Add testcase for callbacks

Change-Id: Iff1ddb9c18b5384d05a4d2dbfba95ade8cc1783c
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/src/test/callbackgentest.cpp b/src/test/callbackgentest.cpp
new file mode 100644
index 0000000..77fe60a
--- /dev/null
+++ b/src/test/callbackgentest.cpp
@@ -0,0 +1,35 @@
+#include <array>
+#include <string>
+#include <gtest/gtest.h>
+#include "data_types.hpp"
+
+using namespace phosphor::dbus::monitoring;
+
+using Index = std::map<std::tuple<size_t, size_t, size_t>, size_t>;
+
+#include "callbackgentest.hpp"
+
+const std::array<std::tuple<std::string, size_t>, 4> expectedCallbacks =
+{
+    {
+        std::tuple<std::string, size_t>{"int32_t", 0},
+        std::tuple<std::string, size_t>{"int32_t", 0},
+        std::tuple<std::string, size_t>{"std::string", 1},
+        std::tuple<std::string, size_t>{"std::string", 2},
+    }
+};
+
+TEST(CallbackGenTest, CallbacksSameSize)
+{
+    ASSERT_EQ(sizeof(expectedCallbacks), sizeof(callbacks));
+}
+
+TEST(CallbackGenTest, CallbacksSameContent)
+{
+    size_t i;
+    for (i = 0; i < expectedCallbacks.size(); ++i)
+    {
+        ASSERT_EQ(callbacks[i],
+                  expectedCallbacks[i]);
+    }
+}