Property and shared_ptr

[An Ky]

Hi,

I'm trying to mock a method call where I want to check a specific property of the passed object.

struct MockExporter : public Exporter

{

  MOCK_METHOD1(saveChannel, void(ChannelPtr));

}

with

class Channel

{

...

  QString name() const { return _name; }

...

};

typedef std::shared_ptr<Channel> ChannelPtr;

Using this in an expectation like

EXPECT_CALL(*mockExporter, saveChannel(Property(&Channel::name, Eq("RainflowMatrixX_Test2"))));

results in the following compiler error

\gmock\gmock.h:6364: Fehler: C2664: 'bool testing::internal::PropertyMatcher<Class,PropertyType>::MatchAndExplainImpl(testing::internal::false_type,const Class &,testing::MatchResultListener *) const': Konvertierung des Parameters 2 von 'const ChannelPtr' in 'const Channel &' nicht m”glich

with

[

    Class=Channel,

    PropertyType=QString

]

Ursache: Konvertierung von 'const ChannelPtr' in 'const Channel' nicht m”glich

Kein benutzerdefinierter Konvertierungsoperator verf gbar, der diese Konvertierung durchf hren kann, oder der Operator kann nicht aufgerufen werden

D:\VirtualBox\Shared\Projekte\monalysis\3rd_party\testing\gmock/gmock.h(4961): Siehe Verweis auf die Instanziierung der gerade kompilierten Funktions-template "bool testing::internal::PropertyMatcher<Class,PropertyType>::MatchAndExplain<T>(const T &,testing::MatchResultListener *) const".

with

[

    Class=Channel,

    PropertyType=QString,

    T=ChannelPtr

]

D:\VirtualBox\Shared\Projekte\monalysis\3rd_party\testing\gmock/gmock.h(4960): Bei der Kompilierung der  Klassen-template der bool testing::PolymorphicMatcher<Impl>::MonomorphicImpl<T>::MatchAndExplain(T,testing::MatchResultListener *) const-Memberfunktion

with

[

    Impl=testing::internal::PropertyMatcher<Channel,QString>,

    T=ChannelPtr

]

D:\VirtualBox\Shared\Projekte\monalysis\3rd_party\testing\gmock/gmock.h(4943): Siehe Verweis auf die Instanziierung der gerade kompilierten Klassen-template "testing::PolymorphicMatcher<Impl>::MonomorphicImpl<T>".

with

[

    Impl=testing::internal::PropertyMatcher<Channel,QString>,

    T=ChannelPtr

]

.\FrequencyDistributionWorkflowTest.cpp(382): Siehe Verweis auf die Instanziierung der gerade kompilierten Funktions-template "testing::PolymorphicMatcher<Impl>::operator testing::Matcher<T>(void) const<A1>".

with

[

    Impl=testing::internal::PropertyMatcher<Channel,QString>,

    T=ChannelPtr,

    A1=ChannelPtr

]

Sorry for being in german, rough translation is that the second argument of MatchAndExplainImpl cannot be converted from const ChannelPtr to const Channel&. 

I'm stuck here having no clue how to solve it. Should the shared_ptr argument not be used just like a plain pointer as stated in the docs?

Thanks for any help.

Greets 

An Ky

[Vlad Losev]

The problem here is that testing::Field and testing::Property only work for object references and raw object pointers. You should be able to write a custom matcher that does the same, though:

MATCHER_P(HasName, name, "") { return arg->name() == name; }

...

EXPECT_CALL(*mockExporter, saveChannel(HasName("RainflowMatrixX_Test2")));

HTH,

Vlad

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