Add the LEMON graph library source to the repo

I'll likely be using it, so this just makes it easier to get to from
elsewhere. If I end up not using it then I can just delete it.

1 files changed, 90 insertions, 0 deletions

diff --git a/lemon/test/error_test.cc b/lemon/test/error_test.cc
new file mode 100644
index 0000000..1527519
--- /dev/null
+++ b/lemon/test/error_test.cc
@@ -0,0 +1,90 @@
+/* -*- mode: C++; indent-tabs-mode: nil; -*-
+ *
+ * This file is a part of LEMON, a generic C++ optimization library.
+ *
+ * Copyright (C) 2003-2009
+ * 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.
+ *
+ */
+
+#include <iostream>
+
+#include <lemon/error.h>
+#include "test_tools.h"
+
+using namespace lemon;
+
+#ifdef LEMON_ENABLE_ASSERTS
+#undef LEMON_ENABLE_ASSERTS
+#endif
+
+#ifdef LEMON_DISABLE_ASSERTS
+#undef LEMON_DISABLE_ASSERTS
+#endif
+
+#ifdef NDEBUG
+#undef NDEBUG
+#endif
+
+//checking disabled asserts
+#define LEMON_DISABLE_ASSERTS
+#include <lemon/assert.h>
+
+void no_assertion_text_disable() {
+  LEMON_ASSERT(true, "This is a fault message");
+}
+
+void assertion_text_disable() {
+  LEMON_ASSERT(false, "This is a fault message");
+}
+
+void check_assertion_disable() {
+  no_assertion_text_disable();
+  assertion_text_disable();
+}
+#undef LEMON_DISABLE_ASSERTS
+
+//checking custom assert handler
+#define LEMON_ASSERT_CUSTOM
+
+static int cnt = 0;
+void my_assert_handler(const char*, int, const char*,
+                       const char*, const char*) {
+  ++cnt;
+}
+
+#define LEMON_CUSTOM_ASSERT_HANDLER my_assert_handler
+#include <lemon/assert.h>
+
+void no_assertion_text_custom() {
+  LEMON_ASSERT(true, "This is a fault message");
+}
+
+void assertion_text_custom() {
+  LEMON_ASSERT(false, "This is a fault message");
+}
+
+void check_assertion_custom() {
+  no_assertion_text_custom();
+  assertion_text_custom();
+  check(cnt == 1, "The custom assert handler does not work");
+}
+
+#undef LEMON_ASSERT_CUSTOM
+
+
+int main() {
+  check_assertion_disable();
+  check_assertion_custom();
+
+  return 0;
+}