fix for travis?

test/helpers/mongo.js

@@ -20,11 +20,17 @@ export async function checkExistence (collectionName, id) {
 // Specifically helpful for the GET /groups tests,
 // resets the db to an empty state and creates a tavern document
 export async function resetHabiticaDB () {
+  console.log('calling resetHabiticaDatabase'); // eslint-disable-line
   return new Promise((resolve, reject) => {
     mongoose.connection.db.dropDatabase((dbErr) => {
       if (dbErr) return reject(dbErr);
       let groups = mongoose.connection.db.collection('groups');
 
+      // For some mysterious reason after a dropDatabase there can still be a group...
+      groups.count({_id: 'habitrpg'}, (err, count) => {
+        if (err) return reject(err);
+        if (count > 0) return resolve();
+
         groups.insertOne({
           _id: 'habitrpg',
           chat: [],
@@ -39,6 +45,7 @@ export async function resetHabiticaDB () {
         });
       });
     });
+  });
 }
 
 export async function updateDocument (collectionName, doc, update) {