Test fix

Author: cykoder

packages/vc-delegation-engine/src/engine.js

@@ -30,6 +30,7 @@ import { summarizeDelegationChain, summarizeStandaloneCredential } from './summa
 import { DelegationError, DelegationErrorCodes, normalizeDelegationFailure } from './errors.js';
 
 const CONTROL_PREDICATES = new Set(['allows', 'delegatesTo', 'listsClaim', 'inheritsParent']);
+const DELEGATION_TYPE_NAME = shortenTerm(VC_TYPE_DELEGATION_CREDENTIAL);
 const RESERVED_RESOURCE_TYPES = new Set([
   `${VC_NS}VerifiableCredential`,
   'VerifiableCredential',
@@ -459,7 +460,13 @@ export async function verifyVPWithDelegation({
 
     // Early out failure if missing credential from chain
     normalizedCredentials.forEach((credential) => {
-      const { id, previousCredentialId, rootCredentialId } = credential;
+      const {
+        id, previousCredentialId, rootCredentialId, type,
+      } = credential;
+      const isDelegationCredential = Array.isArray(type) && type.includes(DELEGATION_TYPE_NAME);
+      if (!isDelegationCredential) {
+        return;
+      }
       if (previousCredentialId && !normalizedById.has(previousCredentialId)) {
         throw new DelegationError(
           DelegationErrorCodes.MISSING_CREDENTIAL,