removefromsettest.cpp

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/*
  RemoveFromSet(Test)  -  algorithm removing predicated elements from set

   Copyright (C)
     2008,            Hermann Vosseler <Ichthyostega@web.de>

  **Lumiera** is free software; you can redistribute it and/or modify it
  under the terms of the GNU General Public License as published by the
  Free Software Foundation; either version 2 of the License, or (at your
  option) any later version. See the file COPYING for further details.

* *****************************************************************/

#include "lib/test/run.hpp"
#include "lib/util-foreach.hpp"
#include "lib/format-cout.hpp"
#include "lib/format-util.hpp"

#include <boost/lexical_cast.hpp>
#include <functional>
#include <string>
#include <set>

using util::join;
using std::function;
using std::string;



namespace util {
namespace test {
  
  using util::for_each;
  using boost::lexical_cast;
  
  
  using IntSet = std::set<uint>;
  
  void 
  show (IntSet const& coll)
  {
    cout << "[ "
         << join (coll)
         << " ]" <<endl;
  }
  
  function<bool(uint)>
  select_match (string description) 
  {
    return [&](uint candidate) 
            {
              return string::npos != description.find( lexical_cast<string> (candidate));
            };
  }
  
  
  
  class RemoveFromSet_test : public Test
    {
      virtual void
      run (Arg)
        {
          test_remove (" nothing ");
          test_remove ("0");
          test_remove ("9");
          test_remove ("5");
          test_remove ("0   2   4   6   8  ");
          test_remove ("  1   3   5   7   9");
          test_remove ("0 1 2 3 4 5 6 7 8 9");
          test_remove ("0 1 2 3 4 5 6 7 8  ");
          test_remove ("  1 2 3 4 5 6 7 8 9");
          test_remove ("0 1 2 3 4   6 7 8 9");
        }
      
      
      void
      test_remove (string elems_to_remove)
        {
          IntSet theSet;
          for (int i=0; i<10; ++i)
            theSet.insert (i);
          
          util::remove_if (theSet, select_match(elems_to_remove));
          
          cout << "removed " << elems_to_remove << " ---> ";
          show (theSet);
        }
      
    };
  
  
  LAUNCHER (RemoveFromSet_test, "unit common");
  
  
}} // namespace util::test