def test_code():
    assert main.addCheck(2,2,4) == True
    assert main.addCheck(6,5,11) == True
    assert main.addCheck(6,5,12) == False
def test_code():
    assert main.addCheck(2,2) == 4, "addCheck(2, 2) == 4 failed"
    assert main.addCheck(6,5) == 11, "addCheck(6, 5) == 11 failed"