I was wondering if it could be okay in certain situations to ask for, or suggest, a test when I feel it makes sense to do so but the DM didn't ask me to roll a dice?
To be more precise, I'll illustrate with my current character in a Warhammer game without any homebrew rules, base edition. I play as a young student who never had to face danger. The first encounter happens and some thieves are trying to kill him. The DM left me the choice of my next action, but in my opinion, in terms of roleplaying, I should have rolled a dice to see if my character completely freaked out or not.
Would it have been ok to ask for a roll in this situation? (even though it is normally not a good thing to do)
I’m looking more for "best practices" than game-specific rules, as I don't really enjoy to apply the rules by the book if it interferes with the fun of the game. I'm more of a DM than a player, so I’ve only encountered this kind of situation a couple of times, but I never dared to ask to roll since I hate it when people do it in my games.