add a test for working with --no-dns

test/205_dns_disabled.sh

@@ -0,0 +1,24 @@
+#! /bin/bash
+
+. ./config.sh
+
+C1=10.2.0.87
+
+start_suite "Standard behaviour when weaveDNS is disabled"
+
+weave_on $HOST1 launch --no-dns
+
+assert "weave_on $HOST1 dns-args" ""
+
+C=$(start_container_with_dns $HOST1 $C1/24 --name=c1)
+
+# hostname is left untouched; equals short container id
+assert "exec_on $HOST1 c1 hostname" $(echo $C | cut -c1-12)
+
+# domainname is left empty
+assert "exec_on $HOST1 c1 dnsdomainname" ""
+
+# external name resolution works
+assert_raises "exec_on $HOST1 c1 getent hosts www.weave.works"
+
+end_suite