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
150 lines
4.4 KiB
C++
150 lines
4.4 KiB
C++
/*
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TreeMutator(Test) - customisable intermediary to abstract tree changing operations
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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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/** @file tree-mutator-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/format-util.hpp"
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#include "lib/test/test-helper.hpp"
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#include "lib/diff/tree-mutator.hpp"
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#include "lib/format-cout.hpp"
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#include "lib/format-util.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 util::isnil;
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using util::join;
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using util::typeStr;
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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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/*****************************************************************************//**
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* @test Demonstrate a customisable component for flexible bindings
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* to enable generic tree changing and mutating operations to
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* arbitrary hierarchical data structures.
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* - we use lambdas to link into our private implementation
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* - this test demonstrates the behaviour of an attribute setter
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* - plus some of the _primitive operations_ available on collections
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*
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* @see TreeMutator
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* @see DiffComplexApplication_test a way more complex usage scenario
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* @see GenNodeBasic_test
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* @see GenericRecordRepresentation_test
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*/
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class TreeMutator_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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simpleAttributeBinding();
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simpleCollectionBinding();
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}
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void
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simpleAttributeBinding()
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{
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MARK_TEST_FUN;
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string localData;
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auto mutator =
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TreeMutator::build()
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.change("data", [&](string val)
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{
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cout << "\"data\" closure received something "<<val<<endl;
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localData = val;
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});
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cout << "concrete TreeMutator size=" << sizeof(mutator)
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<< " type="<< typeStr(mutator)
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<< endl;
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mutator.init();
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CHECK (isnil (localData));
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string testValue{"that would be acceptable"};
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mutator.assignElm ({"lore", testValue});
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CHECK ( isnil (localData)); // nothing happens, nothing changed
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mutator.assignElm ({"data", testValue});
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CHECK (!isnil (localData));
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cout << "localData changed to: "<<localData<<endl;
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CHECK (localData == "that would be acceptable");
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}
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void
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simpleCollectionBinding()
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{
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MARK_TEST_FUN;
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vector<string> values;
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values.push_back("a");
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values.push_back("b");
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cout << join(values) <<endl;
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CHECK (2 == values.size());
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CHECK ("a, b" == join(values));
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auto mutator =
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TreeMutator::build()
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.attach (collection(values));
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cout << "concrete TreeMutator size=" << sizeof(mutator)
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<< " type="<< typeStr(mutator)
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<< endl;
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mutator.init();
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CHECK (isnil (values));
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CHECK (mutator.matchSrc (GenNode("a")));
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mutator.skipSrc (GenNode("a"));
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CHECK (mutator.matchSrc (GenNode("b")));
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CHECK (mutator.injectNew (GenNode("c")));
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CHECK (mutator.acceptSrc (GenNode("b")));
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cout << join(values) <<endl;
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CHECK (2 == values.size());
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CHECK ("c, b" == join(values));
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}
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};
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/** Register this test class... */
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LAUNCHER (TreeMutator_test, "unit common");
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}}} // namespace lib::diff::test
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