Ichthyostega
2882d78755
...so now the stage is set. We can reimplement the handling of the list diff cases here in the context of tree diff application. The additional twist of course being the distinction between attribute and child scope
173 lines
5.2 KiB
C++
173 lines
5.2 KiB
C++
/*
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GenericRecordUpdate(Test) - manipulate and reshape the generic record contents
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Copyright (C) Lumiera.org
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2015, 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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#include "lib/test/run.hpp"
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#include "lib/test/test-helper.hpp"
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#include "lib/diff/record-content-mutator.hpp"
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#include "lib/format-util.hpp"
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#include "lib/diff/record.hpp"
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#include "lib/itertools.hpp"
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#include "lib/util.hpp"
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#include <algorithm>
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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::vector;
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using lumiera::error::LUMIERA_ERROR_ITER_EXHAUST;
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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 Seq = vector<string>;
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using RecS = Record<string>;
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template<class IT>
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inline Seq
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contents (IT const& it)
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{
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Seq collected;
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append_all (it, collected);
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return collected;
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}
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inline Seq
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contents (RecS const& rec_of_strings)
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{
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return contents (rec_of_strings.begin());
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}
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}//(End)Test fixture
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/*****************************************************************************//**
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* @test cover technical details of rearranging the contents of lib::diff::Record.
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* The implementation of our generic record (abstract object representation)
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* uses two lists to hold the data of the attribute and content scopes.
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* When receiving a diff message, we have to rearrange and alter the contents,
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* which are by default immutable. Thus, for this specific task, embedded
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* data is moved into this adapter, which exposes the mutating operation
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* required to apply such a diff message.
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*
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* @see generic-record-representation-test.cpp
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* @see tree-diff-application-test.cpp
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*/
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class GenericRecordUpdate_test
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: 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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RecS subject({"b = β", "a = α", "γ", "ε"});
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RecS::Mutator mut(subject);
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mut.appendChild("δ");
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mut.setType("🌰");
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RecS::ContentMutator content; // empty
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CHECK (!isnil (mut));
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CHECK ( isnil (content));
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mut.swapContent(content); // contents of mutator now moved over
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CHECK (!isnil (content));
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CHECK ( isnil (mut));
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CHECK (content.pos == content.attribs.begin());
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CHECK (content.currIsAttrib());
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CHECK (!content.currIsChild());
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CHECK ("b = β" == *content.pos);
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void* rawElm = &content.attribs[0];
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swap (content.attribs[0], content.attribs[1]);
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CHECK ("a = α" == *content.pos);
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CHECK (rawElm == & *content.pos);
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++content;
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CHECK ("b = β" == *content.pos);
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CHECK (rawElm != &*content.pos);
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CHECK (content.currIsAttrib());
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CHECK (!content.currIsChild());
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std::sort (content.children.begin(), content.children.end());
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++content; // now leaving attributes and entering child scope...
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CHECK (!content.currIsAttrib());
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CHECK (content.currIsChild());
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CHECK ("γ" == *content.pos);
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++content;
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CHECK ("δ" == *content.pos);
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++content;
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CHECK ("ε" == *content.pos);
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++content;
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CHECK (content.pos == content.end());
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CHECK (!content.currIsAttrib());
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CHECK (!content.currIsChild());
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VERIFY_ERROR (ITER_EXHAUST, ++content);
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content.resetPos();
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CHECK (content.currIsAttrib());
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CHECK (!content.currIsChild());
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CHECK (rawElm == & *content.pos);
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++content;
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CHECK ("b = β" == *content.pos);
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content.jumpToChildScope();
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CHECK ("γ" == *content.pos);
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CHECK (!content.currIsAttrib());
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CHECK (content.currIsChild());
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CHECK ( isnil (mut));
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CHECK (!isnil (content));
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mut.swapContent(content);
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CHECK ( isnil (content));
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CHECK (!isnil (mut));
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mut.replace(subject);
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CHECK (Seq({"a = α", "b = β", "γ", "δ", "ε"}) == contents(subject));
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CHECK ("Rec(🌰| a = α, b = β |{γ, δ, ε})" == string(subject));
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}
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};
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/** Register this test class... */
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LAUNCHER (GenericRecordUpdate_test, "unit common");
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}}} // namespace lib::diff::test
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