rustpy 0.3.0

Bindings of Rust programming language primitives.
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81

from contextlib import suppress
from typing import Tuple

from hypothesis import given

from tests.utils import (Integer,
                         equivalence)
from . import strategies


@given(strategies.signed_integers)
def test_basic(integer: Integer) -> None:
    with suppress(OverflowError):
        result = integer.abs()

        assert isinstance(result, type(integer))


@given(strategies.signed_integers)
def test_idempotence(integer: Integer) -> None:
    with suppress(OverflowError):
        result = integer.abs()

        assert result == result.abs()


@given(strategies.signed_integers_with_zeros)
def test_positive_definiteness(integer_with_zero: Integer) -> None:
    integer, zero = integer_with_zero

    with suppress(OverflowError):
        result = integer.abs()

        assert equivalence(result == zero, integer == zero)


@given(strategies.signed_integers)
def test_evenness(integer: Integer) -> None:
    with suppress(OverflowError):
        result = integer.abs()

        assert result == (-integer).abs()


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

    with suppress(OverflowError):
        result = (first * second).abs()

        assert result == first.abs() * second.abs()


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

    with suppress(OverflowError):
        result = (first + second).abs()

        assert result <= first.abs() + second.abs()


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

    with suppress(OverflowError):
        assert (first * second).abs() == first.abs() * second.abs()


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

    with suppress(OverflowError):
        result = (first / second).abs()
        alternative = first.abs() / second.abs()

        assert result == alternative