Fixed transactionHttp unit test

Author: rg911

src/infrastructure/TransactionHttp.ts

@@ -166,7 +166,7 @@ export class TransactionHttp extends Http implements TransactionRepository {
      */
     public announceAggregateBonded(signedTransaction: SignedTransaction): Observable<TransactionAnnounceResponse> {
         if (signedTransaction.type !== TransactionType.AGGREGATE_BONDED) {
-            throwError('Only Transaction Type 0x4241 is allowed for announce aggregate bonded');
+            throw new Error('Only Transaction Type 0x4241 is allowed for announce aggregate bonded');
         }
         return observableFrom(this.transactionRoutesApi.announcePartialTransaction(signedTransaction)).pipe(
             map((response: { response: ClientResponse; body: AnnounceTransactionInfoDTO; } ) => {

test/infrastructure/TransactionHttp.spec.ts

@@ -46,12 +46,10 @@ describe('TransactionHttp', () => {
 
         const signedTx = account.sign(aggTx, generationHash);
         const trnsHttp = new TransactionHttp(NIS2_URL);
-        return trnsHttp.announceAggregateBonded(signedTx)
+        expect(() => {
+            trnsHttp.announceAggregateBonded(signedTx)
             .toPromise()
-            .then(() => {
-            })
-            .catch((reason) => {
-                expect(reason.toString()).to.be.equal('Only Transaction Type 0x4241 is allowed for announce aggregate bonded');
-            });
+            .then();
+        }).to.throw(Error, 'Only Transaction Type 0x4241 is allowed for announce aggregate bonded');
     });
 });