Ichthyostega
1892d1beb5
the RandomDraw rules developed last days are meant to be used with user-provided λ-adapters; employing these in a context of a DSL runs danger of producing dangling references. Attempting to resolve this fundamental problem through late-initialisation, and then locking the component into a fixed memory location prior to actual usage. Driven by the goal of a self-contained component, some advanced trickery is required -- which again indicates better to write a library component with adequate test coverage.
107 lines
2.6 KiB
C++
107 lines
2.6 KiB
C++
/*
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LazyInit(Test) - verify a mechanism to install a self-initialising functor
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Copyright (C) Lumiera.org
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2023, 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 lazy-init-test.cpp
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** unit test \ref LazyInit_test
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*/
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#include "lib/test/run.hpp"
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#include "lib/lazy-init.hpp"
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//#include "lib/format-string.hpp"
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//#include "lib/test/test-helper.hpp"
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#include "lib/test/diagnostic-output.hpp" /////////////////////TODO TODOH
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//#include <array>
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namespace lib {
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namespace test{
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// using util::_Fmt;
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// using lib::meta::_FunRet;
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// using err::LUMIERA_ERROR_LIFECYCLE;
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namespace { // policy and configuration for test...
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//
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}//(End) Test config
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/***********************************************************************************//**
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* @test Verify a mix-in to allow for lazy initialisation of complex infrastructure
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* tied to a std::function; the intention is to have a »trap« hidden in the
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* function itself to trigger on first use and perform the one-time
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* initialisation, then finally lock the object in place.
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* @see lazy-init.hpp
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* @see lib::RandomDraw
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*/
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class LazyInit_test
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: public Test
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{
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void
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run (Arg)
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{
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simpleUse();
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verify_inlineFunctorStorage();
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// verify_numerics();
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// verify_adaptMapping();
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// verify_dynamicChange();
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}
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/** @test demonstrate a basic usage scenario
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*/
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void
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simpleUse()
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{
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}
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/** @test verify that std::function indeed stores a simple functor inline
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*/
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void
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verify_inlineFunctorStorage()
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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 (LazyInit_test, "unit common");
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}} // namespace lib::test
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