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Add assignment tests to intrusive_ptr_test

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This commit is contained in:
Peter Dimov
2019-04-20 18:02:11 +03:00
parent 47fffaf11c
commit 1725e26f70
1 changed files with 197 additions and 0 deletions
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197
test/intrusive_ptr_test.cpp
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@ -303,14 +303,211 @@ namespace n_assignment
void copy_assignment() void copy_assignment()
{ {
BOOST_TEST( N::base::instances == 0 );
{
boost::intrusive_ptr<X> p1;
p1 = p1;
BOOST_TEST(p1 == p1);
BOOST_TEST(p1? false: true);
BOOST_TEST(!p1);
BOOST_TEST(p1.get() == 0);
boost::intrusive_ptr<X> p2;
p1 = p2;
BOOST_TEST(p1 == p2);
BOOST_TEST(p1? false: true);
BOOST_TEST(!p1);
BOOST_TEST(p1.get() == 0);
boost::intrusive_ptr<X> p3(p1);
p1 = p3;
BOOST_TEST(p1 == p3);
BOOST_TEST(p1? false: true);
BOOST_TEST(!p1);
BOOST_TEST(p1.get() == 0);
BOOST_TEST(N::base::instances == 0);
boost::intrusive_ptr<X> p4(new X);
BOOST_TEST(N::base::instances == 1);
p1 = p4;
BOOST_TEST(N::base::instances == 1);
BOOST_TEST(p1 == p4);
BOOST_TEST(p1->use_count() == 2);
p1 = p2;
BOOST_TEST(p1 == p2);
BOOST_TEST(N::base::instances == 1);
p4 = p3;
BOOST_TEST(p4 == p3);
BOOST_TEST(N::base::instances == 0);
}
} }
void conversion_assignment() void conversion_assignment()
{ {
BOOST_TEST( N::base::instances == 0 );
{
boost::intrusive_ptr<X> p1;
boost::intrusive_ptr<Y> p2;
p1 = p2;
BOOST_TEST(p1 == p2);
BOOST_TEST(p1? false: true);
BOOST_TEST(!p1);
BOOST_TEST(p1.get() == 0);
BOOST_TEST(N::base::instances == 0);
boost::intrusive_ptr<Y> p4(new Y);
BOOST_TEST(N::base::instances == 1);
BOOST_TEST(p4->use_count() == 1);
boost::intrusive_ptr<X> p5(p4);
BOOST_TEST(p4->use_count() == 2);
p1 = p4;
BOOST_TEST(N::base::instances == 1);
BOOST_TEST(p1 == p4);
BOOST_TEST(p1->use_count() == 3);
BOOST_TEST(p4->use_count() == 3);
p1 = p2;
BOOST_TEST(p1 == p2);
BOOST_TEST(N::base::instances == 1);
BOOST_TEST(p4->use_count() == 2);
p4 = p2;
p5 = p2;
BOOST_TEST(p4 == p2);
BOOST_TEST(N::base::instances == 0);
}
} }
void pointer_assignment() void pointer_assignment()
{ {
BOOST_TEST( N::base::instances == 0 );
{
boost::intrusive_ptr<X> p1;
p1 = p1.get();
BOOST_TEST(p1 == p1);
BOOST_TEST(p1? false: true);
BOOST_TEST(!p1);
BOOST_TEST(p1.get() == 0);
boost::intrusive_ptr<X> p2;
p1 = p2.get();
BOOST_TEST(p1 == p2);
BOOST_TEST(p1? false: true);
BOOST_TEST(!p1);
BOOST_TEST(p1.get() == 0);
boost::intrusive_ptr<X> p3(p1);
p1 = p3.get();
BOOST_TEST(p1 == p3);
BOOST_TEST(p1? false: true);
BOOST_TEST(!p1);
BOOST_TEST(p1.get() == 0);
BOOST_TEST(N::base::instances == 0);
boost::intrusive_ptr<X> p4(new X);
BOOST_TEST(N::base::instances == 1);
p1 = p4.get();
BOOST_TEST(N::base::instances == 1);
BOOST_TEST(p1 == p4);
BOOST_TEST(p1->use_count() == 2);
p1 = p2.get();
BOOST_TEST(p1 == p2);
BOOST_TEST(N::base::instances == 1);
p4 = p3.get();
BOOST_TEST(p4 == p3);
BOOST_TEST(N::base::instances == 0);
}
{
boost::intrusive_ptr<X> p1;
boost::intrusive_ptr<Y> p2;
p1 = p2.get();
BOOST_TEST(p1 == p2);
BOOST_TEST(p1? false: true);
BOOST_TEST(!p1);
BOOST_TEST(p1.get() == 0);
BOOST_TEST(N::base::instances == 0);
boost::intrusive_ptr<Y> p4(new Y);
BOOST_TEST(N::base::instances == 1);
BOOST_TEST(p4->use_count() == 1);
boost::intrusive_ptr<X> p5(p4);
BOOST_TEST(p4->use_count() == 2);
p1 = p4.get();
BOOST_TEST(N::base::instances == 1);
BOOST_TEST(p1 == p4);
BOOST_TEST(p1->use_count() == 3);
BOOST_TEST(p4->use_count() == 3);
p1 = p2.get();
BOOST_TEST(p1 == p2);
BOOST_TEST(N::base::instances == 1);
BOOST_TEST(p4->use_count() == 2);
p4 = p2.get();
p5 = p2.get();
BOOST_TEST(p4 == p2);
BOOST_TEST(N::base::instances == 0);
}
} }
void test() void test()