Gtest on new keyword

new keyword in C++ will throw an exception if insufficient memory but below code trying to return "NO_MEMORY" when new failed. This is bad because it will raise std::bad_alloc exception .

I am writing a unit test(gtest). How to create a scenario to catch this problem.

class base{


    public: base(){
        std::cout<<"base\n";
    }
};
 

std::string getInstance(base** obj){

    base *bObject = new base();
    *obj = bObject; //updated
     return (NULL == bObject) ? "NO_MEMORY" : "SUCCESS"; // here is problem if new fail it raise an exception. How to write unit test to catch this?
}

int main()
{
 
 base *base_obj;
 getInstance(&base_obj);
}