Compare QVariable with Enum of DLL

[henrik2016]

I try to compare a QVariable of a QSignalSpy with a Enum in a test function. I found Q_ENUM_NS, but I got a linker error. I have rebuilt it and run qmake.

Error Message: Undefined reference to CCS::staticMetaObject

testopcua.cpp (most parts)

Q_DECLARE_METATYPE(CCS::DataManagerState)

using namespace ::testing;
class TestOpcUa : public Test
{
public:
    TestOpcUa()
    {
        //.....
    }

    ~TestOpcUa()
    {
        delete _selectedConfValid;
        delete _opcUaObjectValid;
    }

protected:
    MockOpcConf* _selectedConfValid = nullptr;
    OpcUa* _opcUaObjectValid = nullptr;
};

TEST_F(TestOpcUa, checkHandshake)
{
    QSignalSpy readySpy(_opcUaObjectValid, SIGNAL(newManagerState(CCS::DataManagerState)));
    _opcUaObjectValid->connect();
    readySpy.wait();
    ASSERT_EQ(readySpy.count(), 1);
    ASSERT_EQ(readySpy.at(0).at(0).value<CCS::DataManagerState>(), CCS::DataManagerState::Ready); //Linker error
}

int main(int argc, char *argv[])
{
    QCoreApplication app(argc, argv);
    testing::InitGoogleTest(&argc, argv);
    testing::InitGoogleMock(&argc, argv);
    return RUN_ALL_TESTS();
}

enums.h of DLL

#include <QObject>

namespace CCS
{
    Q_NAMESPACE

    enum class DataManagerState
    {None, Configure, Ready, Active, Waiting, Stop};
    Q_ENUM_NS(DataManagerState)
}

[Christian Ehrlicher]

since it's an enum simply use QVariant::tonInt() and do a static cast to the enum

[henrik2016]

@Christian-Ehrlicher thanks for your answer.

If found a second solution here

But to begin I had to add: qRegisterMetaTypeCCS::DataManagerState("state");

Now it works.