fix(sdk-coin-ada): allowing fee address for sponsored tokens

Ticket: CSHLD-651

Author: dgm003

modules/sdk-coin-ada/src/adaToken.ts

@@ -1,4 +1,4 @@
-import { Ada } from './ada';
+import { Ada, AdaTxInfo } from './ada';
 import {
   BitGoBase,
   CoinConstructor,
@@ -145,11 +145,12 @@ export class AdaToken extends Ada {
           }
         }
       } else if (verification?.consolidationToBaseAddress) {
-        // For token consolidation, verify all outputs go to the base address
+        // For token consolidation, verify all outputs go to the base address or fee address (sponsored consolidations)
         const baseAddress = wallet?.coinSpecific()?.baseAddress || wallet?.coinSpecific()?.rootAddress;
+        const feeAddress = (txPrebuild.txInfo as AdaTxInfo)?.feeAddress;
 
         for (const output of txJson.outputs) {
-          if (output.address !== baseAddress) {
+          if (output.address !== baseAddress && output.address !== feeAddress) {
             throw new Error('tx outputs does not match with expected address');
           }
         }

modules/sdk-coin-ada/test/unit/ada.ts

@@ -1519,6 +1519,37 @@ describe('ADA', function () {
   });
 
   describe('Verify token consolidation transaction:', () => {
+    it('should verify a sponsored token consolidation when fee address output is present', async () => {
+      // This transaction has two outputs:
+      //   1. rootAddress — main consolidation output
+      //   2. feeAddress  — ADA change returned to the fee sponsor
+      // Both must be permitted by verifyTransaction when consolidationToBaseAddress is true.
+      const consolidationTx = {
+        txRequestId: '1b5c79c5-ab7c-4f47-912b-de6a95fb0779',
+        walletId: '64fa31a94db65a0007c9691b',
+        txHex:
+          '84a40082825820227f65d20ac6e49602d79c623c51911ead824235e01eb2a1e7e33a72f0747cbb00825820227f65d20ac6e49602d79c623c51911ead824235e01eb2a1e7e33a72f0747cbb0201828258390022098270a5c19c9fb706dce0e7e4566b234ec5f0010623cd63f198ad22098270a5c19c9fb706dce0e7e4566b234ec5f0010623cd63f198ad1a0098968082581d60cf90f9fb02c88bad3c5294d90587458c4f160a2db26ba8af3da255b11a05d42fb8021a0002a491031a06d8c048a0f5f6',
+        txInfo: {
+          feeAddress: 'addr_test1vr8ep70mqtyghtfu222djpv8gkxy79s29kexh2908k39tvge02d5j',
+        },
+      };
+
+      const mockedWallet = {
+        coinSpecific: () => ({
+          rootAddress:
+            'addr_test1qq3qnqns5hqee8ahqmwwpely2e4jxnk97qqsvg7dv0ce3tfzpxp8pfwpnj0mwpkuurn7g4ntyd8vtuqpqc3u6cl3nzksvggu82',
+        }),
+      };
+
+      const isVerified = await basecoin.verifyTransaction({
+        txParams: {},
+        txPrebuild: consolidationTx,
+        wallet: mockedWallet,
+        verification: { consolidationToBaseAddress: true },
+      });
+      isVerified.should.equal(true);
+    });
+
     it('should fail to verify a spoofed token consolidation transaction with incorrect address', async () => {
       const consolidationTx = {
         txRequestId: '4fdd0cae-2563-43b1-b5cf-94865158ca10',