fix tests

Author: baileympearson

test/unit/api.test.js

@@ -37,7 +37,11 @@ const OVERRIDDEN_CLASSES_GETTER = new Map([
   ['Db', () => new mongodbLegacy.Db(client, 'animals')],
   ['FindCursor', () => new mongodbLegacy.FindCursor(client, namespace)],
   ['GridFSBucket', () => new mongodbLegacy.GridFSBucket(db)],
-  ['GridFSBucketWriteStream', () => new mongodbLegacy.GridFSBucket(db).openUploadStream('file')],
+  ['GridFSBucketWriteStream', () => {
+    const stream = new mongodbLegacy.GridFSBucket(db).openUploadStream('file')
+    stream.on('error', () => { });
+    return stream;
+  }],
   ['ListCollectionsCursor', () => new mongodbLegacy.ListCollectionsCursor(db, {})],
   ['ListIndexesCursor', () => new mongodbLegacy.ListIndexesCursor(collection)],
   ['MongoClient', () => new mongodbLegacy.MongoClient(iLoveJs)],