1 files changed, 9 insertions, 3 deletions
diff --git a/jstests/core/update_server-12848.js b/jstests/core/update_server-12848.js
index f5ee9a8f2fa..c33e8dd9f62 100644
--- a/jstests/core/update_server-12848.js
+++ b/jstests/core/update_server-12848.js
@@ -8,13 +8,19 @@ var res;
 var t = db.update_server_12848;
 t.drop();
 
-var orig = { "_id" : 1, "a" : [ 1, [ ] ] };
+var orig = {
+    "_id": 1,
+    "a": [1, []]
+};
 res = t.insert(orig);
 assert.writeOK(res, "insert");
 assert.eq(orig, t.findOne());
 
-res = t.update({ "_id" : 1 }, { $addToSet : { "a.1" : 1 } });
+res = t.update({"_id": 1}, {$addToSet: {"a.1": 1}});
 assert.writeOK(res, "update");
 
-var updated = { "_id" : 1, "a" : [ 1, [ 1 ] ] };
+var updated = {
+    "_id": 1,
+    "a": [1, [1]]
+};
 assert.eq(updated, t.findOne());