Test that we capture stderr

src/tests/append.sh

@@ -2,10 +2,13 @@
 
 while read line
 do
+    echo >&2 append $1 while read
     echo $line
     sleep 1
     echo append $1
 done
+echo >&2 append $1 before final
 echo final $1
+echo >&2 append $1 after final
 
 exit 0

src/tests/append.vtc

@@ -27,6 +27,17 @@ varnish v1 -arg "-p debug=+syncvsl" -vcl+backend {
 	}
 } -start
 
+logexpect l1001 -v v1 -q "vxid == 1001" -i Error {
+	expect 0 1001 Error "stderr: append 1 while read$"
+	expect 0 =    Error "stderr: append 2 while read$"
+	expect 0 =    Error "stderr: append 2 while read$"
+	expect ? =    Error "stderr: append 2 while read$"
+	expect ? =    Error "stderr: append 2 before final$"
+	expect ? =    Error "stderr: append 2 after final$"
+	expect ? =    Error "stderr: append 1 before final$"
+	expect ? =    Error "stderr: append 1 after final$"
+} -start
+
 client c1 {
 	txreq
 	rxresp
@@ -41,3 +52,5 @@ final 2
 }
 
 } -run
+
+logexpect l1001 -wait
\ No newline at end of file