rene 0.2.0

Computational geometry.
Documentation 
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from hypothesis import given

from rene.exact import Multisegment
from tests.utils import (
    equivalence,
    implication,
    reverse_multisegment,
    reverse_multisegment_coordinates,
    rotate_multisegment,
)

from . import strategies


@given(strategies.multisegments)
def test_reflexivity(multisegment: Multisegment) -> None:
    assert multisegment == multisegment


@given(strategies.multisegments, strategies.multisegments)
def test_symmetry(first: Multisegment, second: Multisegment) -> None:
    assert equivalence(first == second, second == first)


@given(
    strategies.multisegments,
    strategies.multisegments,
    strategies.multisegments,
)
def test_transitivity(
    first: Multisegment, second: Multisegment, third: Multisegment
) -> None:
    assert implication(first == second and second == third, first == third)


@given(strategies.multisegments, strategies.multisegments)
def test_alternatives(first: Multisegment, second: Multisegment) -> None:
    assert equivalence(first == second, first == second)


@given(strategies.multisegments, strategies.multisegments)
def test_reversals(first: Multisegment, second: Multisegment) -> None:
    assert equivalence(
        first == second,
        reverse_multisegment(first) == reverse_multisegment(second),
    )
    assert equivalence(
        first == second,
        (
            reverse_multisegment_coordinates(first)
            == reverse_multisegment_coordinates(second)
        ),
    )


@given(strategies.multisegments)
def test_vertices_reversal(multisegment: Multisegment) -> None:
    assert multisegment == reverse_multisegment(multisegment)


@given(strategies.multisegments, strategies.non_zero_integers)
def test_vertices_rotations(multisegment: Multisegment, offset: int) -> None:
    assert multisegment == rotate_multisegment(multisegment, offset)


@given(strategies.multisegments, strategies.non_zero_integers)
def test_vertices_rotations_of_reversal(
    multisegment: Multisegment, offset: int
) -> None:
    assert multisegment == rotate_multisegment(
        reverse_multisegment(multisegment), offset
    )