// Should throw IOException for unexpected EOF
        assertThrows(IOException.class, () -> sis.read());
    }

    @Test
    @DisplayName("Large message is read correctly")
    void largeMessageIsReadCorrectly() throws IOException {
        // Create a message with 1000 bytes
        int size = 1000;
        byte[] data = new byte[size];
        for (int i = 0; i < size; i++) {
            data[i] = (byte) (i % 256);