Determine the direction an object is actually moving?

I am trying to compare the players actual direction with the direction they are facing and wish to move in but having major issues trying to find the actual movement direction.

I can determine the facing direction very easily with:

 wishDir = transform.localEulerAngles;

But I cannot figure out how to get the objects movement direction so that I can compare. I have tried:

 transform.InverseTransformDirection(rb.velocity);

I would expect this to be equal to 0,90,0 when I move to the right however it is equal to 0,0,0 (although jumps when there is acceleration).

How can I determine the direction an object is moving in?