[Lemon-commits] Peter Kovacs: Port dijkstra_test.cc from SVN -r3499

[Lemon HG]

details:   http://lemon.cs.elte.hu/hg/lemon/rev/91fb4372688f
changeset: 170:91fb4372688f
user:      Peter Kovacs <kpeter [at] inf.elte.hu>
date:      Sun Jun 15 22:03:33 2008 +0200
description:
	Port dijkstra_test.cc from SVN -r3499

diffstat:

3 files changed, 143 insertions(+)
test/CMakeLists.txt   |    1 
test/Makefile.am      |    2 
test/dijkstra_test.cc |  140 +++++++++++++++++++++++++++++++++++++++++++++++++

diffs (174 lines):

diff -r 5b507a86ad72 -r 91fb4372688f test/CMakeLists.txt
--- a/test/CMakeLists.txt	Sun Jun 15 09:19:53 2008 +0200
+++ b/test/CMakeLists.txt	Sun Jun 15 22:03:33 2008 +0200
@@ -7,6 +7,7 @@
   counter_test
   dfs_test
   digraph_test
+  dijkstra_test
   dim_test
   error_test
   graph_test
diff -r 5b507a86ad72 -r 91fb4372688f test/Makefile.am
--- a/test/Makefile.am	Sun Jun 15 09:19:53 2008 +0200
+++ b/test/Makefile.am	Sun Jun 15 22:03:33 2008 +0200
@@ -13,6 +13,7 @@
         test/counter_test \
 	test/dfs_test \
 	test/digraph_test \
+	test/dijkstra_test \
         test/dim_test \
 	test/error_test \
 	test/graph_test \
@@ -33,6 +34,7 @@
 test_counter_test_SOURCES = test/counter_test.cc
 test_dfs_test_SOURCES = test/dfs_test.cc
 test_digraph_test_SOURCES = test/digraph_test.cc
+test_dijkstra_test_SOURCES = test/dijkstra_test.cc
 test_dim_test_SOURCES = test/dim_test.cc
 test_error_test_SOURCES = test/error_test.cc
 test_graph_test_SOURCES = test/graph_test.cc
diff -r 5b507a86ad72 -r 91fb4372688f test/dijkstra_test.cc
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/dijkstra_test.cc	Sun Jun 15 22:03:33 2008 +0200
@@ -0,0 +1,140 @@
+/* -*- C++ -*-
+ *
+ * This file is a part of LEMON, a generic C++ optimization library
+ *
+ * Copyright (C) 2003-2008
+ * 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.
+ *
+ */
+
+///\file
+///\brief Test cases for Dijkstra algorithm.
+
+#include <lemon/concepts/digraph.h>
+#include <lemon/smart_graph.h>
+#include <lemon/list_graph.h>
+#include <lemon/graph_utils.h>
+#include <lemon/dijkstra.h>
+#include <lemon/path.h>
+
+#include "test_tools.h"
+
+using namespace lemon;
+
+void checkDijkstraCompile() 
+{
+  typedef int VType;
+  typedef concepts::Digraph Digraph;
+  typedef concepts::ReadMap<Digraph::Arc,VType> LengthMap;
+  typedef Dijkstra<Digraph, LengthMap> DType;
+  
+  Digraph G;
+  Digraph::Node n;
+  Digraph::Arc e;
+  VType l;
+  bool b;
+  DType::DistMap d(G);
+  DType::PredMap p(G);
+  //  DType::PredNodeMap pn(G);
+  LengthMap length;
+
+  DType dijkstra_test(G,length);
+
+  dijkstra_test.run(n);
+
+  l  = dijkstra_test.dist(n);
+  e  = dijkstra_test.predArc(n);
+  n  = dijkstra_test.predNode(n);
+  d  = dijkstra_test.distMap();
+  p  = dijkstra_test.predMap();
+  //  pn = dijkstra_test.predNodeMap();
+  b  = dijkstra_test.reached(n);
+
+  Path<Digraph> pp = dijkstra_test.path(n);
+}
+
+void checkDijkstraFunctionCompile() 
+{
+  typedef int VType;
+  typedef concepts::Digraph Digraph;
+  typedef Digraph::Arc Arc;
+  typedef Digraph::Node Node;
+  typedef concepts::ReadMap<Digraph::Arc,VType> LengthMap;
+   
+  Digraph g;
+  dijkstra(g,LengthMap(),Node()).run();
+  dijkstra(g,LengthMap()).source(Node()).run();
+  dijkstra(g,LengthMap())
+    .predMap(concepts::WriteMap<Node,Arc>())
+    .distMap(concepts::WriteMap<Node,VType>())
+    .run(Node());
+}
+
+template <class Digraph>
+void checkDijkstra() {    
+  TEMPLATE_DIGRAPH_TYPEDEFS(Digraph);
+  typedef typename Digraph::template ArcMap<int> LengthMap;
+
+  Digraph G;
+  Node s, t;
+  LengthMap length(G);
+  PetStruct<Digraph> ps = addPetersen(G, 5);
+   
+  for(int i=0;i<5;i++) {
+    length[ps.outcir[i]]=4;
+    length[ps.incir[i]]=1;
+    length[ps.chords[i]]=10;
+  }
+  s=ps.outer[0];
+  t=ps.inner[1];
+  
+  Dijkstra<Digraph, LengthMap> 
+	dijkstra_test(G, length);
+  dijkstra_test.run(s);
+  
+  check(dijkstra_test.dist(t)==13,"Dijkstra found a wrong path.");
+
+  Path<Digraph> p = dijkstra_test.path(t);
+  check(p.length()==4,"getPath() found a wrong path.");
+  check(checkPath(G, p),"path() found a wrong path.");
+  check(pathSource(G, p) == s,"path() found a wrong path.");
+  check(pathTarget(G, p) == t,"path() found a wrong path.");
+  
+  for(ArcIt e(G); e!=INVALID; ++e) {
+    Node u=G.source(e);
+    Node v=G.target(e);
+    check( !dijkstra_test.reached(u) || (dijkstra_test.dist(v) - dijkstra_test.dist(u) <= length[e]),
+	   "dist(target)-dist(source)-arc_length= " << dijkstra_test.dist(v) - dijkstra_test.dist(u) - length[e]);
+  }
+
+  for(NodeIt v(G); v!=INVALID; ++v){
+    check(dijkstra_test.reached(v),"Each node should be reached.");
+    if ( dijkstra_test.predArc(v)!=INVALID ) {
+      Arc e=dijkstra_test.predArc(v);
+      Node u=G.source(e);
+      check(u==dijkstra_test.predNode(v),"Wrong tree.");
+      check(dijkstra_test.dist(v) - dijkstra_test.dist(u) == length[e],
+	    "Wrong distance! Difference: " << std::abs(dijkstra_test.dist(v) - dijkstra_test.dist(u) - length[e]));
+    }
+  }
+  
+  {
+    NullMap<Node,Arc> myPredMap;
+    dijkstra(G,length).predMap(myPredMap).run(s);
+  }
+}
+
+int main() {
+  checkDijkstra<ListDigraph>();
+  checkDijkstra<SmartDigraph>();
+  return 0;
+}