from mysoftware import *

def test_square_integers():
    assert square(2) == 4
    assert square(0) == 0
    assert square(-1) == 1
    assert square(3) == 9

def test_coulomb():
   assert coulomb(1.0) == 1.0
   assert coulomb(2.0) == 0.5
   assert coulomb(-2.0) == 0.5
   assert coulomb(0.0)
