readPacket.length = written;

        int bytesRead = readPacket.readTrailerWireFormat(bais, buffer, 0);

        assertEquals(written, bytesRead);
    }

    @Test
    @DisplayName("readTrailerWireFormat should throw IOException on incomplete data")
    void testReadTrailerWireFormatIncompleteData() {

                dst[dstIndex + i] = (byte) i;
            }
            return trailerLength;
        }

        @Override
        int readTrailerWireFormat(InputStream in, byte[] buffer, int bufferIndex) throws IOException {
            // Simple mock implementation
            byte[] temp = new byte[length];
            int read = in.read(temp, 0, length);