == '123.0001'
assert exchange.decimal_to_precision('123.0000987654', ROUND, 6, SIGNIFICANT_DIGITS) == '123'
assert exchange.decimal_to_precision('0.00098765', ROUND, 2, SIGNIFICANT_DIGITS) == '0.00099'
assert exchange.decimal_to_precision('0.00098765', ROUND, 2, SIGNIFICANT_DIGITS, PAD_WITH_ZERO) == '0.00099'
assert exchange.decimal_to_precision('0.00098765', ROUND, 1, SIGNIFICANT_DIGITS) == '0.001'
assert exchange.decimal_to_precision('0.00098765', ROUND, 10, SIGNIFICANT_DIGITS, PAD_WITH_ZERO) == '0.0009876500000'
assert exchange.decimal_to_precision('0.098765', ROUND, 1, SIGNIFICANT_DIGITS, PAD_WITH_ZERO) == '0.1'
assert exchange.decimal_to_precision('0', ROUND, 0, SIGNIFICANT_DIGITS) == '0'
assert exchange.decimal_to_precision('-0.123', ROUND, 0, SIGNIFICANT_DIGITS) == '0'
assert exchange.decimal_to_precision('0.00000044', ROUND, 5, SIGNIFICANT_DIGITS) == '0.00000044'
assert exchange.decimal_to_precision('0.123456', ROUND, 5, SIGNIFICANT_DIGITS) == '0.12346'
assert exchange.decimal_to_precision('0.123456', ROUND, 6, SIGNIFICANT_DIGITS) == '0.123456'
assert exchange.decimal_to_precision('0.123456', ROUND, 7, SIGNIFICANT_DIGITS) == '0.123456'
assert exchange.decimal_to_precision('1.234567', ROUND, 5, SIGNIFICANT_DIGITS) == '1.2346'
assert exchange.decimal_to_precision('1.234567', ROUND, 6, SIGNIFICANT_DIGITS) == '1.23457'
assert exchange.decimal_to_precision('1.234567', ROUND, 7, SIGNIFICANT_DIGITS) == '1.234567'
assert exchange.decimal_to_precision('12.34567', ROUND, 5, SIGNIFICANT_DIGITS) == '12.346'
assert exchange.decimal_to_precision('12.34567', ROUND, 6, SIGNIFICANT_DIGITS) == '12.3457'
assert exchange.decimal_to_precision('12.34567', ROUND, 7, SIGNIFICANT_DIGITS) == '12.34567'
# above 1.0
assert exchange.decimal_to_precision('1114.5', ROUND, 3, SIGNIFICANT_DIGITS) == '1110'
assert exchange.decimal_to_precision('1115.5', ROUND, 3, SIGNIFICANT_DIGITS) == '1120'
assert exchange.decimal_to_precision('1114.5', ROUND, 4, SIGNIFICANT_DIGITS) == '1115'
assert exchange.decimal_to_precision('1114.5', ROUND, 5, SIGNIFICANT_DIGITS) == '1114.5'
assert exchange.decimal_to_precision('1115.5', ROUND, 5, SIGNIFICANT_DIGITS) == '1115.5'
# ----------------------------------------------------------------------------
# Round To Tick Size
assert exchange.decimal_to_precision('0.000123456700', ROUND, 0.00012, TICK_SIZE) == '0.00012'
assert exchange.decimal_to_precision('0.0001234567', ROUND, 0.00013, TICK_SIZE) == '0.00013'
assert exchange.decimal_to_precision('0.0001234567', TRUNCATE, 0.00013, TICK_SIZE) == '0'
assert exchange.decimal_to_precision('101.000123456700', ROUND, 100, TICK_SIZE) == '100'
assert exchange.decimal_to_precision('0.000123456700', ROUND, 100, TICK_SIZE) == '0'
assert exchange.decimal_to_precision('165', TRUNCATE, 110, TICK_SIZE) == '110'
assert exchange.decimal_to_precision('3210', TRUNCATE, 1110, TICK_SIZE) == '2220'
assert exchange.decimal_to_precision('165', ROUND, 110, TICK_SIZE) == '220'
assert exchange.decimal_to_precision('0.000123456789', ROUND, 1.2e-7, TICK_SIZE) == '0.00012348'
assert exchange.decimal_to_precision('0.000123456789', TRUNCATE, 1.2e-7, TICK_SIZE) == '0.00012336'
assert exchange.decimal_to_precision('0.000273398', ROUND, 1e-7, TICK_SIZE) == '0.0002734'
assert exchange.decimal_to_precision('0.00005714', TRUNCATE, 1e-8, TICK_SIZE) == '0.00005714'
# this line causes problems in JS, fix with Precise
# assert (exchange.decimalToPrecision ('0.0000571495257361', TRUNCATE, 0.00000001, TICK_SIZE) === '0.00005714');
assert exchange.decimal_to_precision('0.01', ROUND, 0.0001, TICK_SIZE, PAD_WITH_ZERO) == '0.0100'
assert exchange.decimal_to_precision('0.01', TRUNCATE, 0.0001, TICK_SIZE, PAD_WITH_ZERO) == '0.0100'
assert exchange.decimal_to_precision('-0.000123456789', ROUND, 1.2e-7, TICK_SIZE) == '-0.00012348'
assert exchange.decimal_to_precision('-0.000123456789', TRUNCATE, 1.2e-7, TICK_SIZE) == '-0.00012336'
assert exchange.decimal_to_precision('-165', TRUNCATE, 110, TICK_SIZE) == '-110'
assert exchange.decimal_to_precision('-165', ROUND, 110, TICK_SIZE) == '-220'
assert exchange.decimal_to_precision('-1650', TRUNCATE, 1100, TICK_SIZE) == '-1100'
assert exchange.decimal_to_precision('-1650', ROUND, 1100, TICK_SIZE) == '-2200'
assert exchange.decimal_to_precision('0.0006', TRUNCATE, 0.0001, TICK_SIZE) == '0.0006'
assert exchange.decimal_to_precision('-0.0006', TRUNCATE, 0.0001, TICK_SIZE) == '-0.0006'
assert exchange.decimal_to_precision('0.6', TRUNCATE, 0.2, TICK_SIZE) == '0.6'
assert exchange.decimal_to_precision('-0.6', TRUNCATE, 0.2, TICK_SIZE) == '-0.6'
assert exchange.decimal_to_precision('1.2', ROUND, 0.4, TICK_SIZE) == '1.2'
assert exchange.decimal_to_precision('-1.2', ROUND, 0.4, TICK_SIZE) == '-1.2'
assert exchange.decimal_to_precision('1.2', ROUND, 0.02, TICK_SIZE) == '1.2'
assert exchange.decimal_to_precision('-1.2', ROUND, 0.02, TICK_SIZE) == '-1.2'
assert exchange.decimal_to_precision('44', ROUND, 4.4, TICK_SIZE) == '44'
assert exchange.decimal_to_precision('-44', ROUND, 4.4, TICK_SIZE) == '-44'
assert exchange.decimal_to_precision('44.00000001', ROUND, 4.4, TICK_SIZE) == '44'
assert exchange.decimal_to_precision('-44.00000001', ROUND, 4.4, TICK_SIZE) == '-44'
# https://github.com/ccxt/ccxt/issues/6731
assert exchange.decimal_to_precision('20', TRUNCATE, 1e-8, TICK_SIZE) == '20'
assert exchange.decimal_to_precision('0.000123456789', TRUNCATE, 1e-8, TICK_SIZE) == '0.00012345'
# ----------------------------------------------------------------------------
# Negative Numbers
assert exchange.decimal_to_precision('-0.123456', TRUNCATE, 5, DECIMAL_PLACES) == '-0.12345'
assert exchange.decimal_to_precision('-0.123456', ROUND, 5, DECIMAL_PLACES) == '-0.12346'
# ----------------------------------------------------------------------------
# without dot / trailing dot
assert exchange.decimal_to_precision('123', TRUNCATE, 0) == '123'
assert exchange.decimal_to_precision('123', TRUNCATE, 5, DECIMAL_PLACES) == '123'
assert exchange.decimal_to_precision('123', TRUNCATE, 5, DECIMAL_PLACES, PAD_WITH_ZERO) == '123.00000'
assert exchange.decimal_to_precision('123.', TRUNCATE, 0, DECIMAL_PLACES) == '123'
assert exchange.decimal_to_precision('123.', TRUNCATE, 5, DECIMAL_PLACES, PAD_WITH_ZERO) == '123.00000'
assert exchange.decimal_to_precision('0.', TRUNCATE, 0) == '0'
assert exchange.decimal_to_precision('0.', TRUNCATE, 5, DECIMAL_PLACES, PAD_WITH_ZERO) == '0.00000'
# ----------------------------------------------------------------------------
# rounding for equidistant digits
assert exchange.decimal_to_precision('1.44', ROUND, 1, DECIMAL_PLACES) == '1.4'
assert exchange.decimal_to_precision('1.45', ROUND, 1, DECIMAL_PLACES) == '1.5'
assert exchange.decimal_to_precision('1.45', ROUND, 0, DECIMAL_PLACES) == '1' # not 2
# ----------------------------------------------------------------------------
# negative precision only implemented so far in python
# pretty useless for decimal applications as anything |x| < 5 === 0
# NO_PADDING and PAD_WITH_ZERO are ignored
assert exchange.decimal_to_precision('5', ROUND, -1, DECIMAL_PLACES) == '10'
assert exchange.decimal_to_precision('4.999', ROUND, -1, DECIMAL_PLACES) == '0'
assert exchange.decimal_to_precision('0.0431531423', ROUND, -1, DECIMAL_PLACES) == '0'
assert exchange.decimal_to_precision('-69.3', ROUND, -1, DECIMAL_PLACES) == '-70'
assert exchange.decimal_to_precision('5001', ROUND, -4, DECIMAL_PLACES) == '10000'
assert exchange.decimal_to_precision('4999.999', ROUND, -4, DECIMAL_PLACES) == '0'
assert exchange.decimal_to_precision('69.3', TRUNCATE, -2, DECIMAL_PLACES) == '0'
assert exchange.decimal_to_precision('-69.3', TRUNCATE, -2, DECIMAL_PLACES) == '0'
assert exchange.decimal_to_precision('69.3', TRUNCATE, -1, SIGNIFICANT_DIGITS) == '60'
assert exchange.decimal_to_precision('-69.3', TRUNCATE, -1, SIGNIFICANT_DIGITS) == '-60'
assert exchange.decimal_to_precision('69.3', TRUNCATE, -2, SIGNIFICANT_DIGITS) == '0'
assert exchange.decimal_to_precision('1602000000000000000000', TRUNCATE, 3, SIGNIFICANT_DIGITS) == '1600000000000000000000'
# ----------------------------------------------------------------------------
# stringified precision
assert exchange.decimal_to_precision('-0.000123456789', ROUND, '0.00000012', TICK_SIZE) == '-0.00012348'
assert exchange.decimal_to_precision('-0.000123456789', TRUNCATE, '0.00000012', TICK_SIZE) == '-0.00012336'
assert exchange.decimal_to_precision('-165', TRUNCATE, '110', TICK_SIZE) == '-110'
assert exchange.decimal_to_precision('-165', ROUND, '110', TICK_SIZE) == '-220'
# ----------------------------------------------------------------------------
# testDecimalToPrecisionErrorHandling (todo)
#
# throws (() =>
# decimalToPrecision ('123456.789', TRUNCATE, -2, DECIMAL_PLACES),
# 'negative precision is not yet supported')
#
# throws (() =>
# decimalToPrecision ('foo'),
# "invalid number (contains an illegal character 'f')")
#
# throws (() =>
# decimalToPrecision ('0.01', TRUNCATE, -1, TICK_SIZE),
# "TICK_SIZE cant be used with negative numPrecisionDigits")
# ----------------------------------------------------------------------------
# Additional Edge Cases
# Zero handling variations
assert exchange.decimal_to_precision('0.0', TRUNCATE, 2, DECIMAL_PLACES) == '0'
assert exchange.decimal_to_precision('0.00', ROUND, 3, DECIMAL_PLACES, PAD_WITH_ZERO) == '0.000'
assert exchange.decimal_to_precision('-0.0', TRUNCATE, 2, DECIMAL_PLACES) == '0'
assert exchange.decimal_to_precision('-0.00', ROUND, 1, DECIMAL_PLACES) == '0'
# Very small numbers close to zero
assert exchange.decimal_to_precision('0.0000000001', TRUNCATE, 8, DECIMAL_PLACES) == '0'
assert exchange.decimal_to_precision('0.0000000001', ROUND, 8, DECIMAL_PLACES) == '0'
assert exchange.decimal_to_precision('0.0000000001', TRUNCATE, 10, DECIMAL_PLACES) == '0.0000000001'
assert exchange.decimal_to_precision('0.00000000009', ROUND, 10, DECIMAL_PLACES) == '0.0000000001'
assert exchange.decimal_to_precision('0.00000000015', ROUND, 10, DECIMAL_PLACES) == '0.0000000002'
# Very large numbers
assert exchange.decimal_to_precision('99999999999999.99999', TRUNCATE, 2, DECIMAL_PLACES) == '99999999999999.99'
assert exchange.decimal_to_precision('99999999999999.99999', ROUND, 2, DECIMAL_PLACES) == '100000000000000'
assert exchange.decimal_to_precision('123456789012345', TRUNCATE, 3, SIGNIFICANT_DIGITS) == '123000000000000'
assert exchange.decimal_to_precision('123456789012345', ROUND, 3, SIGNIFICANT_DIGITS) == '123000000000000'
# Numbers with leading zeros
assert exchange.decimal_to_precision('000123.456', TRUNCATE, 2, DECIMAL_PLACES) == '123.45'
assert exchange.decimal_to_precision('000123.456', ROUND, 2, DECIMAL_PLACES) == '123.46'
assert exchange.decimal_to_precision('0000.123', TRUNCATE, 2, DECIMAL_PLACES) == '0.12'
# Boundary rounding cases (exactly at 0.5)
assert exchange.decimal_to_precision('1.5', ROUND, 0, DECIMAL_PLACES) == '2'
assert exchange.decimal_to_precision('2.5', ROUND, 0, DECIMAL_PLACES) == '3'
assert exchange.decimal_to_precision('-1.5', ROUND, 0, DECIMAL_PLACES) == '-2'
assert exchange.decimal_to_precision('-2.5', ROUND, 0, DECIMAL_PLACES) == '-3'
assert exchange.decimal_to_precision('1.25', ROUND, 1, DECIMAL_PLACES) == '1.3'
assert exchange.decimal_to_precision('1.35', ROUND, 1, DECIMAL_PLACES) == '1.4'
# Carry-over in rounding (cascading effects)
assert exchange.decimal_to_precision('9.999999', ROUND, 0, DECIMAL_PLACES) == '10'
assert exchange.decimal_to_precision('99.999999', ROUND, 0, DECIMAL_PLACES) == '100'
assert exchange.decimal_to_precision('999.999999', ROUND, 0, DECIMAL_PLACES) == '1000'
assert exchange.decimal_to_precision('9.999999', ROUND, 1, DECIMAL_PLACES) == '10'
assert exchange.decimal_to_precision('9.999999', ROUND, 2, DECIMAL_PLACES) == '10'
assert exchange.decimal_to_precision('-9.999999', ROUND, 0, DECIMAL_PLACES) == '-10'
assert exchange.decimal_to_precision('-99.999999', ROUND, 0, DECIMAL_PLACES) == '-100'
# Edge cases for TICK_SIZE with very small ticks
assert exchange.decimal_to_precision('1.2345', ROUND, 0.0001, TICK_SIZE) == '1.2345'
assert exchange.decimal_to_precision('1.23456', ROUND, 0.0001, TICK_SIZE) == '1.2346'
assert exchange.decimal_to_precision('1.23454', ROUND, 0.0001, TICK_SIZE) == '1.2345'
assert exchange.decimal_to_precision('1.23444', TRUNCATE, 0.0001, TICK_SIZE) == '1.2344'
# TICK_SIZE with numbers smaller than tick
assert exchange.decimal_to_precision('0.05', ROUND, 0.1, TICK_SIZE) == '0.1'
assert exchange.decimal_to_precision('0.04', ROUND, 0.1, TICK_SIZE) == '0'
assert exchange.decimal_to_precision('0.04', TRUNCATE, 0.1, TICK_SIZE) == '0'
assert exchange.decimal_to_precision('0.049999', ROUND, 0.1, TICK_SIZE) == '0'
# SIGNIFICANT_DIGITS edge cases
assert exchange.decimal_to_precision('10000000', TRUNCATE, 1, SIGNIFICANT_DIGITS) == '10000000'
assert exchange.decimal_to_precision('10000001', TRUNCATE, 1, SIGNIFICANT_DIGITS) == '10000000'
assert exchange.decimal_to_precision('19999999', TRUNCATE, 1, SIGNIFICANT_DIGITS) == '10000000'
assert exchange.decimal_to_precision('19999999', ROUND, 1, SIGNIFICANT_DIGITS) == '20000000'
# Precision with PAD_WITH_ZERO edge cases
assert exchange.decimal_to_precision('1', TRUNCATE, 0, DECIMAL_PLACES, PAD_WITH_ZERO) == '1'
assert exchange.decimal_to_precision('1.0', TRUNCATE, 0, DECIMAL_PLACES, PAD_WITH_ZERO) == '1'
assert exchange.decimal_to_precision('1', TRUNCATE, 3, DECIMAL_PLACES, PAD_WITH_ZERO) == '1.000'
assert exchange.decimal_to_precision('1.1', TRUNCATE, 5, DECIMAL_PLACES, PAD_WITH_ZERO) == '1.10000'
# Numbers that are exactly multiples of precision
assert exchange.decimal_to_precision('1.2', TRUNCATE, 0.1, TICK_SIZE) == '1.2'
assert exchange.decimal_to_precision('1.2', ROUND, 0.1, TICK_SIZE) == '1.2'
assert exchange.decimal_to_precision('12', TRUNCATE, 4, TICK_SIZE) == '12'
assert exchange.decimal_to_precision('12', ROUND, 4, TICK_SIZE) == '12'
# Very high precision values
assert exchange.decimal_to_precision('1.123456789012345', TRUNCATE, 15, DECIMAL_PLACES) == '1.123456789012345'
assert exchange.decimal_to_precision('1.123456789012345', TRUNCATE, 10, DECIMAL_PLACES) == '1.123456789'
assert exchange.decimal_to_precision('1.123456789012345', TRUNCATE, 10, DECIMAL_PLACES, PAD_WITH_ZERO) == '1.1234567890'
assert exchange.decimal_to_precision('0.123456789012345', TRUNCATE, 15, SIGNIFICANT_DIGITS) == '0.123456789012345'
# Mixed large and small components
assert exchange.decimal_to_precision('1000000.000001', TRUNCATE, 6, DECIMAL_PLACES) == '1000000.000001'
assert exchange.decimal_to_precision('1000000.000001', TRUNCATE, 5, DECIMAL_PLACES, PAD_WITH_ZERO) == '1000000.00000'
assert exchange.decimal_to_precision('1000000.000001', ROUND, 5, DECIMAL_PLACES, PAD_WITH_ZERO) == '1000000.00000'
# Edge cases around 1.0 boundary for significant digits
assert exchange.decimal_to_precision('0.999999', ROUND, 1, SIGNIFICANT_DIGITS) == '1'
assert exchange.decimal_to_precision('0.999999', ROUND, 2, SIGNIFICANT_DIGITS, PAD_WITH_ZERO) == '1.0'
assert exchange.decimal_to_precision('0.999999', ROUND, 3, SIGNIFICANT_DIGITS, PAD_WITH_ZERO) == '1.00'
assert exchange.decimal_to_precision('0.999949', ROUND, 4, SIGNIFICANT_DIGITS) == '0.9999'
assert exchange.decimal_to_precision('0.999951', ROUND, 4, SIGNIFICANT_DIGITS, PAD_WITH_ZERO) == '1.000'
# ----------------------------------------------------------------------------
# https://github.com/ccxt/ccxt/issues/11765
assert exchange.decimal_to_precision('123456.12345678912', TRUNCATE, 1e-8, TICK_SIZE) == '123456.12345678'
# todo: not sure about below
assert exchange.decimal_to_precision('123456.12345674999', TRUNCATE, 5e-8, TICK_SIZE) == '123456.1234567'
assert exchange.decimal_to_precision('123456.12345674999', TRUNCATE, 5e-8, TICK_SIZE, PAD_WITH_ZERO) == '123456.12345670'
assert exchange.decimal_to_precision('123456.12345675001', TRUNCATE, 5e-8, TICK_SIZE) == '123456.12345675'
assert exchange.decimal_to_precision('123456.50000000001', TRUNCATE, 0.5, TICK_SIZE, PAD_WITH_ZERO) == '123456.5'
assert exchange.decimal_to_precision('123456.49999999999', TRUNCATE, 0.5, TICK_SIZE, PAD_WITH_ZERO) == '123456.0'
assert exchange.decimal_to_precision('123456.12345678912', TRUNCATE, '0.00000001', TICK_SIZE) == '123456.12345678'
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