/* -*- mode: C++; indent-tabs-mode: nil; -*-

  *

  * 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.

  *

  */

 #include <lemon/concepts/graph.h>

 #include <lemon/list_graph.h>

 #include <lemon/smart_graph.h>

 #include <lemon/full_graph.h>

 #include <lemon/grid_graph.h>

 #include "test_tools.h"

 #include "graph_test.h"

 using namespace lemon;

 using namespace lemon::concepts;

 template <class Graph>

 void checkGraph() {

   TEMPLATE_GRAPH_TYPEDEFS(Graph);

   Graph G;

   checkGraphNodeList(G, 0);

   checkGraphEdgeList(G, 0);

   Node

     n1 = G.addNode(),

     n2 = G.addNode(),

     n3 = G.addNode();

   checkGraphNodeList(G, 3);

   checkGraphEdgeList(G, 0);

   Edge e1 = G.addEdge(n1, n2);

   check((G.u(e1) == n1 && G.v(e1) == n2) || (G.u(e1) == n2 && G.v(e1) == n1),

         "Wrong edge");

   checkGraphNodeList(G, 3);

   checkGraphArcList(G, 2);

   checkGraphEdgeList(G, 1);

   checkGraphOutArcList(G, n1, 1);

   checkGraphOutArcList(G, n2, 1);

   checkGraphOutArcList(G, n3, 0);

   checkGraphInArcList(G, n1, 1);

   checkGraphInArcList(G, n2, 1);

   checkGraphInArcList(G, n3, 0);

   checkGraphIncEdgeList(G, n1, 1);

   checkGraphIncEdgeList(G, n2, 1);

   checkGraphIncEdgeList(G, n3, 0);

   checkGraphConArcList(G, 2);

   checkGraphConEdgeList(G, 1);

   Edge e2 = G.addEdge(n2, n1), e3 = G.addEdge(n2, n3);

   checkGraphNodeList(G, 3);

   checkGraphArcList(G, 6);

   checkGraphEdgeList(G, 3);

   checkGraphOutArcList(G, n1, 2);

   checkGraphOutArcList(G, n2, 3);

   checkGraphOutArcList(G, n3, 1);

   checkGraphInArcList(G, n1, 2);

   checkGraphInArcList(G, n2, 3);

   checkGraphInArcList(G, n3, 1);

   checkGraphIncEdgeList(G, n1, 2);

   checkGraphIncEdgeList(G, n2, 3);

   checkGraphIncEdgeList(G, n3, 1);

   checkGraphConArcList(G, 6);

   checkGraphConEdgeList(G, 3);

   checkArcDirections(G);

   checkNodeIds(G);

   checkArcIds(G);

   checkEdgeIds(G);

   checkGraphNodeMap(G);

   checkGraphArcMap(G);

   checkGraphEdgeMap(G);

 }

 void checkFullGraph(int num) {

   typedef FullGraph Graph;

   GRAPH_TYPEDEFS(Graph);

   Graph G(num);

   checkGraphNodeList(G, num);

   checkGraphEdgeList(G, num * (num - 1) / 2);

   for (NodeIt n(G); n != INVALID; ++n) {

     checkGraphOutArcList(G, n, num - 1);    

     checkGraphInArcList(G, n, num - 1);    

     checkGraphIncEdgeList(G, n, num - 1);    

   }

   checkGraphConArcList(G, num * (num - 1));

   checkGraphConEdgeList(G, num * (num - 1) / 2);

   checkArcDirections(G);

   checkNodeIds(G);

   checkArcIds(G);

   checkEdgeIds(G);

   checkGraphNodeMap(G);

   checkGraphArcMap(G);

   checkGraphEdgeMap(G);

   for (int i = 0; i < G.nodeNum(); ++i) {

     check(G.index(G(i)) == i, "Wrong index");

   }

   for (NodeIt u(G); u != INVALID; ++u) {

     for (NodeIt v(G); v != INVALID; ++v) {

       Edge e = G.edge(u, v);

       Arc a = G.arc(u, v);

       if (u == v) {

         check(e == INVALID, "Wrong edge lookup");

         check(a == INVALID, "Wrong arc lookup");

       } else {

         check((G.u(e) == u && G.v(e) == v) ||

               (G.u(e) == v && G.v(e) == u), "Wrong edge lookup");

         check(G.source(a) == u && G.target(a) == v, "Wrong arc lookup");

       }

     }

   }

 }

 void checkConcepts() {

   { // Checking graph components

     checkConcept<BaseGraphComponent, BaseGraphComponent >();

     checkConcept<IDableGraphComponent<>,

       IDableGraphComponent<> >();

     checkConcept<IterableGraphComponent<>,

       IterableGraphComponent<> >();

     checkConcept<MappableGraphComponent<>,

       MappableGraphComponent<> >();

   }

   { // Checking skeleton graph

     checkConcept<Graph, Graph>();

   }

   { // Checking ListGraph

     checkConcept<Graph, ListGraph>();

     checkConcept<AlterableGraphComponent<>, ListGraph>();

     checkConcept<ExtendableGraphComponent<>, ListGraph>();

     checkConcept<ClearableGraphComponent<>, ListGraph>();

     checkConcept<ErasableGraphComponent<>, ListGraph>();

   }

   { // Checking SmartGraph

     checkConcept<Graph, SmartGraph>();

     checkConcept<AlterableGraphComponent<>, SmartGraph>();

     checkConcept<ExtendableGraphComponent<>, SmartGraph>();

     checkConcept<ClearableGraphComponent<>, SmartGraph>();

   }

   { // Checking FullGraph

     checkConcept<Graph, FullGraph>();

   }

   { // Checking GridGraph

     checkConcept<Graph, GridGraph>();

   }

 }

 template <typename Graph>

 void checkGraphValidity() {

   TEMPLATE_GRAPH_TYPEDEFS(Graph);

   Graph g;

   Node

     n1 = g.addNode(),

     n2 = g.addNode(),

     n3 = g.addNode();

   Edge

     e1 = g.addEdge(n1, n2),

     e2 = g.addEdge(n2, n3);

   check(g.valid(n1), "Wrong validity check");

   check(g.valid(e1), "Wrong validity check");

   check(g.valid(g.direct(e1, true)), "Wrong validity check");

   check(!g.valid(g.nodeFromId(-1)), "Wrong validity check");

   check(!g.valid(g.edgeFromId(-1)), "Wrong validity check");

   check(!g.valid(g.arcFromId(-1)), "Wrong validity check");

 }

 template <typename Graph>

 void checkGraphValidityErase() {

   TEMPLATE_GRAPH_TYPEDEFS(Graph);

   Graph g;

   Node

     n1 = g.addNode(),

     n2 = g.addNode(),

     n3 = g.addNode();

   Edge

     e1 = g.addEdge(n1, n2),

     e2 = g.addEdge(n2, n3);

   check(g.valid(n1), "Wrong validity check");

   check(g.valid(e1), "Wrong validity check");

   check(g.valid(g.direct(e1, true)), "Wrong validity check");

   g.erase(n1);

   check(!g.valid(n1), "Wrong validity check");

   check(g.valid(n2), "Wrong validity check");

   check(g.valid(n3), "Wrong validity check");

   check(!g.valid(e1), "Wrong validity check");

   check(g.valid(e2), "Wrong validity check");

   check(!g.valid(g.nodeFromId(-1)), "Wrong validity check");

   check(!g.valid(g.edgeFromId(-1)), "Wrong validity check");

   check(!g.valid(g.arcFromId(-1)), "Wrong validity check");

 }

 void checkGridGraph(int width, int height) {

   typedef GridGraph Graph;

   GRAPH_TYPEDEFS(Graph);

   Graph G(width, height);

   check(G.width() == width, "Wrong column number");

   check(G.height() == height, "Wrong row number");

   for (int i = 0; i < width; ++i) {

     for (int j = 0; j < height; ++j) {

       check(G.col(G(i, j)) == i, "Wrong column");

       check(G.row(G(i, j)) == j, "Wrong row");

       check(G.pos(G(i, j)).x == i, "Wrong column");

       check(G.pos(G(i, j)).y == j, "Wrong row");

     }

   }

   for (int j = 0; j < height; ++j) {

     for (int i = 0; i < width - 1; ++i) {

       check(G.source(G.right(G(i, j))) == G(i, j), "Wrong right");

       check(G.target(G.right(G(i, j))) == G(i + 1, j), "Wrong right");

     }

     check(G.right(G(width - 1, j)) == INVALID, "Wrong right");

   }

   for (int j = 0; j < height; ++j) {

     for (int i = 1; i < width; ++i) {

       check(G.source(G.left(G(i, j))) == G(i, j), "Wrong left");

       check(G.target(G.left(G(i, j))) == G(i - 1, j), "Wrong left");

     }

     check(G.left(G(0, j)) == INVALID, "Wrong left");

   }

   for (int i = 0; i < width; ++i) {

     for (int j = 0; j < height - 1; ++j) {

       check(G.source(G.up(G(i, j))) == G(i, j), "Wrong up");

       check(G.target(G.up(G(i, j))) == G(i, j + 1), "Wrong up");

     }

     check(G.up(G(i, height - 1)) == INVALID, "Wrong up");

   }

   for (int i = 0; i < width; ++i) {

     for (int j = 1; j < height; ++j) {

       check(G.source(G.down(G(i, j))) == G(i, j), "Wrong down");

       check(G.target(G.down(G(i, j))) == G(i, j - 1), "Wrong down");

     }

     check(G.down(G(i, 0)) == INVALID, "Wrong down");

   }

   checkGraphNodeList(G, width * height);

   checkGraphEdgeList(G, width * (height - 1) + (width - 1) * height);

   checkGraphArcList(G, 2 * (width * (height - 1) + (width - 1) * height));

   for (NodeIt n(G); n != INVALID; ++n) {

     int nb = 4;

     if (G.col(n) == 0) --nb;

     if (G.col(n) == width - 1) --nb;

     if (G.row(n) == 0) --nb;

     if (G.row(n) == height - 1) --nb;

     checkGraphOutArcList(G, n, nb);

     checkGraphInArcList(G, n, nb);

     checkGraphIncEdgeList(G, n, nb);

   }

   checkArcDirections(G);

   checkGraphConArcList(G, 2 * (width * (height - 1) + (width - 1) * height));

   checkGraphConEdgeList(G, width * (height - 1) + (width - 1) * height);

   checkNodeIds(G);

   checkArcIds(G);

   checkEdgeIds(G);

   checkGraphNodeMap(G);

   checkGraphArcMap(G);

   checkGraphEdgeMap(G);

 }

 void checkGraphs() {

   { // Checking ListGraph

     checkGraph<ListGraph>();

     checkGraphValidityErase<ListGraph>();

   }

   { // Checking SmartGraph

     checkGraph<SmartGraph>();

     checkGraphValidity<SmartGraph>();

   }

   { // Checking FullGraph   

     checkFullGraph(7);

     checkFullGraph(8);

   }

   { // Checking GridGraph

     checkGridGraph(5, 8);

     checkGridGraph(8, 5);

     checkGridGraph(5, 5);

     checkGridGraph(0, 0);

     checkGridGraph(1, 1);

   }

 }

 int main() {

   checkConcepts();

   checkGraphs();

   return 0;

 }