axmol/tests/cpp-tests/Classes/UnitTest/RefPtrTest.cpp

#include "RefPtrTest.h"

USING_NS_CC;

void RefPtrTest::onEnter()
{
    UnitTestDemo::onEnter();

#if (defined(COCOS2D_DEBUG) && COCOS2D_DEBUG > 0)
    // TEST(constructors)
    {
        // Default constructor
        RefPtr<Ref> ref1;
        CC_ASSERT(nullptr == ref1.get());

        // Parameter constructor
        RefPtr<__String> ref2(__String::create("Hello"));
        CC_ASSERT(strcmp("Hello", ref2->getCString()) == 0);
        CC_ASSERT(2 == ref2->getReferenceCount());

        // Parameter constructor with nullptr
        RefPtr<__String> ref3(nullptr);
        CC_ASSERT((__String*) nullptr == ref3.get());
        
        // Copy constructor
        RefPtr<__String> ref4(ref2);
        CC_ASSERT(strcmp("Hello", ref4->getCString()) == 0);
        CC_ASSERT(3 == ref2->getReferenceCount());
        CC_ASSERT(3 == ref4->getReferenceCount());
        
        // Copy constructor with nullptr reference
        RefPtr<Ref> ref5(ref1);
        CC_ASSERT((Ref*) nullptr == ref5.get());
    }
    
    // TEST(destructor)
    {
        __String * hello = __String::create("Hello");
        CC_ASSERT(1 == hello->getReferenceCount());
        
        {
            RefPtr<Ref> ref(hello);
            CC_ASSERT(2 == hello->getReferenceCount());
        }
        
        CC_ASSERT(1 == hello->getReferenceCount());
    }
    
    // TEST(assignmentOperator)
    {
        // Test basic assignment with pointer
        RefPtr<__String> ref1;
        CC_ASSERT((Ref*) nullptr == ref1.get());
        
        ref1 = __String::create("World");
        CC_ASSERT(strcmp("World", ref1->getCString()) == 0);
        CC_ASSERT(2 == ref1->getReferenceCount());
        
        // Assigment back to nullptr
        __String * world = ref1;
        CC_ASSERT(2 == world->getReferenceCount());
        
        ref1 = nullptr;
        CC_ASSERT(1 == world->getReferenceCount());
        
        // Assignment swapping 
        ref1 = __String::create("Hello");
        CC_ASSERT(strcmp("Hello", ref1->getCString()) == 0);
        CC_ASSERT(2 == ref1->getReferenceCount());
        
        __String * hello = (__String*) ref1;
        CC_ASSERT(2 == hello->getReferenceCount());
        
        ref1 = world;
        CC_ASSERT(1 == hello->getReferenceCount());
        CC_ASSERT(2 == world->getReferenceCount());
        
        // Test assignment with another reference
        RefPtr<__String> ref2 = __String::create("blah");
        __String * blah = ref2;
        CC_ASSERT(2 == blah->getReferenceCount());
        
        ref2 = ref1;
        CC_ASSERT(1 == blah->getReferenceCount());
        CC_ASSERT(3 == world->getReferenceCount());
    }
    
    // TEST(castBackToPointerOperator)
    {
        RefPtr<__String> ref1 = __String::create("Hello");
        __String * helloPtr = ref1;
        Ref * objectPtr = ref1;
        
        CC_ASSERT(helloPtr == objectPtr);
    }
    
    // TEST(dereferenceOperators)
    {
        RefPtr<__String> ref1 = __String::create("Hello");
        CC_ASSERT(strcmp("Hello", ref1->getCString()) == 0);
        CC_ASSERT(strcmp("Hello", (*ref1).getCString()) == 0);
    }
    
    // TEST(convertToBooleanOperator)
    {
        RefPtr<__String> ref1 = __String::create("Hello");
        CC_ASSERT(true == (bool) ref1);
        
        ref1 = nullptr;
        CC_ASSERT(false == (bool) ref1);
    }
    
    // TEST(get)
    {
        RefPtr<__String> ref1 = __String::create("Hello");
        CC_ASSERT(strcmp("Hello", ref1.get()->getCString()) == 0);
        
        ref1.reset();
        CC_ASSERT((__String*) nullptr == ref1.get());

        RefPtr<__String const> ref2 = __String::create("Hello");
        CC_ASSERT(strcmp("Hello", ref2.get()->getCString()) == 0);
        
        ref2.reset();
        CC_ASSERT(nullptr == ref2.get());
        static_assert(std::is_same<const __String*, decltype(ref2.get())>::value, "");
    }
    
    // TEST(reset)
    {
        RefPtr<__String> ref1;
        CC_ASSERT((__String*) nullptr == ref1.get());
        
        ref1.reset();
        CC_ASSERT((__String*) nullptr == ref1.get());
        
        ref1 = __String::create("Hello");
        CC_ASSERT(strcmp("Hello", ref1.get()->getCString()) == 0);
        
        __String * hello = ref1.get();
        CC_ASSERT(2 == hello->getReferenceCount());
        
        ref1.reset();
        CC_ASSERT((__String*) nullptr == ref1.get());
        CC_ASSERT(1 == hello->getReferenceCount());
    }
    
    // TEST(swap)
    {
        RefPtr<__String> ref1;
        RefPtr<__String> ref2;
        
        CC_ASSERT((__String*) nullptr == ref1.get());
        CC_ASSERT((__String*) nullptr == ref2.get());
        
        ref1.swap(ref2);
        
        CC_ASSERT((__String*) nullptr == ref1.get());
        CC_ASSERT((__String*) nullptr == ref2.get());
        
        __String * hello = __String::create("Hello");
        CC_ASSERT(1 == hello->getReferenceCount());
        
        ref1 = hello;
        CC_ASSERT(2 == hello->getReferenceCount());
        
        ref1.swap(ref2);
        CC_ASSERT(2 == hello->getReferenceCount());
        CC_ASSERT((__String*) nullptr == ref1.get());
        CC_ASSERT(strcmp("Hello", ref2->getCString()) == 0);
        
        ref1.swap(ref2);
        CC_ASSERT(2 == hello->getReferenceCount());
        CC_ASSERT(strcmp("Hello", ref1->getCString()) == 0);
        CC_ASSERT((__String*) nullptr == ref2.get());
        
        __String * world = __String::create("World");
        CC_ASSERT(1 == world->getReferenceCount());
        
        ref2 = world;
        CC_ASSERT(2 == world->getReferenceCount());
        
        ref2.swap(ref1);
        CC_ASSERT(strcmp("World", ref1->getCString()) == 0);
        CC_ASSERT(strcmp("Hello", ref2->getCString()) == 0);
        
        CC_ASSERT(2 == hello->getReferenceCount());
        CC_ASSERT(2 == world->getReferenceCount());
        
        ref1.swap(ref2);
        
        CC_ASSERT(strcmp("Hello", ref1->getCString()) == 0);
        CC_ASSERT(strcmp("World", ref2->getCString()) == 0);
        
        CC_ASSERT(2 == hello->getReferenceCount());
        CC_ASSERT(2 == world->getReferenceCount());
    }
    
    // TEST(staticPointerCast)
    {
        RefPtr<__String> ref1 = __String::create("Hello");
        CC_ASSERT(2 == ref1->getReferenceCount());
        
        RefPtr<Ref> ref2 = static_pointer_cast<Ref>(ref1);
        CC_ASSERT(strcmp("Hello", ((__String*) ref2.get())->getCString()) == 0);
        CC_ASSERT(3 == ref1->getReferenceCount());
    }
    
    // TEST(dynamicPointerCast)
    {
        RefPtr<__String> ref1 = __String::create("Hello");
        CC_ASSERT(2 == ref1->getReferenceCount());
        
        RefPtr<Ref> ref2 = dynamic_pointer_cast<Ref>(ref1);
        CC_ASSERT(strcmp("Hello", ((__String*) ref2.get())->getCString()) == 0);
        CC_ASSERT(3 == ref1->getReferenceCount());
        
        RefPtr<__String> ref3 = dynamic_pointer_cast<__String>(ref2);
        CC_ASSERT(strcmp("Hello", ref3->getCString()) == 0);
        CC_ASSERT(4 == ref1->getReferenceCount());
        
        RefPtr<cocos2d::Node> ref4 = dynamic_pointer_cast<cocos2d::Node>(ref2);
        CC_ASSERT((Ref*) nullptr == ref4.get());
    }
    
    // TEST(weakAssign)
    {
        RefPtr<__String> ref1;
        
        __String * string1 = new __String("Hello");
        ref1.weakAssign(string1);
        CC_ASSERT(1 == string1->getReferenceCount());
        
        RefPtr<__String> ref2 = ref1;
        CC_ASSERT(2 == string1->getReferenceCount());
        
        __String * string2 = new __String("World");
        ref1.weakAssign(string2);
        
        CC_ASSERT(1 == string1->getReferenceCount());
        CC_ASSERT(1 == ref2->getReferenceCount());
        
        __String * string3 = new __String("Blah");
        RefPtr<__String> ref3;
        ref3.weakAssign(string3);
        CC_ASSERT(1 == string3->getReferenceCount());
        
        string3->retain();
        CC_ASSERT(2 == string3->getReferenceCount());
        
        ref3.weakAssign(nullptr);
        CC_ASSERT(1 == string3->getReferenceCount());
        CC_SAFE_RELEASE_NULL(string3);
    }
    
    // TEST(comparisonOperators)
    {
        RefPtr<Ref> ref1;
        RefPtr<Ref> ref2;
        
        CC_ASSERT(true == (ref1 == ref2));
        CC_ASSERT(false == (ref1 != ref2));
        CC_ASSERT(false == (ref1 < ref2));
        CC_ASSERT(false == (ref1 > ref2));
        CC_ASSERT(true == (ref1 <= ref2));
        CC_ASSERT(true == (ref1 >= ref2));
        
        CC_ASSERT(true == (ref1 == nullptr));
        CC_ASSERT(false == (ref1 != nullptr));
        CC_ASSERT(false == (ref1 < nullptr));
        CC_ASSERT(false == (ref1 > nullptr));
        CC_ASSERT(true == (ref1 <= nullptr));
        CC_ASSERT(true == (ref1 >= nullptr));
        CC_ASSERT(false == (nullptr < ref1));
        CC_ASSERT(false == (nullptr > ref1));
        CC_ASSERT(true == (nullptr <= ref1));
        CC_ASSERT(true == (nullptr >= ref1));
        
        CC_ASSERT(false == (ref1 == __String::create("Hello")));
        CC_ASSERT(true == (ref1 != __String::create("Hello")));
        CC_ASSERT(true == (ref1 < __String::create("Hello")));
        CC_ASSERT(false == (ref1 > __String::create("Hello")));
        CC_ASSERT(true == (ref1 <= __String::create("Hello")));
        CC_ASSERT(false == (ref1 >= __String::create("Hello")));
        
        ref1 = __String::create("Hello");
        
        CC_ASSERT(false == (ref1 == ref2));
        CC_ASSERT(true == (ref1 != ref2));
        CC_ASSERT(false == (ref1 < ref2));
        CC_ASSERT(true == (ref1 > ref2));
        CC_ASSERT(false == (ref1 <= ref2));
        CC_ASSERT(true == (ref1 >= ref2));

        CC_ASSERT(false == (ref1 == nullptr));
        CC_ASSERT(true == (ref1 != nullptr));
        CC_ASSERT(false == (ref1 < nullptr));
        CC_ASSERT(true == (ref1 > nullptr));
        CC_ASSERT(false == (ref1 <= nullptr));
        CC_ASSERT(true == (ref1 >= nullptr));
        CC_ASSERT(true == (nullptr < ref1));
        CC_ASSERT(false == (nullptr > ref1));
        CC_ASSERT(true == (nullptr <= ref1));
        CC_ASSERT(false == (nullptr >= ref1));
    }
    
    // TEST(moveConstructor)
    {
        auto someFunc = []() -> RefPtr<__String>
        {
            return __String::create("Hello world!");
        };
        
        // Note: std::move will turn the rvalue into an rvalue reference and thus cause the move constructor to be invoked.
        // Have to use this because the compiler will try and optimize how we handle the return value otherwise and skip the move constructor.
        RefPtr<__String> theString(std::move(someFunc()));
        CC_ASSERT(theString->getReferenceCount() == 2);
        CC_ASSERT(theString->compare("Hello world!") == 0);
        
        __String * theStringPtr = theString;
        theString.reset();
        CC_ASSERT(theStringPtr->getReferenceCount() == 1);
        CC_ASSERT(theStringPtr->compare("Hello world!") == 0);
    }
    
    // TEST(moveAssignmentOperator)
    {
        auto someFunc = []() -> RefPtr<__String>
        {
            return __String::create("Hello world!");
        };
        
        RefPtr<__String> theString(someFunc());
        CC_ASSERT(theString->getReferenceCount() == 2);
        CC_ASSERT(theString->compare("Hello world!") == 0);
        
        theString = someFunc();                             // No need to use std::move here, compiler should figure out that move semantics are appropriate for this statement.
        CC_ASSERT(theString->getReferenceCount() == 2);
        CC_ASSERT(theString->compare("Hello world!") == 0);
    }
#else
    log("RefPtr tests are not executed in release mode");
#endif
}

std::string RefPtrTest::subtitle() const
{
    return "RefPtrTest, should not crash!";
}