add unit tests

Sofa/framework/Core/src/sofa/core/IntrusiveObject.h

@@ -47,6 +47,9 @@ class SOFA_CORE_API IntrusiveObject
     {
         p->release();
     }
+
+protected:
+    virtual ~IntrusiveObject() = default;
 };
 
 }

Sofa/framework/Core/test/IntrusiveObject_test.cpp

@@ -0,0 +1,73 @@
+/******************************************************************************
+*                 SOFA, Simulation Open-Framework Architecture                *
+*                    (c) 2006 INRIA, USTL, UJF, CNRS, MGH                     *
+*                                                                             *
+* 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, see <http://www.gnu.org/licenses/>.        *
+*******************************************************************************
+* Authors: The SOFA Team and external contributors (see Authors.txt)          *
+*                                                                             *
+* Contact information: [email protected]                             *
+******************************************************************************/
+#include <sofa/core/IntrusiveObject.h>
+#include <gtest/gtest.h>
+#include <sofa/core/sptr.h>
+
+
+class DummyIntrusiveObject : public sofa::core::IntrusiveObject
+{
+public:
+    DummyIntrusiveObject() = default;
+    explicit DummyIntrusiveObject(const std::function<void()>& _destructorCallback)
+        : destructorCallback(_destructorCallback) {}
+
+    ~DummyIntrusiveObject() override
+    {
+        destructorCallback();
+    }
+
+private:
+    std::function<void()> destructorCallback;
+};
+
+
+
+TEST(IntrusiveObject, IsDestructorCalled)
+{
+    std::size_t nbTimesDestructorCalled = 0;
+    {
+        sofa::core::sptr<DummyIntrusiveObject> dummy(new DummyIntrusiveObject([&nbTimesDestructorCalled]()
+        {
+            nbTimesDestructorCalled++;
+        }));
+    }
+    EXPECT_EQ(1, nbTimesDestructorCalled);
+}
+
+
+TEST(IntrusiveObject, Copy)
+{
+    std::size_t nbTimesDestructorCalled = 0;
+    {
+        sofa::core::sptr<DummyIntrusiveObject> dummy0;
+        {
+            sofa::core::sptr<DummyIntrusiveObject> dummy(new DummyIntrusiveObject([&nbTimesDestructorCalled]()
+            {
+                nbTimesDestructorCalled++;
+            }));
+
+            dummy0 = dummy;
+        }
+    }
+    EXPECT_EQ(1, nbTimesDestructorCalled);
+}