testOutputIteratorAdapter.cpp

#include <iostream>
#include <map>
#include <vector>

#include "DGtal/base/Common.h"
#include "DGtal/base/BasicFunctors.h"
#include "DGtal/base/OutputIteratorAdapter.h"
#include "DGtal/base/IteratorAdapter.h"



using namespace std;
using namespace DGtal;

// Functions for testing class OutputIteratorAdapter.

bool testPairs()
{
  int nb = 0; 
  int nbok = 0; 

  typedef map<string,string> Map; 
  typedef pair<string,string> Pair; 

  //input
  Map m; 
  m.insert( Pair("Proudhon", "Pierre-Joseph" ) ); 
  m.insert( Pair("Reclus", "Élisée" ) ); 
  m.insert( Pair("Zamenhof", "Ludwik Lejzer" ) ); 

  typedef vector<string> Vec; 
  Vec v; 
  v.push_back( "P-J." ); 
  v.push_back( "E." ); 
  v.push_back( "L. L." ); 

  //result
  Map m2; 
  m2.insert( Pair("Proudhon", "P-J." ) ); 
  m2.insert( Pair("Reclus", "E.") ); 
  m2.insert( Pair("Zamenhof", "L. L." ) ); 

  {//test output iterator
  trace.beginBlock ( "OutputIteratorAdapter..." );

  typedef OutputIteratorAdapter<Map::iterator, Pair2ndMutator<string>, string> Adapter; 
  BOOST_CONCEPT_ASSERT(( boost::OutputIterator<Adapter, string> ));
  Pair2ndMutator<string> f; 
  Adapter  a( m.begin(), f ); 

  copy(v.begin(), v.end(), a); 

  bool flag; 
  flag = std::equal( m.begin(), m.end(), m2.begin() ); 
  nbok += (flag)?1:0;
  nb++;  

  trace.info() << "(" << nbok << "/" << nb << ")" << std::endl; 
  trace.endBlock();
  }
  
  {//test iterator
  trace.beginBlock ( "IteratorAdapter..." );

  Pair2ndMutator<string> f; 

  typedef IteratorAdapter<Map::iterator, Pair2ndMutator<string>, string> Adapter; 
  BOOST_CONCEPT_ASSERT(( boost::ForwardIterator<Adapter> ));

  //writting
  Adapter  a( m.begin(), f ); 
  copy(v.begin(), v.end(), a); 
  bool flag1 = std::equal( m.begin(), m.end(), m2.begin() );

  //reading
  Adapter aBegin( m.begin(), f);  
  Adapter aEnd( m.end(), f);  
  bool flag2 = std::equal( aBegin, aEnd, v.begin() ); 

  nbok += (flag1 && flag2)?1:0;
  nb++;  

  trace.info() << "(" << nbok << "/" << nb << ")" << std::endl; 
  trace.endBlock();
  }
  
  return (nb == nbok);
}

// Standard services - public :

int main( int argc, char** argv )
{
  trace.beginBlock ( "Testing class OutputIteratorAdapter" );
  trace.info() << "Args:";
  for ( int i = 0; i < argc; ++i )
    trace.info() << " " << argv[ i ];
  trace.info() << endl;

  bool res = testPairs()
  ; // && ... other tests
  trace.emphase() << ( res ? "Passed." : "Error." ) << endl;
  trace.endBlock();
  return res ? 0 : 1;
}
//                                                                           //