#!/usr/bin/env python
# encoding: utf-8


from mapytex.calculus import arithmetic


def test_gcd_commu():
    assert arithmetic.gcd(3, 15) == arithmetic.gcd(15, 3)


def test_gcd1():
    assert arithmetic.gcd(3, 15) == 3


def test_gcd2():
    assert arithmetic.gcd(14, 21) == 7


def test_gcd_prem():
    assert arithmetic.gcd(14, 19) == 1


def test_gcd_neg():
    assert arithmetic.gcd(3, -15) == 3
    assert arithmetic.gcd(-3, -15) == -3


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