tests: sync global configuration with NFD

Change-Id: I29fafbf63300d65c967958f48123ea888d14b9b2
Refs: #4255
diff --git a/tests/global-configuration.cpp b/tests/global-configuration.cpp
new file mode 100644
index 0000000..d4ee782
--- /dev/null
+++ b/tests/global-configuration.cpp
@@ -0,0 +1,69 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/*
+ * Copyright (c) 2014-2018,  Regents of the University of California.
+ *
+ * This file is part of ndn-tools (Named Data Networking Essential Tools).
+ * See AUTHORS.md for complete list of ndn-tools authors and contributors.
+ *
+ * ndn-tools is free software: you can redistribute it and/or modify it under the terms
+ * of the GNU General Public License as published by the Free Software Foundation,
+ * either version 3 of the License, or (at your option) any later version.
+ *
+ * ndn-tools is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+ * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+ * PURPOSE.  See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * ndn-tools, e.g., in COPYING.md file.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "boost-test.hpp"
+
+#include <boost/filesystem.hpp>
+#include <fstream>
+#include <stdlib.h>
+
+namespace ndn {
+namespace tools {
+namespace tests {
+
+class GlobalConfiguration
+{
+public:
+  GlobalConfiguration()
+  {
+    const char* envHome = ::getenv("HOME");
+    if (envHome)
+      m_home = envHome;
+
+    boost::filesystem::path dir{TMP_TESTS_PATH};
+    dir /= "test-home";
+    ::setenv("HOME", dir.c_str(), 1);
+
+    boost::filesystem::create_directories(dir);
+    std::ofstream clientConf((dir / ".ndn" / "client.conf").c_str());
+    clientConf << "pib=pib-sqlite3" << std::endl
+               << "tpm=tpm-file" << std::endl;
+  }
+
+  ~GlobalConfiguration()
+  {
+    if (!m_home.empty())
+      ::setenv("HOME", m_home.data(), 1);
+  }
+
+private:
+  std::string m_home;
+};
+
+#if BOOST_VERSION >= 106500
+BOOST_TEST_GLOBAL_CONFIGURATION(GlobalConfiguration);
+#elif BOOST_VERSION >= 105900
+BOOST_GLOBAL_FIXTURE(GlobalConfiguration);
+#else
+BOOST_GLOBAL_FIXTURE(GlobalConfiguration)
+#endif
+
+} // namespace tests
+} // namespace tools
+} // namespace ndn