### Question:
AwsChunkedEncodingInputStream extends SdkInputStream { @Override public int read() throws IOException { final byte[] tmp = new byte[1]; final int count = read(tmp, 0, 1); if (count != -1) { if (log.isDebugEnabled()) { log.debug("One byte read from the stream."); } final int unsignedByte = tmp[0] & BIT_MASK; return unsignedByte; } else { return count; } } AwsChunkedEncodingInputStream(InputStream in, byte[] kSigning,
            String datetime, String keyPath, String headerSignature,
            AWS4Signer aws4Signer);  AwsChunkedEncodingInputStream(InputStream in, int maxBufferSize,
            byte[] kSigning, String datetime, String keyPath,
            String headerSignature, AWS4Signer aws4Signer); @Override int read(); @Override int read(byte[] b, int off, int len); @Override long skip(long n); @Override boolean markSupported(); @Override synchronized void mark(int readlimit); @Override synchronized void reset(); static long calculateStreamContentLength(long originalLength);  }### Answer:
@Test public void testRead() throws IOException { ByteArrayOutputStream baos = new ByteArrayOutputStream(); baos.write(aceis.read()); baos.write(aceis.read()); baos.write(aceis.read()); byte[] buf = new byte[2048]; int read = -1; while ((read = aceis.read(buf)) != -1) { baos.write(buf, 0, read); } aceis.close(); baos.flush(); assertArrayEquals(getExpectedOutput(), baos.toByteArray()); }