fix callback

Author: mariangz

tests/integration/test.bulk_docs.js

@@ -334,7 +334,7 @@ adapters.forEach((adapter) => {
 
     it('#2935 new_edits=false with single unauthorized', async () => {
 
-      const isCouchDB = await new Promise(resolve => testUtils.isCouchDB(resolve));
+      const isCouchDB = await testUtils.isCouchDB();
       if (adapter !== 'http' || !isCouchDB) {
         return;
       }

tests/integration/utils.js

@@ -169,7 +169,11 @@ testUtils.isCouchDB = async (cb) => {
   const {url, options} = parseHostWithCreds(testUtils.couchHost());
   const response = await PouchDB.fetch(url, options);
   const res = await response.json();
-  cb('couchdb' in res || 'express-pouchdb' in res);
+  const result = 'couchdb' in res || 'express-pouchdb' in res;
+  if (cb) {
+    cb(result);
+  }
+  return result;
 };
 
 testUtils.getServerType = async () => {