+ BOOST_CHECK (dcp::file_to_string("build/test/bad_config/2.16/config.xml.4") == fourth_write_xml);
+}
+
+
+BOOST_AUTO_TEST_CASE (config_backup_with_link_test)
+{
+ using namespace boost::filesystem;
+
+ ConfigRestorer cr;
+
+ auto base = path("build/test/bad_config");
+ auto version = base / "2.16";
+
+ Config::override_path = base;
+ Config::drop();
+
+ boost::filesystem::remove_all (base);
+
+ boost::filesystem::create_directories (version);
+ std::ofstream f (path(version / "config.xml").string().c_str());
+ f << "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
+ << "<Config>\n"
+ << "<Link>" << path(version / "actual.xml").string() << "</Link>\n"
+ << "</Config>\n";
+ f.close ();
+
+ Config::drop ();
+ /* Cause actual.xml to be backed up */
+ rewrite_bad_config ("actual.xml", "first write");
+ Config::instance ();
+
+ /* Make sure actual.xml was backed up to the right place */
+ BOOST_CHECK (boost::filesystem::exists(version / "actual.xml.1"));