Do girls use this trick to test guys?

well mister guru..for myself i don't need a man to pay anything for me. and men will always think that way. i believe as that cliche' goes when a man does it its o.k. but when a woman does anything of that nature we are no good..well i believe we girls/women need to know who we are with.. if a man has paid before and is taking me out again then i know hes got my back but if little things like not him not having enough for something or things like that then i am aware that yes i will have to pay for him and i which i have no problem in doing. and no i think its just in our nature that's how we determine things in life. testing waters. i see nothing wrong in that..but men will always think we are so.

I don't think any girl uses that "trick". It's actually not even a trick. A girl should offer to pay for a few dates too.

That's not a test, it just proves that they are a gold digger, it's how those types of girls are.
A girl that isn't a gold digger doesn't want a guy to pay for every date as it normally makes them uncomfortable for having everything just given to them and like they aren't contributing to the relationship. People that truly care about each other split paying for one another as it is something nice to do for each other. One paying for everything and the other paying for nothing is not how a good relationship works.

No trick. This is what they do. Get used to it.

You may assume from Katie's response that it's not trick. She really is a gold digger.

Women like to be looked after. Remember that in her mind she thinks; "What's mine is mine, and what's your's is our's." Deal with it. LoL.

be a man

This isn't a trick. she is trying to find out what kind of guy you are. And she doesnt want to ask out straight. Because she doesn't know if you will lie or not. Be a gentlemen towards her.