diff --git a/.gitignore b/.gitignore
index 1f4d7c9..559e773 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,3 +3,5 @@
 /coverage/
 /vendor/
 Gemfile.lock
+/test/plugin/data/
+/test/tools/data/
\ No newline at end of file
diff --git a/test/plugin/out_mongo.rb b/test/plugin/out_mongo.rb
index f2b79da..953ec15 100644
--- a/test/plugin/out_mongo.rb
+++ b/test/plugin/out_mongo.rb
@@ -25,6 +25,7 @@ def default_config
       type mongo
       database #{MONGO_DB_DB}
       collection #{collection_name}
+      include_time_key true # TestDriver ignore config_set_default?
     ]
   end
 
@@ -237,6 +238,7 @@ def default_config
       collection #{collection_name}
       nodes #{build_seeds(3).join(',')}
       num_retries 30
+      include_time_key true # TestDriver ignore config_set_default?
     ]
   end
 
@@ -266,3 +268,4 @@ def test_configure
     assert_equal({:ssl => false}, d.instance.connection_options)
   end
 end
+