tests: refactor EthernetFixture

Also, use BOOST_TEST_INFO_SCOPE in a few places.

Change-Id: I113f326207825949ed9d3d22ade0654976d49b76
diff --git a/tests/daemon/mgmt/face-manager.t.cpp b/tests/daemon/mgmt/face-manager.t.cpp
index 140b1c6..d73dc24 100644
--- a/tests/daemon/mgmt/face-manager.t.cpp
+++ b/tests/daemon/mgmt/face-manager.t.cpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /*
- * Copyright (c) 2014-2022,  Regents of the University of California,
+ * Copyright (c) 2014-2023,  Regents of the University of California,
  *                           Arizona Board of Regents,
  *                           Colorado State University,
  *                           University Pierre & Marie Curie, Sorbonne University,
@@ -60,8 +60,9 @@
     RANDOMIZE_COUNTERS       = 1 << 3,
   };
 
-  /** \brief Adds a face to the FaceTable.
-   *  \param options bitwise OR'ed AddFaceFlags
+  /**
+   * \brief Adds a face to the FaceTable.
+   * \param flags bitwise OR'ed AddFaceFlags
    */
   shared_ptr<Face>
   addFace(unsigned int flags = 0)
@@ -169,6 +170,7 @@
   std::set<FaceId> faceIds;
   for (size_t idx = 0; idx < nEntries; ++idx) {
     ndn::nfd::FaceStatus decodedStatus(content.elements()[idx]);
+    BOOST_TEST_INFO_SCOPE(decodedStatus);
     BOOST_CHECK(m_faceTable.get(decodedStatus.getFaceId()) != nullptr);
     faceIds.insert(decodedStatus.getFaceId());
   }
@@ -330,6 +332,7 @@
 
   for (size_t idx = 0; idx < nEntries; ++idx) {
     ndn::nfd::ChannelStatus decodedStatus(content.elements()[idx]);
+    BOOST_TEST_INFO_SCOPE(decodedStatus);
     BOOST_CHECK(addedChannels.find(decodedStatus.getLocalUri()) != addedChannels.end());
   }
 }