fix: allowed callTracer to return empty string if no call actions found

Signed-off-by: Logan Nguyen <logan.nguyen@swirldslabs.com>

Author: quiet-node

packages/relay/src/lib/debug.ts

@@ -444,6 +444,9 @@ export class DebugImpl implements Debug {
         throw predefined.RESOURCE_NOT_FOUND(`Failed to retrieve contract results for transaction ${transactionHash}`);
       }
 
+      // return empty array if no actions
+      if (actionsResponse.length === 0) return [];
+
       const { call_type: type } = actionsResponse[0];
       const formattedActions = await this.formatActionsResult(actionsResponse, requestDetails);
 

packages/relay/tests/lib/debug.spec.ts

@@ -422,6 +422,19 @@ describe('Debug API Test Suite', async function () {
 
           expect(result).to.deep.equal(expectedResult);
         });
+
+        it('Should return empty array if no actions found', async function () {
+          restMock.onGet(CONTARCTS_RESULTS_ACTIONS).reply(200, JSON.stringify({ actions: [] }));
+
+          const result = await debugService.traceTransaction(
+            transactionHash,
+            callTracer,
+            tracerConfigFalse,
+            requestDetails,
+          );
+
+          expect(result).to.be.empty;
+        });
       });
 
       describe('opcodeLogger', async function () {