fixed some test error: Encoder

src/main/java/encoding/Encoder.java

@@ -26,7 +26,7 @@ public class Encoder {
         this.right=1;
         this.isInitial=true;
         this.isEstimator=true;
-        this.totalReserve=new SizeT(Long.MAX_VALUE); //todo: 这里可能越界。
+        this.totalReserve=new SizeT(Long.MAX_VALUE);
     }
 
     /**
@@ -138,8 +138,8 @@ public class Encoder {
     public byte[] buildNonNegativeIntegerArr(long uint64){
         VlInt vlInt=new VlInt(uint64);
         int len=vlInt.getVlIntBytes().length;
-        if(len==1){
-            return vlInt.getVlIntBytes();
+        if(uint64<=255){
+            return new byte[]{(byte) uint64};
         }else {
             byte[] res = new byte[len - 1];
             System.arraycopy(vlInt.getVlIntBytes(),1,res,0,len-1);
@@ -275,13 +275,14 @@ public class Encoder {
      * @return
      */
     public int appendByteArrayBlock(VlInt tlvType,byte[] array,SizeT size) throws EncoderException {
-        int totalLength=this.appendByteArray(array,size);
-        try {
-            totalLength+=this.appendVarNumber(new VlInt(size.getVlIntValue2Long()));
-        } catch (VlIntException e) {
-            throw new EncoderException("appendByteArrayBlock: "+e.getMessage());
-        }
+        int totalLength=0;
+        // Append TLV-TYPE
         totalLength+=this.appendVarNumber(tlvType);
+        // Append TLV-LENGTH
+        totalLength+=this.appendVarNumber(new VlInt(size));
+        // Append TLV-VALUE
+        totalLength+=this.appendByteArray(array,size);
+
         return totalLength;
     }