face: congestion detection in TCP, UDP, and Unix socket transports

refs #4362

Change-Id: Idaa5d65e1f33663d95bad56de42640183b2cda6d
diff --git a/tests/daemon/face/stream-transport.t.cpp b/tests/daemon/face/stream-transport.t.cpp
index 33baec1..6628b92 100644
--- a/tests/daemon/face/stream-transport.t.cpp
+++ b/tests/daemon/face/stream-transport.t.cpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /*
- * Copyright (c) 2014-2017,  Regents of the University of California,
+ * Copyright (c) 2014-2018,  Regents of the University of California,
  *                           Arizona Board of Regents,
  *                           Colorado State University,
  *                           University Pierre & Marie Curie, Sorbonne University,
@@ -214,6 +214,13 @@
   BOOST_REQUIRE_EQUAL(this->limitedIo.run(1, time::seconds(1)), LimitedIo::EXCEED_OPS);
 }
 
+BOOST_FIXTURE_TEST_CASE_TEMPLATE(SendQueueLength, T, StreamTransportFixtures, T)
+{
+  TRANSPORT_TEST_INIT();
+
+  BOOST_CHECK_EQUAL(this->transport->getSendQueueLength(), 0);
+}
+
 BOOST_AUTO_TEST_SUITE_END() // TestStreamTransport
 BOOST_AUTO_TEST_SUITE_END() // Face