@Test(timeout = 40000)
public void testGetNumBytesToRead() {

  long pos = 100;
  long buffLength = 1024;
  long fileLength = 2058;
  RetriableFileCopyCommand retriableFileCopyCommand =
          new RetriableFileCopyCommand("Testing NumBytesToRead ",
                  FileAction.OVERWRITE);
  long numBytes = retriableFileCopyCommand
          .getNumBytesToRead(fileLength, pos, buffLength);
  Assert.assertEquals(1024, numBytes);
  pos += numBytes;
  numBytes = retriableFileCopyCommand
          .getNumBytesToRead(fileLength, pos, buffLength);
  Assert.assertEquals(934, numBytes);
  pos += numBytes;
  numBytes = retriableFileCopyCommand
          .getNumBytesToRead(fileLength, pos, buffLength);
  Assert.assertEquals(0, numBytes);
}