rustpy 0.3.0

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

from hypothesis import given

from tests.utils import (Float,
                         Integer,
                         Numeric)
from . import strategies


@given(strategies.integers, strategies.numeric_types)
def test_basic(integer: Integer, numeric_type: Type[Numeric]) -> None:
    result = integer.as_(numeric_type)

    assert isinstance(result, numeric_type)


@given(strategies.integers, strategies.float_types)
def test_float_type(integer: Integer, float_type: Type[Float]) -> None:
    result = integer.as_(float_type)

    assert not result.is_nan()
    assert result.trunc() == result


@given(strategies.integers, strategies.integer_types)
def test_integer_type(integer: Integer, integer_type: Type[Integer]) -> None:
    result = integer.as_(integer_type)

    integer_bytes = integer.to_le_bytes()
    result_bytes = result.to_le_bytes()
    assert (result_bytes[:min(len(integer_bytes), len(result_bytes))]
            == integer_bytes[:min(len(integer_bytes), len(result_bytes))])