add test z00000.vtc

src/tests/z00000.vtc

+# Somewhat oversimplified, but at least it ensures that SOMETHING works
+# (The alternative would be to automakeify this test or manually update it
+# every time there's a new version, which defeats the purpose somewhat).
+
+varnishtest "version string"
+
+server s1 {
+	rxreq
+	expect req.url == "/"
+	txresp -status 200
+} -start
+
+varnish v1 -vcl+backend {
+	import backend_dyn from "${vmod_topbuild}/src/.libs/libvmod_backend_dyn.so";
+
+	sub vcl_backend_response {
+		set beresp.http.x-version = backend_dyn.version();
+		if (!beresp.http.x-version) {
+			set beresp.status = 500;
+		}
+		return(deliver);
+	}
+} -start
+
+client c1 {
+	txreq -url "/"
+	rxresp
+	expect resp.status == 200
+	expect resp.http.x-version ~ "^.+$"
+} -run