tests: expand test coverage of EthernetFactory and UdpFactory

Change-Id: I469ac8682502ca7a0e360703b462bfb119eaedf1
diff --git a/tests/daemon/face/websocket-factory.t.cpp b/tests/daemon/face/websocket-factory.t.cpp
index c133671..b5104ea 100644
--- a/tests/daemon/face/websocket-factory.t.cpp
+++ b/tests/daemon/face/websocket-factory.t.cpp
@@ -286,16 +286,19 @@
   auto channel1a = createChannel("127.0.0.1", "20070");
   BOOST_CHECK_EQUAL(channel1, channel1a);
   BOOST_CHECK_EQUAL(channel1->getUri().toString(), "ws://127.0.0.1:20070");
+  BOOST_CHECK_EQUAL(factory.getChannels().size(), 1);
 
   auto channel2 = createChannel("127.0.0.1", "20071");
   BOOST_CHECK_NE(channel1, channel2);
+  BOOST_CHECK_EQUAL(factory.getChannels().size(), 2);
 
   auto channel3 = createChannel("::1", "20071");
   BOOST_CHECK_NE(channel2, channel3);
   BOOST_CHECK_EQUAL(channel3->getUri().toString(), "ws://[::1]:20071");
+  BOOST_CHECK_EQUAL(factory.getChannels().size(), 3);
 }
 
-BOOST_AUTO_TEST_CASE(UnsupportedCreateFace)
+BOOST_AUTO_TEST_CASE(CreateFace)
 {
   createFace(factory,
              FaceUri("ws://127.0.0.1:20070"),