rustpy 0.3.0

Bindings of Rust programming language primitives.
Documentation 
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from contextlib import suppress
from typing import Tuple

import pytest
from hypothesis import given

from tests.utils import Integer
from . import strategies


@given(strategies.integers_pairs)
def test_basic(pair: Tuple[Integer, Integer]) -> None:
    first, second = pair

    with suppress(OverflowError):
        result = first * second

        assert isinstance(result, type(first))


@given(strategies.integers_pairs)
def test_commutativity(pair: Tuple[Integer, Integer]) -> None:
    first, second = pair

    try:
        result = first * second
    except OverflowError:
        with pytest.raises(OverflowError):
            second * first
    else:
        assert result == second * first


@given(strategies.integers_triplets)
def test_associativity(triplet: Tuple[Integer, Integer, Integer]) -> None:
    first, second, third = triplet

    with suppress(OverflowError):
        result = (first * second) * third

        assert result == first * (second * third)


@given(strategies.integers_with_zeros)
def test_absorbing_element(integer_with_zero: Tuple[Integer, Integer]) -> None:
    integer, zero = integer_with_zero

    assert integer * zero == zero == zero * integer


@given(strategies.integers_with_ones)
def test_neutral_element(integer_with_one: Tuple[Integer, Integer]) -> None:
    integer, one = integer_with_one

    assert integer * one == integer == one * integer