from solution import years_until


def test_int_input_25():
    assert years_until(25) == 75


def test_int_input_7():
    assert years_until(7) == 93


def test_int_input_60():
    assert years_until(60) == 40


def test_string_input_converted():
    assert years_until("25") == 75


def test_zero():
    assert years_until(0) == 100