dht resolve test vector impl

packages/dids/src/methods/did-dht.ts

@@ -889,6 +889,10 @@ export class DidDhtDocument {
     // Read the Fetch Response stream into a byte array.
     const messageBytes = await response.arrayBuffer();
 
+    if(!messageBytes) {
+      throw new DidError(DidErrorCode.NotFound, `Pkarr record not found for: ${identifier}`);
+    }
+
     if (messageBytes.byteLength < 72) {
       throw new DidError(DidErrorCode.InvalidDidDocumentLength, `Pkarr response must be at least 72 bytes but got: ${messageBytes.byteLength}`);
     }

packages/dids/tests/methods/did-dht.spec.ts

@@ -6,6 +6,8 @@ import type { PortableDid } from '../../src/types/portable-did.js';
 
 import { DidErrorCode } from '../../src/did-error.js';
 import { DidDht, DidDhtRegisteredDidType } from '../../src/methods/did-dht.js';
+import DidDhtResolveTestVector from '../../../../web5-spec/test-vectors/did_dht/resolve.json' assert { type: 'json' };
+
 
 // Helper function to create a mocked fetch response that fails and returns a 404 Not Found.
 const fetchNotFoundResponse = () => ({
@@ -802,4 +804,14 @@ describe('DidDht', () => {
       expect(didResolutionResult.didResolutionMetadata).to.have.property('error', 'invalidDidDocumentLength');
     });
   });
+
+
+  describe('Web5TestVectorsDidDht', () => {
+    it('resolve', async () => {
+      for (const vector of DidDhtResolveTestVector.vectors) {
+        const didResolutionResult = await DidDht.resolve(vector.input.didUri);
+        expect(didResolutionResult.didResolutionMetadata.error).to.equal(vector.output.didResolutionMetadata.error);
+      }
+    });
+  });
 });