Install yasnippet and vala-snippets packages

elpa/yasnippet-20160924.2001/snippets/c++-mode/test_main

@@ -0,0 +1,10 @@
+# -*- mode: snippet -*-
+# name: test_main
+# key: test_main
+# group: testing
+# --
+int main(int argc, char **argv)
+{
+      ::testing::InitGoogleTest(&argc, argv);
+       return RUN_ALL_TESTS();
+}