add test g00003.vtc

src/tests/g00003.vtc

+varnishtest "test gunzip on fetch"
+
+server s1 {
+	rxreq
+	expect req.url == "/foo"
+	expect req.http.accept-encoding == "gzip"
+	txresp -gziplen 41
+
+	rxreq
+	expect req.url == "/bar"
+	expect req.http.accept-encoding == "gzip"
+	txresp -bodylen 42
+
+	rxreq
+	expect req.url == "/foobar"
+	expect req.http.accept-encoding == "gzip"
+	txresp -bodylen 43
+} -start
+
+varnish v1 -cliok "param.set http_gzip_support true" -vcl {
+	import backend_dyn from "${vmod_topbuild}/src/.libs/libvmod_backend_dyn.so";
+
+	backend dummy { .host = "${bad_ip}"; }
+
+	sub vcl_init {
+		if (!backend_dyn.create(name="be", host="${s1_addr}",
+		   		        	   port="${s1_port}")) {
+			return(fail);
+		}
+	}
+
+	sub vcl_recv {
+		set req.backend_hint = backend_dyn.by_name("be");
+	}
+
+	sub vcl_backend_response {
+		set beresp.do_gunzip = true;
+		if (bereq.url == "/foobar") {
+			set beresp.do_gzip = true;
+		}
+	}
+} -start
+
+client c1 {
+	txreq -url /foo -hdr "Accept-Encoding: gzip"
+	rxresp
+	expect resp.http.content-encoding == <undef>
+	expect resp.bodylen == 41
+
+	txreq -url /bar -hdr "Accept-Encoding: gzip"
+	rxresp
+	expect resp.http.content-encoding == <undef>
+	expect resp.bodylen == 42
+
+	txreq -url /foobar -hdr "Accept-Encoding: gzip"
+	rxresp
+	expect resp.http.content-encoding == "gzip"
+	gunzip
+	expect resp.bodylen == 43
+
+	txreq -url /foobar
+	rxresp
+	expect resp.http.content-encoding == <undef>
+	expect resp.bodylen == 43
+} -run
+
+varnish v1 -expect VBE.vcl1.be.happy == 0
+varnish v1 -expect MAIN.n_backend == 2