assertThrows(IOException.class, () -> sis.read());
    }

    @Test
    @DisplayName("Reading with zero-length array returns 0")
    void readZeroLengthArrayReturnsZero() throws IOException {
        // Create stream with a message containing data
        byte[] data = new byte[] { 1, 2 };
        InputStream in = new ByteArrayInputStream(concat(messageHeader(2), data));