tests: refactor common test infrastructure and fixtures

Change-Id: I597c11130eefa2cc2846ee6655c85dc04f2f22ef
diff --git a/tests/unit/ims/in-memory-storage-persistent.t.cpp b/tests/unit/ims/in-memory-storage-persistent.t.cpp
index 3758cc2..d0cabf9 100644
--- a/tests/unit/ims/in-memory-storage-persistent.t.cpp
+++ b/tests/unit/ims/in-memory-storage-persistent.t.cpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /*
- * Copyright (c) 2013-2018 Regents of the University of California.
+ * Copyright (c) 2013-2020 Regents of the University of California.
  *
  * This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
  *
@@ -21,8 +21,7 @@
 
 #include "ndn-cxx/ims/in-memory-storage-persistent.hpp"
 
-#include "tests/boost-test.hpp"
-#include "tests/make-interest-data.hpp"
+#include "tests/test-common.hpp"
 
 namespace ndn {
 namespace tests {