From a friend I expect and offer honesty. That is one thing. So a true friend can tell me what they think even if I disagree.
But what I also expect in a friendship is making an attempt to try to understand the other one even if the opinions mismatch. I expect that and I also try to offer that.
And that is implicitly the third thing. When you expect something in a friendship then at the same time you should also offer it to to your friend.