Ichthyostega
3caa5cfb03
This resolves a long-standing issue: we could not use proper include paths for test-helper code that was defined alongside the tests. Since some test-helper code must now be relocated into the »Vault«-Layer, I took the opportunity to finally resolve this annoyance. The solution is two-fold * introduce a dedicated test-support library * remove the quirks that were necessary to support some plain-C tests Together, this allows to raise the include-directory by one level, and then to adjust all folder names so that they match the namespace
108 lines
3 KiB
C++
108 lines
3 KiB
C++
/*
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UniqueMallocOwner(Test) - Concept to dispatch according to the verbs of a DSL
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Copyright (C)
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2014, Hermann Vosseler <Ichthyostega@web.de>
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**Lumiera** is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the
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Free Software Foundation; either version 2 of the License, or (at your
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option) any later version. See the file COPYING for further details.
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* *****************************************************************/
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/** @file unique-malloc-owner-test.cpp
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** unit test \ref UniqueMallocOwner_test
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*/
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#include "test/run.hpp"
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#include "test/test-helper.hpp"
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#include "lib/unique-malloc-owner.hpp"
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#include "lib/util.hpp"
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#include <utility>
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#include <cstring>
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#include <string>
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using std::string;
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using util::isnil;
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namespace lib {
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namespace test{
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namespace {
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void*
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mallocMess (size_t siz)
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{
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return malloc(siz);
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}
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}
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/***************************************************************************//**
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* @test Verify automatic management of memory originally allocated by C malloc.
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* This situation typically arises when some plain-C function returns
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* results in a heap allocated buffer, requiring the client to care
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* for proper clean-up. To avoid creating a liability, we wrap the
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* buffer into a smart pointer, which acts as ownership token
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* and abstracts the specifics of clean-up.
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*
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* This test places a given (or random) string into a heap malloced
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* buffer, and then pushes the "hot potato" of ownership responsibility
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* around; another function checks the content of the buffer and consumes
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* the token as a side-effect. At the end, there should be no memory leak
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* and the ownership token should be empty.
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*
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* @see lib::UniqueMallocOwner
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* @see lib::meta::demangleCxx
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*/
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class UniqueMallocOwner_test : public Test
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{
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using CharOwner = UniqueMallocOwner<char>;
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virtual void
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run (Arg args)
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{
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string probeString = isnil(args)? randStr(123) : args[0];
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auto hotPotato = place_into_malloced_buffer (probeString);
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CHECK (!isnil (hotPotato));
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verify_and_consume (std::move(hotPotato), probeString);
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CHECK (isnil (hotPotato));
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}
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CharOwner
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place_into_malloced_buffer (string probeString)
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{
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CharOwner hotPotato(mallocMess (1 + probeString.length()));
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std::strcpy(hotPotato.get(), probeString.c_str());
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return hotPotato;
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}
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void
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verify_and_consume (CharOwner hotPotato, string refString)
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{
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CHECK (refString == hotPotato.get());
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} // note sideeffect: hotPotato goes out of scope here...
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};
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/** Register this test class... */
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LAUNCHER (UniqueMallocOwner_test, "unit common");
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}} // namespace lib::test
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