def test_unpack_signed_max():
    assert S24BE.unpack(b"\x7f\xff\xff")[0] == 8388607
def test_unpack_signed_max():
    assert S24BE.unpack(b"\x7f\xff\xff")[0] == 8388607
def test_unpack_signed_min():
    assert S24BE.unpack(b"\x80\x00\x00")[0] == -8388608
def test_unpack_signed_min():
    assert S24BE.unpack(b"\x80\x00\x00")[0] == -8388608
def test_pack_signed_underflow():
    S24BE(-8388609)
def test_pack_signed_overflow():
    S24BE(8388608)
def test_pack_signed_max():
    assert S24BE(8388607) == b"\x7f\xff\xff"
def test_pack_signed_min():
    assert S24BE(-8388608) == b"\x80\x00\x00"