add test: SignatureTest

src/main/java/component/Signature.java

@@ -10,25 +10,12 @@ import minsecurity.identity.Identity;
  * @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 Signature {
-    public SignatureInfo getSigInfo() {
-        return sigInfo;
-    }
+    private SignatureInfo sigInfo=new SignatureInfo();
+    private SignatureValue sigValue=new SignatureValue();
 
-    public void setSigInfo(SignatureInfo sigInfo) {
-        this.sigInfo = sigInfo;
+    public Signature(){
     }
 
-    public SignatureValue getSigValue() {
-        return sigValue;
-    }
-
-    public void setSigValue(SignatureValue sigValue) {
-        this.sigValue = sigValue;
-    }
-
-    private SignatureInfo sigInfo;
-    private SignatureValue sigValue;
-
     /**
      * 根据网络身份创建一个 Signature
      * @param identity
@@ -46,4 +33,20 @@ public class Signature {
         this.sigInfo=signatureInfo;
         this.sigValue=signatureValue;
     }
+
+    public SignatureInfo getSigInfo() {
+        return sigInfo;
+    }
+
+    public void setSigInfo(SignatureInfo sigInfo) {
+        this.sigInfo = sigInfo;
+    }
+
+    public SignatureValue getSigValue() {
+        return sigValue;
+    }
+
+    public void setSigValue(SignatureValue sigValue) {
+        this.sigValue = sigValue;
+    }
 }

src/main/java/component/SignatureValue.java

@@ -15,6 +15,9 @@ import encoding.*;
 public class SignatureValue implements TlvComponentBase, IEncodingAble {
     private byte[] value;
 
+    public SignatureValue(){
+    }
+
     /**
      * 根据签名值字节数组创建一个 SignatureValue
      * @param value