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, 169 insertions, 0 deletions

diff --git a/lemon/test/lgf_test.cc b/lemon/test/lgf_test.cc
new file mode 100644
index 0000000..c1f373a
--- /dev/null
+++ b/lemon/test/lgf_test.cc
@@ -0,0 +1,169 @@
+/* -*- mode: C++; indent-tabs-mode: nil; -*-
+ *
+ * This file is a part of LEMON, a generic C++ optimization library.
+ *
+ * Copyright (C) 2003-2011
+ * 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 <lemon/list_graph.h>
+#include <lemon/lgf_reader.h>
+#include "test_tools.h"
+
+using namespace lemon;
+
+char test_lgf[] =
+  "@nodes\n"
+  "label\n"
+  "0\n"
+  "1\n"
+  "@arcs\n"
+  "     label\n"
+  "0 1  0\n"
+  "1 0  1\n"
+  "@attributes\n"
+  "source 0\n"
+  "target 1\n";
+
+char test_lgf_nomap[] =
+  "@nodes\n"
+  "label\n"
+  "0\n"
+  "1\n"
+  "@arcs\n"
+  "     -\n"
+  "0 1\n";
+
+char test_lgf_bad1[] =
+  "@nodes\n"
+  "label\n"
+  "0\n"
+  "1\n"
+  "@arcs\n"
+  "     - another\n"
+  "0 1\n";
+
+char test_lgf_bad2[] =
+  "@nodes\n"
+  "label\n"
+  "0\n"
+  "1\n"
+  "@arcs\n"
+  "     label -\n"
+  "0 1\n";
+
+
+int main()
+{
+  {
+    ListDigraph d;
+    ListDigraph::Node s,t;
+    ListDigraph::ArcMap<int> label(d);
+    std::istringstream input(test_lgf);
+    digraphReader(d, input).
+      node("source", s).
+      node("target", t).
+      arcMap("label", label).
+      run();
+    check(countNodes(d) == 2,"There should be 2 nodes");
+    check(countArcs(d) == 2,"There should be 2 arcs");
+  }
+  {
+    ListGraph g;
+    ListGraph::Node s,t;
+    ListGraph::EdgeMap<int> label(g);
+    std::istringstream input(test_lgf);
+    graphReader(g, input).
+      node("source", s).
+      node("target", t).
+      edgeMap("label", label).
+      run();
+    check(countNodes(g) == 2,"There should be 2 nodes");
+    check(countEdges(g) == 2,"There should be 2 arcs");
+  }
+
+  {
+    ListDigraph d;
+    std::istringstream input(test_lgf_nomap);
+    digraphReader(d, input).
+      run();
+    check(countNodes(d) == 2,"There should be 2 nodes");
+    check(countArcs(d) == 1,"There should be 1 arc");
+  }
+  {
+    ListGraph g;
+    std::istringstream input(test_lgf_nomap);
+    graphReader(g, input).
+      run();
+    check(countNodes(g) == 2,"There should be 2 nodes");
+    check(countEdges(g) == 1,"There should be 1 edge");
+  }
+
+  {
+    ListDigraph d;
+    std::istringstream input(test_lgf_bad1);
+    bool ok=false;
+    try {
+      digraphReader(d, input).
+        run();
+    }
+    catch (FormatError&)
+      {
+        ok = true;
+      }
+    check(ok,"FormatError exception should have occured");
+  }
+  {
+    ListGraph g;
+    std::istringstream input(test_lgf_bad1);
+    bool ok=false;
+    try {
+      graphReader(g, input).
+        run();
+    }
+    catch (FormatError&)
+      {
+        ok = true;
+      }
+    check(ok,"FormatError exception should have occured");
+  }
+
+  {
+    ListDigraph d;
+    std::istringstream input(test_lgf_bad2);
+    bool ok=false;
+    try {
+      digraphReader(d, input).
+        run();
+    }
+    catch (FormatError&)
+      {
+        ok = true;
+      }
+    check(ok,"FormatError exception should have occured");
+  }
+  {
+    ListGraph g;
+    std::istringstream input(test_lgf_bad2);
+    bool ok=false;
+    try {
+      graphReader(g, input).
+        run();
+    }
+    catch (FormatError&)
+      {
+        ok = true;
+      }
+    check(ok,"FormatError exception should have occured");
+  }
+}