Test more robustly.

src/tests/vdp.vtc

@@ -92,28 +92,28 @@ Enim per accumsan, augue id maecenas bibendum ullamcorper in fermentum, platea f
 
 logexpect l1 -v v1 -g vxid -d 1 -q {Notice ~ "^vdfp_pipe: vdp cat:"} {
 	expect 0 * Begin  {^req \d+ rxreq$}
-	expect * = Notice {^vdfp_pipe: vdp cat: exec'd /bin/cat as pid \d+$}
-	expect * = Notice {^vdfp_pipe: vdp cat: /bin/cat exited with status 0$}
+	expect * = Notice {^vdfp_pipe: vdp cat: exec'd ${cat} as pid \d+$}
+	expect * = Notice {^vdfp_pipe: vdp cat: ${cat} exited with status 0$}
 	expect * = End
 
 	expect 0 * Begin  {^req \d+ rxreq$}
-	expect * = Notice {^vdfp_pipe: vdp cat: exec'd /bin/cat as pid \d+$}
-	expect * = Notice {^vdfp_pipe: vdp cat: /bin/cat exited with status 0$}
+	expect * = Notice {^vdfp_pipe: vdp cat: exec'd ${cat} as pid \d+$}
+	expect * = Notice {^vdfp_pipe: vdp cat: ${cat} exited with status 0$}
 	expect * = End
 
 	expect 0 * Begin  {^req \d+ rxreq$}
-	expect * = Notice {^vdfp_pipe: vdp cat: exec'd /bin/cat as pid \d+$}
-	expect * = Notice {^vdfp_pipe: vdp cat: /bin/cat exited with status 0$}
+	expect * = Notice {^vdfp_pipe: vdp cat: exec'd ${cat} as pid \d+$}
+	expect * = Notice {^vdfp_pipe: vdp cat: ${cat} exited with status 0$}
 	expect * = End
 
 	expect 0 * Begin  {^req \d+ rxreq$}
-	expect * = Notice {^vdfp_pipe: vdp cat: exec'd /bin/cat as pid \d+$}
-	expect * = Notice {^vdfp_pipe: vdp cat: /bin/cat exited with status 0$}
+	expect * = Notice {^vdfp_pipe: vdp cat: exec'd ${cat} as pid \d+$}
+	expect * = Notice {^vdfp_pipe: vdp cat: ${cat} exited with status 0$}
 	expect * = End
 
 	expect 0 * Begin  {^req \d+ rxreq$}
-	expect * = Notice {^vdfp_pipe: vdp cat: exec'd /bin/cat as pid \d+$}
-	expect * = Notice {^vdfp_pipe: vdp cat: /bin/cat exited with status 0$}
+	expect * = Notice {^vdfp_pipe: vdp cat: exec'd ${cat} as pid \d+$}
+	expect * = Notice {^vdfp_pipe: vdp cat: ${cat} exited with status 0$}
 	expect * = End
 } -run