+
+void
+check_int_close (int a, int b, int d)
+{
+ BOOST_CHECK_MESSAGE (std::abs(a - b) < d, a << " differs from " << b << " by more than " << d);
+}
+
+
+void
+check_int_close (std::pair<int, int> a, std::pair<int, int> b, int d)
+{
+ check_int_close (a.first, b.first, d);
+ check_int_close (a.second, b.second, d);
+}
+
+
+ConfigRestorer::~ConfigRestorer()
+{
+ setup_test_config();
+}
+
+
+boost::filesystem::path
+find_file (boost::filesystem::path dir, string filename_part)
+{
+ boost::optional<boost::filesystem::path> found;
+ for (auto i: boost::filesystem::directory_iterator(dir)) {
+ if (i.path().filename().string().find(filename_part) != string::npos) {
+ BOOST_REQUIRE (!found);
+ found = i;
+ }
+ }
+ BOOST_REQUIRE (found);
+ return *found;
+}
+
+
+Editor::Editor(boost::filesystem::path path)
+ : _path(path)
+ , _content(dcp::file_to_string(path))
+{
+
+}
+
+Editor::~Editor()
+{
+ auto f = fopen(_path.string().c_str(), "w");
+ BOOST_REQUIRE(f);
+ fwrite(_content.c_str(), _content.length(), 1, f);
+ fclose(f);
+}
+
+void
+Editor::replace(string a, string b)
+{
+ auto old_content = _content;
+ boost::algorithm::replace_all(_content, a, b);
+ BOOST_REQUIRE(_content != old_content);
+}