LUMIERA.clone/tests/lib/optional-ref-test.cpp
Ichthyostega 3caa5cfb03 Tests: reorganise test folders
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
2026-03-07 00:56:19 +01:00

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/*
OptionalRef(Test) - verify an optional and switchable object link
Copyright (C)
2010, 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 optional-ref-test.cpp
** unit test \ref OptionalRef_test
*/
#include "test/run.hpp"
#include "test/test-helper.hpp"
#include "lib/optional-ref.hpp"
using test::Test;
using lib::randStr;
using std::string;
namespace lib {
namespace test{
/***************************************************************************//**
* @test verify a reference-like wrapper class,
* used to provide a switchable link to an already existing object.
* - bottom ref can be detected by bool check
* - access to bottom ref raises exception
* - refs can be compared
* - refs can be changed and copied
* - access to refs is secure even after destructor invocation
*
* @see lib::OptionalRef
* @see lib::AutoRegistered usage example
*/
class OptionalRef_test : public Test
{
virtual void
run (Arg)
{
string s1 (randStr(50));
string s2 (randStr(50));
typedef OptionalRef<string> SRef;
SRef r1;
CHECK (!r1);
VERIFY_ERROR (BOTTOM_VALUE, r1() );
VERIFY_ERROR (BOTTOM_VALUE, s1 == r1 );
VERIFY_ERROR (BOTTOM_VALUE, r1 == s1 );
CHECK (!r1.points_to (s1));
r1.link_to (s1);
CHECK (r1);
CHECK (r1 == s1);
CHECK (s1 == r1);
CHECK (r1.points_to (s1));
SRef r2(s2);
CHECK (r2);
CHECK (r2 == s2);
CHECK (r2.points_to (s2));
CHECK (!r2.points_to (s1));
CHECK (!r1.points_to (s2));
CHECK (r2 != r1);
CHECK (r1 != r2);
r2.link_to (s1);
CHECK (r2);
CHECK (r2 == s1);
CHECK (r2 == r1);
CHECK (r1 == r2);
CHECK (r2.points_to (s1));
CHECK (!r2.points_to (s2));
r2.clear();
CHECK (!r2);
VERIFY_ERROR (BOTTOM_VALUE, r2() );
VERIFY_ERROR (BOTTOM_VALUE, s1 == r2 );
VERIFY_ERROR (BOTTOM_VALUE, r2 == s1 );
VERIFY_ERROR (BOTTOM_VALUE, r2 == s2 );
CHECK (r1 != r2); // comparison with bottom ref allowed
CHECK (r2 != r1);
//OptionalRef objects are copyable values
r2 = r1;
CHECK (r2);
CHECK (r2 == r1);
CHECK (r1 == r2);
CHECK (r2 == s1);
r1.link_to (s2);
CHECK (r2 != r1); // but they are indeed independent instances
CHECK (r1 != r2);
CHECK (r2 == s1);
CHECK (r2 != s2);
CHECK (r1 == s2);
SRef r3(r2);
CHECK (r3);
CHECK (r3 == r2);
CHECK (r2 == r3);
CHECK (r3 == s1);
CHECK (r3 != r1);
CHECK (r1 != r3);
CHECK (r3 != s2);
// access is secured even after destruction
CHECK (r3);
r3.~SRef(); // don't try this at home!
CHECK (!r3);
VERIFY_ERROR (BOTTOM_VALUE, r3 == s1 );
CHECK (r3 != r2);
r2.clear();
CHECK (!r2);
CHECK (r3 == r2);
CHECK (r2 == r3);
}
};
LAUNCHER (OptionalRef_test, "unit common");
}} // namespace lib::test