Test empty file

src/vtc/ex2.vtc

@@ -7,6 +7,8 @@ server s1 {
 	txresp -bodylen 1024
 	rxreq
 	txresp -bodylen 1024
+	rxreq
+	txresp
 } -start
 
 varnish v1 -vcl+backend {
@@ -33,6 +35,7 @@ varnish v1 -vcl+backend {
 		# create two subrequests to put into the zip
 		zipflow.subreq("/file1");
 		zipflow.subreq("/file2");
+		zipflow.subreq("/empty");
 		return (deliver);
 	}
 
@@ -50,4 +53,4 @@ client c1 {
 	expect resp.bodylen > 100
 } -run
 
-shell "curl -so t.zip -H 'Host: ${v1_addr}' http://${v1_addr}:${v1_port}/zip && unzip -Z t.zip"
\ No newline at end of file
+shell "curl -so t.zip -H 'Host: ${v1_addr}' http://${v1_addr}:${v1_port}/zip && unzip -Z t.zip"