tests: ignore ParametersSha256DigestComponent in name prefix check

Plus various minor cleanups

Change-Id: I0907eb80a550a663fbef2ff0a7e24a40614e8655
diff --git a/tests/unit-tests/challenge-pin.t.cpp b/tests/unit-tests/challenge-pin.t.cpp
index 95c7259..35466ff 100644
--- a/tests/unit-tests/challenge-pin.t.cpp
+++ b/tests/unit-tests/challenge-pin.t.cpp
@@ -1,5 +1,5 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
-/**
+/*
  * Copyright (c) 2017-2019, Regents of the University of California.
  *
  * This file is part of ndncert, a certificate management system based on NDN.
@@ -19,6 +19,7 @@
  */
 
 #include "challenge-module/challenge-pin.hpp"
+
 #include "identity-management-fixture.hpp"
 
 namespace ndn {
@@ -27,7 +28,7 @@
 
 BOOST_FIXTURE_TEST_SUITE(TestChallengePin, IdentityManagementFixture)
 
-BOOST_AUTO_TEST_CASE(TestGetInitInfo)
+BOOST_AUTO_TEST_CASE(ChallengeType)
 {
   ChallengePin challenge;
   BOOST_CHECK_EQUAL(challenge.CHALLENGE_TYPE, "PIN");