chore: fix stub

test/unit/client-side-encryption/auto_encrypter.test.ts

@@ -63,11 +63,12 @@ describe('AutoEncrypter', function () {
  return Promise.resolve();
  });
 
- sandbox.stub(StateMachine.prototype, 'fetchCollectionInfo').returns(
- (async function* () {
- while (true) yield MOCK_COLLINFO_RESPONSE;
- })()
- );
+ const iterator = (async function* () {
+ yield BSON.deserialize(MOCK_COLLINFO_RESPONSE);
+ yield BSON.deserialize(MOCK_COLLINFO_RESPONSE);
+ yield BSON.deserialize(MOCK_COLLINFO_RESPONSE);
+ })();
+ sandbox.stub(StateMachine.prototype, 'fetchCollectionInfo').returns(iterator);
 
  sandbox.stub(StateMachine.prototype, 'markCommand').callsFake(() => {
  if (ENABLE_LOG_TEST) {