LUMIERA.clone/tests/library/diff/diff-list-application-test.cpp
Ichthyostega 9c74466778 Tests: build an link a test-support library
This is something I wanted to clean-up since a very long time indeed,
but always postponed it, since it requires a lot of nasty clean-up and disentangling....

Several parts had been stashed away into `src/lib/test`, which are not really related:
 * the testrunner and testsuite builder
 * generic helper utilities
 * specialised test-support facilities, e.g. the EventLog

This changeset introduces a new top-level test folder and a namespace `::test`
Code from this folder is linked into a shared library `libtestsupport.so`,
which resides in the linkage hierarchy between »Vessel« and »Vault«,
yet is no longer part of the Lumiera application and only linked into the test-suite.
2026-03-06 23:16:32 +01:00

120 lines
3.1 KiB
C++
Raw Blame History

This file contains invisible Unicode characters

This file contains invisible Unicode characters that are indistinguishable to humans but may be processed differently by a computer. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

/*
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.
* *****************************************************************/
/** @file diff-list-application-test.cpp
** unit test \ref DiffListApplication_test
*/
#include "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
/***********************************************************************//**
* @test Demonstration/Concept: a description language for list differences.
* The representation is given as a linearised sequence of verb tokens.
* This test demonstrates the application of such a diff representation
* to a given source list, transforming this list to hold the intended
* target list contents.
*
* @see DiffListGeneration_test
* @see DiffTreeApplication_test
* @see VerbFunctionDispatch_test
*/
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}));
}
};
/** Register this test class... */
LAUNCHER (DiffListApplication_test, "unit common");
}}} // namespace lib::diff::test