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c++googlemock

Verify parameter has same value for multiple expected calls in gmock

Given some mock function which takes at least one parameter:

MOCK_METHOD1(fun, void(int p));

How can i EXPECT_CALL two identical calls in terms of the value of parameter p? I don't care what the value of p actually is, as long as it is the same for both calls to the function fun. I have no way to predict the value of p in the test case.

Solution

  • Option #1

    EXPECT_CALL( mock, fun( testing::Truly( []( int p ) {
                 static int initial = p;
                 return initial == p;
             } ) ) )
    .Times( 2 );

    Option #2

    int p = 0;
testing::Sequence seq;
EXPECT_CALL( mock, fun( _ ) )
    .InSequence( seq )
    .WillOnce( testing::SaveArg< 0 >( &p ) );
EXPECT_CALL( mock, fun( testing::Eq( testing::ByRef( p ) ) ) )
    .Times( 1 )
    .InSequence( seq );