rustpy 0.3.0

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

from hypothesis import given

from rustpy.result import Result
from rustpy.primitive import bool_
from tests.utils import (equivalence,
                         implication)
from . import strategies


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

    result = first <= second

    assert isinstance(result, bool_)


@given(strategies.comparable_results)
def test_reflexivity(result: Result) -> None:
    assert result <= result


@given(strategies.comparable_results_pairs)
def test_antisymmetry(pair: Tuple[Result, Result]) -> None:
    first, second = pair

    assert equivalence(first <= second <= first, first == second)


@given(strategies.comparable_results_triplets)
def test_transitivity(triplet: Tuple[Result, Result, Result]) -> None:
    first, second, third = triplet

    assert implication(first <= second <= third, first <= third)


@given(strategies.comparable_results_pairs)
def test_equivalents(pair: Tuple[Result, Result]) -> None:
    first, second = pair

    result = first <= second

    assert equivalence(result, second >= first)
    assert equivalence(result, first < second or first == second)
    assert equivalence(result, second > first or first == second)