diff --git a/test/test_tools.h b/test/test_tools.h
new file mode 100644
--- /dev/null
+++ b/test/test_tools.h
@@ -0,0 +1,48 @@
+/* -*- C++ -*-
+ *
+ * This file is a part of LEMON, a generic C++ optimization library
+ *
+ * Copyright (C) 2003-2007
+ * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
+ * (Egervary Research Group on Combinatorial Optimization, EGRES).
+ *
+ * Permission to use, modify and distribute this software is granted
+ * provided that this copyright notice appears in all copies. For
+ * precise terms see the accompanying LICENSE file.
+ *
+ * This software is provided "AS IS" with no warranty of any kind,
+ * express or implied, and with no claim as to its suitability for any
+ * purpose.
+ *
+ */
+
+#ifndef LEMON_TEST_TEST_TOOLS_H
+#define LEMON_TEST_TEST_TOOLS_H
+
+#include <iostream>
+
+//! \ingroup misc
+//! \file
+//! \brief Some utilities to write test programs.
+
+
+///If \c rc is fail, writes an error message end exit.
+
+///If \c rc is fail, writes an error message end exit.
+///The error message contains the file name and the line number of the
+///source code in a standard from, which makes it possible to go there
+///using good source browsers like e.g. \c emacs.
+///
+///For example
+///\code check(0==1,"This is obviously false.");\endcode will
+///print this (and then exits).
+///\verbatim graph_test.cc:123: error: This is obviously false. \endverbatim
+///
+///\todo It should be in \c error.h
+#define check(rc, msg) \
+  if(!(rc)) { \
+    std::cerr << __FILE__ ":" << __LINE__ << ": error: " << msg << std::endl; \
+    abort(); \
+  } else { } \
+
+#endif