aboutsummaryrefslogtreecommitdiff
path: root/src/unittest/test_irrptr.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'src/unittest/test_irrptr.cpp')
-rw-r--r--src/unittest/test_irrptr.cpp131
1 files changed, 131 insertions, 0 deletions
diff --git a/src/unittest/test_irrptr.cpp b/src/unittest/test_irrptr.cpp
new file mode 100644
index 000000000..aa857ff46
--- /dev/null
+++ b/src/unittest/test_irrptr.cpp
@@ -0,0 +1,131 @@
+/*
+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);
+}