fix

src/test.cpp

@@ -17,13 +17,13 @@ int main(int argc, char* argv[])
     auto null_sink = std::make_shared<c11log::sinks::null_sink>();
     auto stdout_sink = std::make_shared<c11log::sinks::stdout_sink>();
     auto async = std::make_shared<c11log::sinks::async_sink>(100);
-    auto fsink = std::make_shared<c11log::sinks::rotating_file_sink>("newlog", "txt", 1024*1024*10 , 2);
+    //auto fsink = std::make_shared<c11log::sinks::rotating_file_sink>("newlog", "txt", 1024*1024*10 , 2);
+    auto fsink = std::make_shared<c11log::sinks::midnight_file_sink>("midnight", "txt");
 
-    async->add_sink(null_sink);
+    async->add_sink(fsink);
 
     c11log::logger logger("test");
     logger.add_sink(async);
-
 	
     std::atomic<uint32_t> counter { 0 };
     auto counter_ptr = &counter;