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c++googlemock

SetArrayArgument, is it really the last or lenth?

I need to set side effect to an array size of 2, looking at the following defienition:

enter image description here https://github.com/google/googletest/blob/master/googlemock/docs/CheatSheet.md

It seems like for array size of 2 the arguments should be (d.a, d.a + 1), but it does not work, only one of the array elements gets the right value. The following code works every time:

EXPECT_CALL(BFO, get(_, 2))
    .WillOnce(DoAll(SetArrayArgument<0>(d.a, d.a + 2), Return(2)));

I am a bit confused, why do I need to add two for array size of 2?

Solution

  • The notation is a bit weird, but [first, last) is [first, last[ or [first, last-1]. The last value is not included.

    An integer interval that has a finite lower or upper endpoint always includes that endpoint. Therefore, the exclusion of endpoints can be explicitly denoted by writing a .. b − 1 , a + 1 .. b , or a + 1 .. b − 1. Alternate-bracket notations like [a .. b) or [a .. b[ are rarely used for integer intervals.

    From Wikipedia.