diff-list-application-test.cpp

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/*
  DiffListApplication(Test)  -  demonstrate linearised representation of list diffs
 
   Copyright (C)
     2014,            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/diff/list-diff-application.hpp"
#include "lib/iter-adapter-stl.hpp"
#include "lib/util.hpp"
 
#include <string>
#include <vector>
 
using lib::iter_stl::snapshot;
using util::isnil;
using std::string;
using std::vector;
 
 
namespace lib {
namespace diff{
namespace test{
  
  namespace {//Test fixture....
    
    using DataSeq = vector<string>;
    
    #define TOK(id) id(STRINGIFY(id))
    
    string TOK(a1), TOK(a2), TOK(a3), TOK(a4), TOK(a5);
    string TOK(b1), TOK(b2), TOK(b3), TOK(b4);
    
    using Interpreter = ListDiffInterpreter<string>;
    using DiffStep = ListDiffLanguage<string>::DiffStep;
    using DiffSeq = iter_stl::IterSnapshot<DiffStep>;
    
    DiffStep_CTOR(ins);
    DiffStep_CTOR(del);
    DiffStep_CTOR(pick);
    DiffStep_CTOR(find);
    DiffStep_CTOR(skip);
    
    
    inline DiffSeq
    generateTestDiff()
    {
      return snapshot({del(a1)
                     , del(a2)
                     , ins(b1)
                     , pick(a3)
                     , find(a5)
                     , ins(b2)
                     , ins(b3)
                     , pick(a4)
                     , skip(a5)
                     , ins(b4)
                     });
    }
  }//(End)Test fixture
  
  
  
  
  
  
  
  
  
  /***********************************************************************/
  class DiffListApplication_test : public Test
    {
      
      virtual void
      run (Arg)
        {
          DataSeq src({a1,a2,a3,a4,a5});
          DiffSeq diff = generateTestDiff();
          CHECK (!isnil (diff));
          
          DataSeq target = src;
          DiffApplicator<DataSeq> application(target);
          application.consume(diff);
          
          CHECK (isnil (diff));
          CHECK (!isnil (target));
          CHECK (src != target);
          CHECK (target == DataSeq({b1,a3,a5,b2,b3,a4,b4}));
        }
    };
  
  
  LAUNCHER (DiffListApplication_test, "unit common");
  
  
  
}}} // namespace lib::diff::test