// All data should still be available
        assertEquals(10, sis.read());
    }

    @Test
    @DisplayName("Skip correctly advances position in stream")
    void skipAdvancesPosition() throws IOException {
        // Create message with 5 bytes of data
        byte[] data = new byte[] { 10, 20, 30, 40, 50 };
        InputStream in = new ByteArrayInputStream(concat(messageHeader(5), data));