fix: bug fix in canton verify txn flow

modules/sdk-coin-canton/src/lib/transaction/transaction.ts

@@ -244,7 +244,7 @@ export class Transaction extends BaseTransaction {
       }
       case TransactionType.Send: {
         const txData = this.toJson();
-        outputs.push({ address: txData.sender, amount: txData.amount });
+        outputs.push({ address: txData.receiver, amount: txData.amount });
         outputAmount = txData.amount;
         break;
       }

modules/sdk-coin-canton/src/lib/utils.ts

@@ -1,3 +1,4 @@
+import BigNumber from 'bignumber.js';
 import crypto from 'crypto';
 
 import { BaseUtils, isValidEd25519PublicKey } from '@bitgo/sdk-core';
@@ -145,10 +146,11 @@ export class Utils implements BaseUtils {
       if (!amount) missingFields.push('amount');
       throw new Error(`invalid transaction data: missing ${missingFields.join(', ')}`);
     }
+    const convertedAmount = this.convertAmountToLowestUnit(new BigNumber(amount));
     return {
       sender,
       receiver,
-      amount,
+      amount: convertedAmount,
     };
   }
 
@@ -296,6 +298,16 @@ export class Utils implements BaseUtils {
     buf.writeInt32BE(value, 0);
     return buf;
   }
+
+  /**
+   * Convert to canton raw units
+   * @param {BigNumber} value
+   * @returns {String} the converted raw canton units
+   * @private
+   */
+  private convertAmountToLowestUnit(value: BigNumber): string {
+    return value.multipliedBy(new BigNumber(10).pow(10)).toFixed(0);
+  }
 }
 
 const utils = new Utils();

modules/sdk-coin-canton/test/integration/canton.integration.ts

@@ -1,26 +1,59 @@
 import assert from 'assert';
 
 import { BitGoAPI } from '@bitgo/sdk-api';
-import { TransactionType } from '@bitgo/sdk-core';
+import { ITransactionRecipient, TransactionType, Wallet } from '@bitgo/sdk-core';
 import { TestBitGo, TestBitGoAPI } from '@bitgo/sdk-test';
 
 import { getCantonBuilderFactory } from '../helper';
 import {
   CANTON_RECEIVE_ADDRESS,
   GenerateTopologyResponse,
   TransferAcceptRawTransaction,
+  TransferRawTxn,
   TransferRejectRawTransaction,
+  TxParams,
   WalletInitRawTransaction,
 } from '../resources';
 import { Tcanton } from '../../src';
 
 describe('Canton integration tests', function () {
   let bitgo: TestBitGoAPI;
   let basecoin: Tcanton;
+  let newTxPrebuild: () => { txHex: string; txInfo: Record<string, unknown> };
+  let newTxParams: () => { recipients: ITransactionRecipient[] };
+  let wallet: Wallet;
+  const txPrebuild = {
+    txHex: TransferRawTxn,
+    txInfo: {},
+  };
+  const txParams = {
+    recipients: [
+      {
+        address: TxParams.RECIPIENT_ADDRESS,
+        amount: TxParams.AMOUNT,
+      },
+    ],
+  };
   before(() => {
     bitgo = TestBitGo.decorate(BitGoAPI, { env: 'mock' });
     bitgo.safeRegister('tcanton', Tcanton.createInstance);
     basecoin = bitgo.coin('tcanton') as Tcanton;
+    newTxPrebuild = () => {
+      return structuredClone(txPrebuild);
+    };
+    newTxParams = () => {
+      return structuredClone(txParams);
+    };
+    wallet = new Wallet(bitgo, basecoin, {});
+  });
+
+  describe('Verify Transaction', function () {
+    it('should verify transfer transaction', async function () {
+      const txPrebuild = newTxPrebuild();
+      const txParams = newTxParams();
+      const isTxnVerifies = await basecoin.verifyTransaction({ txPrebuild: txPrebuild, txParams: txParams, wallet });
+      isTxnVerifies.should.equal(true);
+    });
   });
 
   describe('Explain raw transaction', function () {
@@ -41,7 +74,7 @@ describe('Canton integration tests', function () {
       assert(explainTxData);
       assert(explainTxData.id);
       assert.equal(explainTxData.type, TransactionType.TransferAccept);
-      assert.equal(explainTxData.inputAmount, '5.0000000000');
+      assert.equal(explainTxData.inputAmount, '50000000000');
     });
 
     it('should explain raw transfer rejection transaction', function () {
@@ -50,7 +83,7 @@ describe('Canton integration tests', function () {
       const explainTxData = txn.explainTransaction();
       assert(explainTxData);
       assert.equal(explainTxData.type, TransactionType.TransferReject);
-      assert.equal(explainTxData.inputAmount, '5.0000000000');
+      assert.equal(explainTxData.inputAmount, '50000000000');
     });
   });
 

modules/sdk-coin-canton/test/unit/utils.ts

@@ -18,7 +18,7 @@ describe('Canton Util', function () {
       should.exist(parsedData);
       assert.equal(parsedData.sender, 'abc-1::12200c1ee226fbdf9fba3461c2c0c73331b69d3c6fd8cfce28cdf864141141cc656d');
       assert.equal(parsedData.receiver, 'abc-2::12207e96ada18a845adf4dc01410265633d5266dca9bb280c98e35c3692db87d3e35');
-      assert.equal(parsedData.amount, '20.0000000000');
+      assert.equal(parsedData.amount, '200000000000');
     });
 
     it('should parse the acceptance prepared transaction', () => {
@@ -29,7 +29,7 @@ describe('Canton Util', function () {
         parsedData.receiver,
         'ravi-demo-party-txn-01-tapper::1220ea7ab5a723f8a6b2078e617e6c58cb7e78e49947ddc239e1a941aa56e6ba08b4'
       );
-      assert.equal(parsedData.amount, '5.0000000000');
+      assert.equal(parsedData.amount, '50000000000');
     });
 
     it('should parse the one-step preapproval prepared transaction', () => {