added coverage for SignatureUtils.java

Author: cybele-ripple

xrpl4j-core/src/test/java/org/xrpl/xrpl4j/crypto/signing/SignatureUtilsTest.java

@@ -88,6 +88,7 @@
 import org.xrpl.xrpl4j.model.transactions.CredentialType;
 import org.xrpl.xrpl4j.model.transactions.CredentialUri;
 import org.xrpl.xrpl4j.model.transactions.CredentialWrapper;
+import org.xrpl.xrpl4j.model.transactions.DelegateSet;
 import org.xrpl.xrpl4j.model.transactions.DepositPreAuth;
 import org.xrpl.xrpl4j.model.transactions.DidDelete;
 import org.xrpl.xrpl4j.model.transactions.DidSet;
@@ -1499,6 +1500,19 @@ void addSignatureToDidDelete() {
     addSignatureToTransactionHelper(transaction);
   }
 
+  @Test
+  void addSignatureToDelegateSet() {
+    DelegateSet transaction = DelegateSet.builder()
+      .account(sourcePublicKey.deriveAddress())
+      .fee(XrpCurrencyAmount.ofDrops(10))
+      .sequence(UnsignedInteger.valueOf(391))
+      .signingPublicKey(sourcePublicKey)
+      .authorize(signer1KeyPair.publicKey().deriveAddress())
+      .build();
+
+    addSignatureToTransactionHelper(transaction);
+  }
+
   @Test
   void addSignatureToOracleSet() {
     OracleSet transaction = OracleSet.builder()
@@ -2271,6 +2285,18 @@ void addMultiSignatureToDidDelete() {
     addMultiSignatureToTransactionHelper(transaction);
   }
 
+  @Test
+  void addMultiSignatureToDelegateSet() {
+    DelegateSet transaction = DelegateSet.builder()
+      .account(sourcePublicKey.deriveAddress())
+      .fee(XrpCurrencyAmount.ofDrops(10))
+      .sequence(UnsignedInteger.valueOf(391))
+      .authorize(signer1KeyPair.publicKey().deriveAddress())
+      .build();
+
+    addMultiSignatureToTransactionHelper(transaction);
+  }
+
   @Test
   void addMultiSignatureToOracleSet() {
     OracleSet transaction = OracleSet.builder()