Add counter tests

unittest/vslib/Makefile.am

@@ -16,6 +16,7 @@ testslibsaivs_SOURCES =	main_libsaivs.cpp \
 				test_sai_vs_bmtor.cpp \
 				test_sai_vs_bridge.cpp \
 				test_sai_vs_buffer.cpp \
+				test_sai_vs_counter.cpp \
 				test_sai_vs_hash.cpp \
 				test_sai_vs_vlan.cpp \
 				test_sai_vs_hostif.cpp \

unittest/vslib/test_sai_vs_counter.cpp

@@ -0,0 +1,27 @@
+#include <gtest/gtest.h>
+
+extern "C" {
+#include "sai.h"
+}
+
+#include "swss/logger.h"
+
+TEST(libsaivs, counter)
+{
+    sai_counter_api_t *api = nullptr;
+
+    sai_api_query(SAI_API_COUNTER, (void**)&api);
+
+    EXPECT_NE(api, nullptr);
+
+    sai_object_id_t id;
+
+    EXPECT_NE(SAI_STATUS_SUCCESS, api->create_counter(&id,0,0,0));
+    EXPECT_NE(SAI_STATUS_SUCCESS, api->remove_counter(0));
+    EXPECT_NE(SAI_STATUS_SUCCESS, api->set_counter_attribute(0,0));
+    EXPECT_NE(SAI_STATUS_SUCCESS, api->get_counter_attribute(0,0,0));
+
+    EXPECT_NE(SAI_STATUS_SUCCESS, api->get_counter_stats(0,0,0,0));
+    EXPECT_NE(SAI_STATUS_SUCCESS, api->get_counter_stats_ext(0,0,0,SAI_STATS_MODE_READ,0));
+    EXPECT_NE(SAI_STATUS_SUCCESS, api->clear_counter_stats(0,0,0));
+}