Pairwise testing: How to create the table?

Question

Hello I have doubt regarding how to create the table for the pairwise testing. For example if I have three parameter which can each attain two different values. How do I create a table of input with all possible combination then? Would it look something like this?

    | 1 2 3
 -----------
  1 | 1 1 1
  2 | 1 2 2
  3 | 1 1 2
  4 | 1 2 1

Does each parameter corresponds to each column? However since I have 3 parameter, which each can take 2 different value. The number of test cases should be 2^3 isn't it?

Answer 1

There's a good article with links to some useful tools here:

http://blog.josephwilk.net/ruby/pairwise-testing-with-cucumber.html