I had the same issue and solved it. The actual version of hippomocks is now published on github:
https://github.com/dascandy/hippomocks
Great appreciation for the provided links, which helped to find an idea for the fix.
UPDATE, Details about my implementation and the added COM support.
First I made it work, which the following test demonstrates
class ICom
{
public:
virtual ~ICom() {}
virtual long __stdcall A(void) = 0;
virtual long __stdcall B(int) = 0;
virtual long __stdcall C(int, int) = 0;
...
};
TEST(checkStdCallBase)
{
MockRepository mocks;
ICom* ic = mocks.Mock<ICom>();
mocks.ExpectCall(ic, ICom::A)
.Return(1);
long actual = ic->A();
EQUALS(1, actual);
}
In order to make it work I had to patch several places in hippomocks.h, the most vital in virtual_function_index method. The correction ensures correct address calculation for the call on an interface.
Second, I added some common setup helpers for COM objects, providing standard behaviour for AddRef, Release and QueryInterface.
The tests show how to use it:
MIDL_INTERFACE("4745C05E-23E6-4c6d-B9F2-E483359A8B89")
COMInterface1 : public IUnknown
{
public:
virtual HRESULT STDMETHODCALLTYPE getTObjectCount(
/* [out] */ unsigned long *pCount) = 0;
};
typedef GUID ESTypeID;
MIDL_INTERFACE("356D44D9-980A-4149-A586-C5CB8B191437")
COMInterface2 : public IUnknown
{
public:
virtual HRESULT STDMETHODCALLTYPE getMappablePackages(
/* [out] */ long *pSize,
/* [size_is][size_is][out] */ ESTypeID **pIdList) = 0;
};
TEST(CheckThat_AddCommExpectations_Stubs_QueryInterface_AddRef_Release)
{
MockRepository mocks;
COMInterface1* deviceMock = mocks.Mock<COMInterface1>();
AddComExpectations(mocks, deviceMock);
{
CComPtr<IUnknown> pUnk = deviceMock;
CComQIPtr<COMInterface1> pDevice = pUnk;
CHECK(pDevice == pUnk);
IUnknown* p = NULL;
pDevice->QueryInterface(__uuidof(IUnknown), (void**)&p);
CHECK(p == deviceMock);
}
}
TEST(CheckThat_ConnectComInterfaces_Stubs_QueryInterface_ToEachOther)
{
MockRepository mocks;
COMInterface1* deviceMock = mocks.Mock<COMInterface1>();
COMInterface2* devMappingMock = mocks.Mock<COMInterface2>();
ConnectComInterfaces(mocks, deviceMock, devMappingMock);
{
//Com objects can reach each other
CComQIPtr<COMInterface2> pDevMapping = deviceMock;
CHECK(pDevMapping != NULL);
CHECK(pDevMapping == devMappingMock);
CComQIPtr<COMInterface1> pDevNavigate = devMappingMock;
CHECK(pDevNavigate != NULL);
CHECK(pDevNavigate == deviceMock);
}
}
The helper methods AddComExpectations and ConnectComInterfaces are provided in a separate header "comsupport.h". The header is an add-on for Hippomocks:
template <typename T>
void AddComExpectations(HM_NS MockRepository& mocks, T* m)
{
mocks.OnCall(m, T::AddRef)
.Return(1);
mocks.OnCall(m, T::Release)
.Return(1);
mocks.OnCall(m, T::QueryInterface)
.With(__uuidof(T), Out((void**)m))
.Return(S_OK);
mocks.OnCall(m, T::QueryInterface)
.With(__uuidof(IUnknown), Out((void**)m))
.Return(S_OK);
}
template <typename T1, typename T2>
void ConnectComInterfaces(HM_NS MockRepository& mocks, T1* m1, T2* m2)
{
//from T1 to T2
mocks.OnCall(m1, T1::QueryInterface)
.With(__uuidof(T2), Out((void**)m2))
.Return(S_OK);
//from T2 to T1
mocks.OnCall(m2, T2::QueryInterface)
.With(__uuidof(T1), Out((void**)m1))
.Return(S_OK);
AddComExpectations(mocks, m1);
AddComExpectations(mocks, m2);
//no support for interface hierarchies
//no Base IUnknown -> do it yourself if you really need that special case
}