Gmock: save a pointer of a passed argument or compare by address in expected call-CodePudding

Suppose I have a method

void Mock::foo(const A& obj);

and I want to check that it was called exactly with the object obj rather than its copy:

A obj;

EXPECT_CALL(mock, foo(obj));

mock->foo(obj);

How can I check this? I found Address(m) matcher here. But I cannot find it in ::testing, i.e. it does not compile.

CodePudding user response：

As mentioned in comments, ::testing::Address() matcher was introduced in GoogleTest 1.11.

You can use instead ::testing::Ref() matcher, which does the same thing underneath (comparing addresses) and is available since at least GoogleTest 1.8 (see it online):

#include <gmock/gmock.h>

struct Data
{};

struct Mock
{
    MOCK_METHOD(void, foo, (const Data& d), ());
};

struct ClassUnderTest
{
    Mock* dependency;
    void methodUnderTest(const Data& d)
    {
        dependency->foo(d);
    }
    void methodThatCopies(const Data& d)
    {
        Data copy = d;
        dependency->foo(copy);
    }
};

TEST(X, Correct)
{
    Mock m;
    Data d;
    ClassUnderTest uut {&m};

    EXPECT_CALL(m, foo(::testing::Ref(d)));
    uut.methodUnderTest(d);
}

TEST(X, Fail)
{
    Mock m;
    Data d;
    ClassUnderTest uut {&m};

    EXPECT_CALL(m, foo(::testing::Ref(d)));
    uut.methodThatCopies(d);
}

int main(int argc, char** argv)
{
    ::testing::InitGoogleTest(&argc, argv);
    return RUN_ALL_TESTS();
}