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'