Backup more than one config on failure to load.

1 files changed, 90 insertions, 0 deletions

diff --git a/test/config_test.cc b/test/config_test.cc
new file mode 100644
index 000000000..25e8c7d9d
--- /dev/null
+++ b/test/config_test.cc
@@ -0,0 +1,90 @@
+/*
+    Copyright (C) 2018 Carl Hetherington <cth@carlh.net>
+
+    This file is part of DCP-o-matic.
+
+    DCP-o-matic 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 2 of the License, or
+    (at your option) any later version.
+
+    DCP-o-matic 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 DCP-o-matic.  If not, see <http://www.gnu.org/licenses/>.
+
+*/
+
+#include "lib/config.h"
+#include <boost/test/unit_test.hpp>
+#include <fstream>
+
+using std::ofstream;
+
+static void
+rewrite_bad_config ()
+{
+	boost::system::error_code ec;
+	boost::filesystem::remove ("build/test/config.xml", ec);
+
+	Config::test_path = "build/test";
+	ofstream f ("build/test/config.xml");
+	f << "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
+	  << "<Config>\n"
+	  << "<Foo></Foo>\n"
+	  << "</Config>\n";
+	f.close ();
+}
+
+
+BOOST_AUTO_TEST_CASE (config_backup_test)
+{
+	Config::drop();
+
+	boost::system::error_code ec;
+	boost::filesystem::remove ("build/test/config.xml.1", ec);
+	boost::filesystem::remove ("build/test/config.xml.2", ec);
+	boost::filesystem::remove ("build/test/config.xml.3", ec);
+	boost::filesystem::remove ("build/test/config.xml.4", ec);
+	boost::filesystem::remove ("build/test/config.xml.5", ec);
+	boost::filesystem::remove ("build/test/config.xml.5", ec);
+
+	rewrite_bad_config();
+
+	Config::instance();
+
+	BOOST_CHECK ( boost::filesystem::exists ("build/test/config.xml.1"));
+	BOOST_CHECK (!boost::filesystem::exists ("build/test/config.xml.2"));
+	BOOST_CHECK (!boost::filesystem::exists ("build/test/config.xml.3"));
+	BOOST_CHECK (!boost::filesystem::exists ("build/test/config.xml.4"));
+
+	Config::drop();
+	rewrite_bad_config();
+	Config::instance();
+
+	BOOST_CHECK ( boost::filesystem::exists ("build/test/config.xml.1"));
+	BOOST_CHECK ( boost::filesystem::exists ("build/test/config.xml.2"));
+	BOOST_CHECK (!boost::filesystem::exists ("build/test/config.xml.3"));
+	BOOST_CHECK (!boost::filesystem::exists ("build/test/config.xml.4"));
+
+	Config::drop();
+	rewrite_bad_config();
+	Config::instance();
+
+	BOOST_CHECK ( boost::filesystem::exists ("build/test/config.xml.1"));
+	BOOST_CHECK ( boost::filesystem::exists ("build/test/config.xml.2"));
+	BOOST_CHECK ( boost::filesystem::exists ("build/test/config.xml.3"));
+	BOOST_CHECK (!boost::filesystem::exists ("build/test/config.xml.4"));
+
+	Config::drop();
+	rewrite_bad_config();
+	Config::instance();
+
+	BOOST_CHECK (boost::filesystem::exists ("build/test/config.xml.1"));
+	BOOST_CHECK (boost::filesystem::exists ("build/test/config.xml.2"));
+	BOOST_CHECK (boost::filesystem::exists ("build/test/config.xml.3"));
+	BOOST_CHECK (boost::filesystem::exists ("build/test/config.xml.4"));
+}