Ichthyostega
24b3bec4be
Doxygen will only process files with a @file documentation comment. Up to now, none of our test code has such a comment, preventing the cross-links to unit tests from working. This is unfortunate, since unit tests, and even the code comments there, can be considered as the most useful form of technical documentation. Thus I'll start an initiative to fill in those missing comments automatically
127 lines
3.7 KiB
C++
127 lines
3.7 KiB
C++
/*
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DiffListGeneration(Test) - demonstrate list diff generation
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Copyright (C) Lumiera.org
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2014, Hermann Vosseler <Ichthyostega@web.de>
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of
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the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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* *****************************************************/
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/** @file diff-list-generation-test.cpp
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** unit test §§TODO§§
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*/
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#include "lib/test/run.hpp"
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#include "lib/diff/list-diff-detector.hpp"
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#include "lib/itertools.hpp"
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#include "lib/util.hpp"
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#include <string>
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#include <vector>
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using lib::append_all;
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using util::isnil;
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using std::string;
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using std::vector;
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namespace lib {
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namespace diff{
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namespace test{
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namespace {//Test fixture....
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using DataSeq = vector<string>;
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#define TOK(id) id(STRINGIFY(id))
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string TOK(a1), TOK(a2), TOK(a3), TOK(a4), TOK(a5);
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string TOK(b1), TOK(b2), TOK(b3), TOK(b4);
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using Interpreter = ListDiffInterpreter<string>;
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using DiffStep = ListDiffLanguage<string>::DiffStep;
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using DiffSeq = vector<DiffStep>;
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DiffStep_CTOR(ins);
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DiffStep_CTOR(del);
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DiffStep_CTOR(pick);
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DiffStep_CTOR(find);
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DiffStep_CTOR(skip);
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}//(End)Test fixture
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/***********************************************************************//**
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* @test Demonstration/Concept: how to derive a list diff representation
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* from the comparison of two sequences. The changes necessary to
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* transform one sequence into the other one are given as a linear
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* sequence of elementary mutation operations.
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*
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* The change detector assumes elements with well defined identity
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* and uses an index table for both sequences. The diff is generated
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* progressively, demand-driven.
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*
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* @see DiffListApplication_test
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*/
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class DiffListGeneration_test : public Test
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{
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virtual void
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run (Arg)
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{
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DataSeq toObserve({a1,a2,a3,a4,a5});
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DiffDetector<DataSeq> detector(toObserve);
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CHECK (!detector.isChanged());
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toObserve = {b1,a3,a5,b2,b3,a4,b4};
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CHECK (detector.isChanged());
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auto changes = detector.pullUpdate();
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CHECK (!isnil (changes));
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CHECK (!detector.isChanged()); // pullUpdate() also took a new snapshot
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DiffSeq generatedDiff;
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append_all (changes, generatedDiff);
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CHECK (generatedDiff == DiffSeq({del(a1)
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, del(a2)
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, ins(b1)
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, pick(a3)
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, find(a5)
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, ins(b2)
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, ins(b3)
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, pick(a4)
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, ins(b4)
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, skip(a5)
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}));
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}
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};
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/** Register this test class... */
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LAUNCHER (DiffListGeneration_test, "unit common");
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}}} // namespace lib::diff::test
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