mirror of
https://github.com/MikeMcl/decimal.js.git
synced 2024-09-30 23:40:47 +00:00
126 lines
3.1 KiB
Python
126 lines
3.1 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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mp.prec = 500
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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 to_precision(x, precision=14):
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getcontext().prec = precision
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return Decimal(str(x)) * Decimal("1.0")
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decimal_fixed_precision = 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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decimal_positive = tuples(
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decimals(
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allow_nan=False, allow_infinity=False, min_value=1e-13, 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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@given(decimal_fixed_precision)
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@settings(max_examples=100)
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def test_tangent(x):
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y = to_precision(mp.tan(x))
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z = get_decimal("tan", [str(x)], {"precision": 14})
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assert y == z
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@given(decimal_fixed_precision)
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@settings(max_examples=100)
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def test_cosine(x):
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y = to_precision(mp.cos(x))
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z = get_decimal("cos", [str(x)], {"precision": 14})
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assert y == z
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@given(decimal_fixed_precision)
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@settings(max_examples=100)
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def test_sine(x):
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y = to_precision(mp.sin(x))
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z = get_decimal("sin", [str(x)], {"precision": 14})
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assert y == z
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@given(decimal_positive)
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@settings(max_examples=100)
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def test_log(x):
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y = to_precision(mp.log10(x))
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z = get_decimal("log", [str(x)], {"precision": 14})
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assert y == z
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inverse_trig_strat = 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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@given(inverse_trig_strat)
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@settings(max_examples=100)
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def test_acos(x):
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y = to_precision(mp.acos(x))
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z = get_decimal("acos", [str(x)], {"precision": 14})
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assert y == z
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@given(inverse_trig_strat)
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@settings(max_examples=100)
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def test_asin(x):
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y = to_precision(mp.asin(x))
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z = get_decimal("asin", [str(x)], {"precision": 14})
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assert y == z
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@given(decimal_fixed_precision)
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@settings(max_examples=100)
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def test_atan(x):
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y = to_precision(mp.atan(x))
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z = get_decimal("atan", [str(x)], {"precision": 14})
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assert y == z
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@given(decimal_fixed_precision)
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@settings(max_examples=10)
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def test_cosh(x):
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y = to_precision(mp.cosh(x))
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z = get_decimal("cosh", [str(x)], {"precision": 14})
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assert y == z
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@given(decimal_fixed_precision)
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@settings(max_examples=4)
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def test_sinh(x):
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y = to_precision(mp.sinh(x))
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z = get_decimal("sinh", [str(x)], {"precision": 14})
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assert y == z
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@given(decimal_fixed_precision)
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@settings(max_examples=4)
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def test_tanh(x):
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y = to_precision(mp.tanh(x))
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z = get_decimal("tanh", [str(x)], {"precision": 14})
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assert y == z
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