library/cpp/messagebus/misc/weak_ptr_ut.cpp


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#include <library/cpp/testing/unittest/registar.h>
 
#include "weak_ptr.h" 
 
Y_UNIT_TEST_SUITE(TWeakPtrTest) {
    struct TWeakPtrTester: public TWeakRefCounted<TWeakPtrTester> { 
        int* const CounterPtr; 
 
        TWeakPtrTester(int* counterPtr)
            : CounterPtr(counterPtr)
        {
        }
        ~TWeakPtrTester() {
            ++*CounterPtr;
        }
    }; 
 
    Y_UNIT_TEST(Simple) {
        int destroyCount = 0; 
 
        TIntrusivePtr<TWeakPtrTester> p(new TWeakPtrTester(&destroyCount)); 
 
        UNIT_ASSERT(!!p); 
        UNIT_ASSERT_VALUES_EQUAL(1u, p->RefCount()); 
 
        TWeakPtr<TWeakPtrTester> p2(p); 
 
        UNIT_ASSERT_VALUES_EQUAL(1u, p->RefCount()); 
 
        { 
            TIntrusivePtr<TWeakPtrTester> p3 = p2.Get(); 
            UNIT_ASSERT(!!p3); 
            UNIT_ASSERT_VALUES_EQUAL(2u, p->RefCount()); 
        } 
 
        p.Drop(); 
        UNIT_ASSERT_VALUES_EQUAL(1, destroyCount); 
 
        { 
            TIntrusivePtr<TWeakPtrTester> p3 = p2.Get(); 
            UNIT_ASSERT(!p3); 
        } 
 
        UNIT_ASSERT_VALUES_EQUAL(1, destroyCount); 
    } 
}