What I tend to do with this test is ask to see her hands whilst holding out yours to see if she complies. If she puts her hands palms down onto your then this is good but if she puts them the other way round you need to go and just turn them around. Ok after that bit you need to lower them and see if she does the same. Next squeeze her hands and see if she squeezes back to see if attraction is present.
What I like to do after that bit is to interlock fingers with her and start moving them around whilst rambling on about something random but try and slow down your speech and sound a bit sexual. I like to use this routine when I want to kiss close.
So while your hands are interlocked and moving around, slow down a bit and say something along the lines of "Out of 10, how good of a kisser do you think you are"? She will say what ever or "Not sure".. You then follow up with "Well let's find out then and move in for the kill
I think this is great but make sure attraction and comfort is there before you attempt this otherwise it more than likely will not succeed.