add test script for service chain order

Author: goldenrye

tests/transparent_services/test_service_chain.sh

@@ -0,0 +1,63 @@
+#! /bin/bash
+
+# check that the services are actually transverse on the right order
+
+source "${BASH_SOURCE%/*}/../helpers.bash"
+
+set -e
+set -x
+
+function cleanup {
+  set +e
+  polycubectl del th1
+  polycubectl del th2
+  polycubectl del th3
+  polycubectl del th4
+  polycubectl del th5
+  delete_veth 1
+  echo "FAIL"
+}
+trap cleanup EXIT
+
+create_veth 1
+
+polycubectl transparenthelloworld add th1 loglevel=TRACE
+polycubectl transparenthelloworld add th2 loglevel=TRACE
+polycubectl transparenthelloworld add th3 loglevel=TRACE
+polycubectl transparenthelloworld add th4 loglevel=TRACE
+polycubectl transparenthelloworld add th5 loglevel=TRACE
+
+polycubectl attach th3 veth1
+polycubectl attach th1 veth1 position=first
+polycubectl attach th5 veth1 position=last
+polycubectl attach th2 veth1 after=th1
+polycubectl attach th4 veth1 before=th5
+
+# verfiy the service chain order
+polycubectl topology show veth1 | egrep "ingress service chain: th1 ---> th2 ---> th3 ---> th4 ---> th5 ---> stack"
+polycubectl topology show veth1 | egrep "egress service chain: th5 ---> th4 ---> th3 ---> th2 ---> th1 ---> stack"
+
+# sudo ip netns exec ns1 ping 10.0.0.2 -c 1
+
+#TODO: verify the log output, expected log output
+#[2019-12-06 11:39:20.512] [Transparenthelloworld] [th1] [debug] Ingress: passing packet
+#[2019-12-06 11:39:20.512] [Transparenthelloworld] [th2] [debug] Ingress: passing packet
+#[2019-12-06 11:39:20.512] [Transparenthelloworld] [th3] [debug] Ingress: passing packet
+#[2019-12-06 11:39:20.512] [Transparenthelloworld] [th4] [debug] Ingress: passing packet
+#[2019-12-06 11:39:20.512] [Transparenthelloworld] [th5] [debug] Ingress: passing packet
+#[2019-12-06 11:39:20.512] [Transparenthelloworld] [th5] [debug] Egress: passing packet
+#[2019-12-06 11:39:20.512] [Transparenthelloworld] [th4] [debug] Egress: passing packet
+#[2019-12-06 11:39:20.512] [Transparenthelloworld] [th3] [debug] Egress: passing packet
+#[2019-12-06 11:39:20.512] [Transparenthelloworld] [th2] [debug] Egress: passing packet
+#[2019-12-06 11:39:20.512] [Transparenthelloworld] [th1] [debug] Egress: passing packet
+
+polycubectl del th1
+polycubectl del th2
+polycubectl del th3
+polycubectl del th4
+polycubectl del th5
+delete_veth 1
+
+set +x
+trap - EXIT
+echo "SUCCESS"