Fixed async tests to pass TASN checks

tests/test_async.cpp

@@ -26,8 +26,9 @@ TEST_CASE("discard policy ", "[async]")
 {
     using namespace spdlog;
     auto test_sink = std::make_shared<sinks::test_sink_mt>();
-    size_t queue_size = 2;
-    size_t messages = 10240;
+    test_sink->set_delay(std::chrono::milliseconds(1));
+    size_t queue_size = 4;
+    size_t messages = 1024;
 
     auto tp = std::make_shared<details::thread_pool>(queue_size, 1);
     auto logger = std::make_shared<async_logger>("as", test_sink, tp, async_overflow_policy::overrun_oldest);
@@ -41,17 +42,20 @@ TEST_CASE("discard policy ", "[async]")
 TEST_CASE("discard policy using factory ", "[async]")
 {
     using namespace spdlog;
-    size_t queue_size = 2;
-    size_t messages = 10240;
+    size_t queue_size = 4;
+    size_t messages = 1024;
     spdlog::init_thread_pool(queue_size, 1);
 
     auto logger = spdlog::create_async_nb<sinks::test_sink_mt>("as2");
+    auto test_sink = std::static_pointer_cast<sinks::test_sink_mt>(logger->sinks()[0]);
+    test_sink->set_delay(std::chrono::milliseconds(1));
+
     for (size_t i = 0; i < messages; i++)
     {
         logger->info("Hello message");
     }
-    auto sink = std::static_pointer_cast<sinks::test_sink_mt>(logger->sinks()[0]);
-    REQUIRE(sink->msg_counter() < messages);
+
+    REQUIRE(test_sink->msg_counter() < messages);
     spdlog::drop_all();
 }
 

tests/test_sink.h

@@ -21,11 +21,13 @@ class test_sink : public base_sink<Mutex>
 public:
     size_t msg_counter()
     {
+        std::lock_guard<Mutex> lock(base_sink<Mutex>::mutex_);
         return msg_counter_;
     }
 
     size_t flush_counter()
     {
+        std::lock_guard<Mutex> lock(base_sink<Mutex>::mutex_);
         return flush_counter_;
     }