GMOCK method is throwing compilation error

Question

When I try to implementation GMOCK method like below I get compilation error but the code and the MOCK class works fine when I remove it:

MOCK_METHOD2(myfunc, void (std::shared_ptr<route>, std::unique_ptr<message, std::default_delete<message> >));

I get the below compilation error:

error: use of deleted function 'std::unique_ptr<_Tp, _Dp>::unique_ptr(const std::unique_ptr<_Tp, _Dp>&) [with _Tp = message; _Dp = std::default_delete<message>]'
             MOCK_METHOD2(ship, void (std::shared_ptr<route>, std::unique_ptr<message, std::default_delete<message> >));
             ^
        In file included from C:/tools/mingw64/x86_64-w64-mingw32/include/c++/memory:81:0,
        ......................................................................................
        C:/tools/mingw64/x86_64-w64-mingw32/include/c++/bits/unique_ptr.h:356:7: note: declared here
               unique_ptr(const unique_ptr&) = delete;
    error:   initializing argument 2 of 'R testing::internal::FunctionMocker<R(A1, A2)>::Invoke(A1, A2) [with R = void; A1 = std::shared_ptr<route>; A2 = std::unique_ptr<message>]'
       R Invoke(A1 a1, A2 a2) {
         ^
    In file included from ...

    C:/tools/mingw64/x86_64-w64-mingw32/include/c++/tuple: In instantiation of 'constexpr std::_Head_base<_Idx, _Head, false>::_Head_base(const _Head&) [with long long unsigned int _Idx = 1ull; _Head = std::unique_ptr<message>]':
    C:/tools/mingw64/x86_64-w64-mingw32/include/c++/tuple:255:44:   recursively required from 'constexpr std::_Tuple_impl<_Idx, _Head, _Tail ...>::_Tuple_impl(const _Head&, const _Tail& ...) [with long long unsigned int _Idx = 1ull; _Head = std::unique_ptr<message>; _Tail = {}]'
    C:/tools/mingw64/x86_64-w64-mingw32/include/c++/tuple:255:44:   required from 'constexpr std::_Tuple_impl<_Idx, _Head, _Tail ...>::_Tuple_impl(const _Head&, const _Tail& ...) [with long long unsigned int _Idx = 0ull; _Head = std::shared_ptr<cmb::mim::MimChannel>; _Tail = {std::unique_ptr<message, std::default_delete<message> >}]'
    C:/tools/mingw64/x86_64-w64-mingw32/include/c++/tuple:531:30:   required from 'constexpr std::tuple<_T1, _T2>::tuple(const _T1&, const _T2&) [with _T1 = std::shared_ptr<cmb::mim::MimChannel>; _T2 = std::unique_ptr<message>]'
    C:/work/googletest/googlemock/include/gmock/gmock-generated-function-mockers.h:122:50:   required from 'R testing::internal::FunctionMocker<R(A1, A2)>::Invoke(A1, A2) [with R = void; A1 = std::shared_ptr<cmb::mim::MimChannel>; A2 = std::unique_ptr<message>]'
    C:/work/Mock.hpp:39:5:   required from here
    C:/tools/mingw64/x86_64-w64-mingw32/include/c++/tuple:134:25: error: use of deleted function 'std::unique_ptr<_Tp, _Dp>::unique_ptr(const std::unique_ptr<_Tp, _Dp>&) [with _Tp = message; _Dp = std::default_delete<message>]'
           : _M_head_impl(__h) { }

I am not sure what the error is and how to fix it - commenting or removing the MOCK method declaration the compilation goes fine?

gsamaras · Accepted Answer · 2018-11-17 13:57:57Z

1

I was able to resolve the issue by manipulating the function as mentioned below:

MOCK_METHOD2(myfuncproxy, void (std::shared_ptr<route>, message&));

void myfunc((std::shared_ptr<route> r, std::unique_ptr<message, std::default_delete<message> > m)
{
    myfuncproxy(r,*m.get());
}

edited Nov 17, 2018 at 13:57

gsamaras

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answered Nov 30, 2017 at 5:24

Programmer

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