Experimental patch to send function-keys to vtc processes.

(May not work due to termcap/terminfo differences)

bin/varnishtest/tests/u00008.vtc

@@ -11,9 +11,9 @@ varnish v1 -vcl+backend {
 	}
 } -start
 
-process p1 -dump {varnishstat -n ${v1_name}} -start
-process p2 -dump {varnishstat -n ${v1_name}} -start
-process p3 -dump {varnishstat -n ${v1_name}} -start
+process p1 {varnishstat -n ${v1_name}} -start
+process p2 {varnishstat -n ${v1_name}} -start
+process p3 {varnishstat -n ${v1_name}} -start
 
 process p1 -expect-text 0 0 "VBE.vcl1.s1.happy"
 process p1 -screen_dump
@@ -66,6 +66,24 @@ process p1 -winsz 25 132
 process p1 -expect-text 4 124 "AVG_1000"
 process p1 -expect-text 22 108 "UNSEEN  DIAG"
 
+process p1 -key NPAGE
+process p1 -expect-text 0 0 "VBE.vcl1.s1.helddown"
+process p1 -screen_dump
+
+process p1 -key PPAGE
+process p1 -expect-text 0 0 "VBE.vcl1.s1.happy"
+process p1 -screen_dump
+
+process p1 -key END
+process p1 -expect-text 22 1 "   "
+process p1 -expect-text 4 1 "^^^"
+process p1 -screen_dump
+
+process p1 -key HOME
+process p1 -expect-text 22 1 "vvv"
+process p1 -expect-text 4 1 "   "
+process p1 -screen_dump
+
 process p1 -screen_dump -write {q} -wait
 process p2 -screen_dump -kill TERM -wait
 process p3 -screen_dump -kill HUP -wait

bin/varnishtest/vtc_process.c

@@ -964,6 +964,11 @@ process_close(struct process *p)
  *	expression from either output, consider using it if you only need
  *	to match one.
  *
+ * \-key KEYSYM
+ *      Send emulated key-press.
+ *      KEYSYM can be one of (NPAGE, PPAGE, HOME, END)
+ *
+ *
  * \-kill SIGNAL
  *	Send a signal to the process. The argument can be either
  *	the string "TERM", "INT", or "KILL" for SIGTERM, SIGINT or SIGKILL
@@ -1100,6 +1105,19 @@ cmd_process(CMD_ARGS)
 			p->log = 3;
 			continue;
 		}
+		if (!strcmp(*av, "-key")) {
+			if (!strcmp(av[1], "NPAGE"))
+				process_write(p, "\x1b\x5b\x36\x7e");
+			else if (!strcmp(av[1], "PPAGE"))
+				process_write(p, "\x1b\x5b\x35\x7e");
+			else if (!strcmp(av[1], "HOME"))
+				process_write(p, "\x1b\x4f\x48");
+			else if (!strcmp(av[1], "END"))
+				process_write(p, "\x1b\x4f\x46");
+			else
+				vtc_fatal(p->vl, "Unknown key %s", av[1]);
+			continue;
+		}
 		if (!strcmp(*av, "-kill")) {
 			process_kill(p, av[1]);
 			av++;