add error handle: ComponentException & PacketException

src/test/java/encoding/TLVTest.java

@@ -0,0 +1,25 @@
+package encoding;
+
+import org.junit.Test;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+
+/*
+ * @Author: Wang Feng
+ * @Description:
+ * @Version: 1.0.0
+ * @Date: 20:59 2021/3/23
+ * @Copyright: MIN-Group；国家重大科技基础设施——未来网络北大实验室；深圳市信息论与未来网络重点实验室
+ */
+public class TLVTest {
+    @Test
+    public void testReadVarNumber() throws TLVException {
+        byte[] buf=new byte[10];
+        // 测试单个字节表示
+        buf[0]=(byte)240;
+        VlInt res=TLV.readVarNumber(buf,new VlInt(0));
+        assertTrue(res.isEqual(240));
+//        assertEquals();
+    }
+}