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- /*
- Minetest
- Copyright (C) 2018 numzero, Lobachevskiy Vitaliy <numzer0@yandex.ru>
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 2.1 of the License, or
- (at your option) any later version.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU Lesser General Public License for more details.
- You should have received a copy of the GNU Lesser General Public License along
- with this program; if not, write to the Free Software Foundation, Inc.,
- 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
- #include "test.h"
- #include "exceptions.h"
- #include "irr_ptr.h"
- class TestIrrPtr : public TestBase
- {
- public:
- TestIrrPtr() { TestManager::registerTestModule(this); }
- const char *getName() { return "TestIrrPtr"; }
- void runTests(IGameDef *gamedef);
- void testRefCounting();
- void testSelfAssignment();
- void testNullHandling();
- };
- static TestIrrPtr g_test_instance;
- void TestIrrPtr::runTests(IGameDef *gamedef)
- {
- TEST(testRefCounting);
- TEST(testSelfAssignment);
- TEST(testNullHandling);
- }
- ////////////////////////////////////////////////////////////////////////////////
- #define UASSERT_REFERENCE_COUNT(object, value, info) \
- UTEST((object)->getReferenceCount() == value, \
- info "Reference count is %d instead of " #value, \
- (object)->getReferenceCount())
- void TestIrrPtr::testRefCounting()
- {
- IReferenceCounted *obj = new IReferenceCounted(); // RC=1
- obj->grab();
- UASSERT_REFERENCE_COUNT(obj, 2, "Pre-condition failed: ");
- {
- irr_ptr<IReferenceCounted> p1{obj}; // move semantics
- UASSERT(p1.get() == obj);
- UASSERT_REFERENCE_COUNT(obj, 2, );
- irr_ptr<IReferenceCounted> p2{p1}; // copy ctor
- UASSERT(p1.get() == obj);
- UASSERT(p2.get() == obj);
- UASSERT_REFERENCE_COUNT(obj, 3, );
- irr_ptr<IReferenceCounted> p3{std::move(p1)}; // move ctor
- UASSERT(p1.get() == nullptr);
- UASSERT(p3.get() == obj);
- UASSERT_REFERENCE_COUNT(obj, 3, );
- p1 = std::move(p2); // move assignment
- UASSERT(p1.get() == obj);
- UASSERT(p2.get() == nullptr);
- UASSERT_REFERENCE_COUNT(obj, 3, );
- p2 = p3; // copy assignment
- UASSERT(p2.get() == obj);
- UASSERT(p3.get() == obj);
- UASSERT_REFERENCE_COUNT(obj, 4, );
- p1.release();
- UASSERT(p1.get() == nullptr);
- UASSERT_REFERENCE_COUNT(obj, 4, );
- }
- UASSERT_REFERENCE_COUNT(obj, 2, );
- obj->drop();
- UTEST(obj->drop(), "Dropping failed: reference count is %d",
- obj->getReferenceCount());
- }
- void TestIrrPtr::testSelfAssignment()
- {
- irr_ptr<IReferenceCounted> p1{new IReferenceCounted()};
- UASSERT(p1);
- UASSERT_REFERENCE_COUNT(p1, 1, );
- p1 = p1;
- UASSERT(p1);
- UASSERT_REFERENCE_COUNT(p1, 1, );
- p1 = std::move(p1);
- UASSERT(p1);
- UASSERT_REFERENCE_COUNT(p1, 1, );
- }
- void TestIrrPtr::testNullHandling()
- {
- // In the case of an error, it will probably crash with SEGV.
- // Nevertheless, UASSERTs are used to catch possible corner cases.
- irr_ptr<IReferenceCounted> p1{new IReferenceCounted()};
- UASSERT(p1);
- irr_ptr<IReferenceCounted> p2;
- UASSERT(!p2);
- irr_ptr<IReferenceCounted> p3{p2};
- UASSERT(!p2);
- UASSERT(!p3);
- irr_ptr<IReferenceCounted> p4{std::move(p2)};
- UASSERT(!p2);
- UASSERT(!p4);
- p2 = p2;
- UASSERT(!p2);
- p2 = std::move(p2);
- UASSERT(!p2);
- p3 = p2;
- UASSERT(!p2);
- UASSERT(!p3);
- p3 = std::move(p2);
- UASSERT(!p2);
- UASSERT(!p3);
- }
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