mirror of
https://github.com/MikeMcl/decimal.js.git
synced 2024-10-27 20:34:12 +00:00
99 lines
2.6 KiB
Python
99 lines
2.6 KiB
Python
from decimal import Decimal, getcontext
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import json
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import subprocess
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import hypothesis
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from hypothesis import given, settings
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from hypothesis.strategies import decimals, integers, tuples
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from mpmath import mp
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import pytest
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mp.prec = 500
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getcontext().prec = 14
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node = subprocess.Popen(
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["node", "evaluate.mjs"], stdout=subprocess.PIPE, stdin=subprocess.PIPE
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)
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def get_decimal(func: str, args: list, config: dict):
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arg = json.dumps({"func": func, "args": args, "config": config}).encode() + b"\r"
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node.stdin.write(arg)
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node.stdin.flush()
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return Decimal(node.stdout.readline().strip().decode())
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def assert_matches(x, mpfunc, jsfunc=None):
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if jsfunc is None:
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jsfunc = mpfunc
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y = Decimal(str(getattr(mp, mpfunc)(x))) * Decimal("1.0")
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z = get_decimal(jsfunc, [str(x)], {"precision": 14})
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assert y == z
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@pytest.mark.parametrize("fn", "sin cos tan atan asinh".split())
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@given(
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x=tuples(
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decimals(
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allow_nan=False, allow_infinity=False, min_value=-1, max_value=1, places=14
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),
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integers(min_value=-99, max_value=99),
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).map(lambda tup: tup[0] * Decimal(10) ** tup[1])
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)
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@settings(max_examples=1000)
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def test_matches(x, fn):
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assert_matches(x, fn)
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@pytest.mark.parametrize("fn", "ln log10 sqrt".split())
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@given(
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x=tuples(
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decimals(
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allow_nan=False,
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allow_infinity=False,
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min_value=1e-13,
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max_value=1,
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places=14,
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),
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integers(min_value=-99, max_value=99),
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).map(lambda tup: tup[0] * Decimal(10) ** tup[1])
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)
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@settings(max_examples=1000)
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def test_positive_domain(x, fn):
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assert_matches(x, fn)
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@pytest.mark.parametrize("fn", "asin acos atanh".split())
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@given(
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x=decimals(
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allow_nan=False, allow_infinity=False, min_value=-1, max_value=1, places=14
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)
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)
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@settings(max_examples=1000)
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def test_inverse_trig(x, fn):
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assert_matches(x, fn)
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@pytest.mark.parametrize("fn", "sinh cosh tanh exp".split())
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@given(
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x=tuples(
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decimals(
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allow_nan=False, allow_infinity=False, min_value=-1, max_value=1, places=14
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),
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integers(min_value=-99, max_value=3),
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).map(lambda tup: tup[0] * Decimal(10) ** tup[1])
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)
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@settings(max_examples=1000)
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def test_small_domain(x, fn):
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assert_matches(x, fn)
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@given(
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x=tuples(
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decimals(
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allow_nan=False, allow_infinity=False, min_value=1, max_value=10, places=14
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),
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integers(min_value=0, max_value=99),
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).map(lambda tup: tup[0] * Decimal(10) ** tup[1])
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)
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@settings(max_examples=1000)
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def test_acosh(x):
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assert_matches(x, 'acosh') |