diff --git a/unittest/vslib/Makefile.am b/unittest/vslib/Makefile.am
index 48b908295eef..26dc9b0ba49d 100644
--- a/unittest/vslib/Makefile.am
+++ b/unittest/vslib/Makefile.am
@@ -27,7 +27,9 @@ tests_SOURCES = main.cpp \
 				TestResourceLimiter.cpp \
 				TestResourceLimiterContainer.cpp \
 				TestResourceLimiterParser.cpp \
-				TestSaiUnittests.cpp
+				TestSaiUnittests.cpp \
+				TestSelectableFd.cpp \
+				TestSignal.cpp
 
 tests_CXXFLAGS = $(DBGFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS_COMMON)
 tests_LDADD = $(LDADD_GTEST) $(top_srcdir)/vslib/libSaiVS.a -lhiredis -lswsscommon -lnl-genl-3 -lnl-nf-3 -lnl-route-3 -lnl-3 \
diff --git a/unittest/vslib/TestSignal.cpp b/unittest/vslib/TestSignal.cpp
new file mode 100644
index 000000000000..44c90583b35f
--- /dev/null
+++ b/unittest/vslib/TestSignal.cpp
@@ -0,0 +1,12 @@
+#include "Signal.h"
+
+#include <gtest/gtest.h>
+
+using namespace saivs;
+
+TEST(Signal, notifyOne)
+{
+    Signal s;
+
+    s.notifyOne();
+}