test_structures.py

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# This file is dual licensed under the terms of the Apache License, Version

# 2.0, and the BSD License. See the LICENSE file in the root of this repository

# for complete details.

import pytest

from packaging._structures import Infinity, NegativeInfinity

def test_infinity_repr():

    repr(Infinity) == "Infinity"

def test_negative_infinity_repr():

    repr(NegativeInfinity) == "-Infinity"

def test_infinity_hash():

    assert hash(Infinity) == hash(Infinity)

def test_negative_infinity_hash():

    assert hash(NegativeInfinity) == hash(NegativeInfinity)

@pytest.mark.parametrize("left", [1, "a", ("b", 4)])

def test_infinity_comparison(left):

    assert left < Infinity

    assert left <= Infinity

    assert not left == Infinity

    assert left != Infinity

    assert not left > Infinity

    assert not left >= Infinity

@pytest.mark.parametrize("left", [1, "a", ("b", 4)])

def test_negative_infinity_lesser(left):

    assert not left < NegativeInfinity

    assert not left <= NegativeInfinity

    assert not left == NegativeInfinity

    assert left != NegativeInfinity

    assert left > NegativeInfinity

    assert left >= NegativeInfinity

def test_infinity_equal():

    assert Infinity == Infinity

def test_negative_infinity_equal():

    assert NegativeInfinity == NegativeInfinity

def test_negate_infinity():

    assert isinstance(-Infinity, NegativeInfinity.__class__)

def test_negate_negative_infinity():

    assert isinstance(-NegativeInfinity, Infinity.__class__)