Re-initiating the discussion with a seemingly busy Professor
First of all, professors are busy. They need to do research and teach. They need to write and then publish papers and handle all matters related to teaching (prepare for course materials, exams, grading exams,... etc). So, two weeks not relying the e-mail sounds normal to me.

As in you case,


  He also remarked that he is preparing to give a short test to decide where I stand in the project. 


and 


  I had informed him that I was quite familiar with tools/skills needed for the project.


sound like you are ready for the test to convince him that you are qualified to join his project.

I would suggest you to send him an e-mail to tell him that you are ready for the test and asking what is the most convenient time for him to conduct it. 

Surely, you can tell him the literature survey undertaken during this period. I am not sure about mentioning skills have been learnt during the two weeks period. To me, any skill that can be learnt in two weeks is not worth mentioning.

Good Luck !