Add a check for correct metrics in smoke-test

test/101_cross_hosts_2_test.sh

@@ -24,5 +24,6 @@ weave_on  $HOST2 attach $C2/24 c2
 
 wait_for_x network_tester_status "network tester status"
 assert "echo $status" "pass"
+assert "connections_metric $HOST1 state=\\\"established\\\"" "1"
 
 end_suite

test/config.sh

@@ -267,6 +267,10 @@ wait_for_attached() {
     wait_for_x "check_attached $1 $2" "$2 on $1 to be attached"
 }
 
+connections_metric() {
+    $SSH $1 curl -sS http://127.0.0.1:6784/metrics | awk -e "/^weave_connections.*$2/ { print \$2 }"
+}
+
 # assert_dns_record <host> <container> <name> [<ip> ...]
 assert_dns_record() {
     local host=$1