How to mock out reference parameter

[zilong]

Hi all,

class IFoo {
virtual void get_name(std::string& name) = 0;
};

class MockIFoo : public IFoo {
MOCK_METHOD1(get_name, void(std::string& name));
};

When I use this mock object in test codes, how could I set the
expectations to get out parameter as I specified, I tried this way,
but not work.
std::string dummy("foo");
EXPECT_CALL(foo, get_name(dummy));


Best regards,
Zilong

[Greg Miller]

Hi, Zilong.

You should be able to use the SetArgReferee() action.

  MockIFoo foo;

  EXPECT_CALL(foo, get_name(_))

      .WillOnce(testing::SetArgReferee<0>("dummy"));

  string dummy;

  foo.get_name(dummy);

  ASSERT_EQ("dummy", dummy);

HTH,

Greg

[zilong]

Cool, it works now, many thanks, Greg.


Best regards,
Zilong