if err == nil {
			if test.bitLength != ret.BitLength || !bytes.Equal(ret.Bytes, test.out) {
				t.Errorf("#%d: Bad result: %v (expected %v %v)", i, ret, test.out, test.bitLength)
			}
		}
	}
}

func TestBitStringAt(t *testing.T) {
	bs := BitString{[]byte{0x82, 0x40}, 16}
	if bs.At(0) != 1 {
		t.Error("#1: Failed")
	}
	if bs.At(1) != 0 {
		t.Error("#2: Failed")
	}
	if bs.At(6) != 1 {
		t.Error("#3: Failed")