From b3d89df07e66fa3f5d27ee85e283728f9a81f942 Mon Sep 17 00:00:00 2001
From: Wilson Li <windkithk@gmail.com>
Date: Tue, 3 Oct 2017 14:49:24 +0900
Subject: [PATCH] Set default value for rotator

---
 src/lager_file_backend.erl | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/lager_file_backend.erl b/src/lager_file_backend.erl
index f8fe57e..c6f031d 100644
--- a/src/lager_file_backend.erl
+++ b/src/lager_file_backend.erl
@@ -68,7 +68,7 @@
         size = 0 :: integer(),
         date :: undefined | string(),
         count = 10 :: integer(),
-        rotator :: atom(),
+        rotator = lager_util :: atom(),
         shaper :: lager_shaper(),
         formatter :: atom(),
         formatter_config :: any(),
@@ -469,7 +469,7 @@ rotation_test_() ->
                 {ok, {FD, Inode, _}} = lager_util:open_logfile(TestLog, {SyncSize, SyncInterval}),
                 State0 = DefaultState#state{fd=FD, inode=Inode},
                 ?assertMatch(#state{name=TestLog, level=?DEBUG, fd=FD, inode=Inode},
-                    write(State0, os:timestamp(), ?DEBUG, "hello world")),
+                write(State0, os:timestamp(), ?DEBUG, "hello world")),
                 file:delete(TestLog),
                 Result = write(State0, os:timestamp(), ?DEBUG, "hello world"),
                 %% assert file has changed