dojo-se/sudoku — pull request #1 by thiagogsr (2014-07-04 12:33:27+00:00)
Title: Update sudoku.rb with all tests

Update sudoku.rb with all tests

* Test that is invalid if all elements equal to zero
* Test that is invalid if any element is repeated in the same column
* Test that is invalid if any element is repeated in the same row
* Test that is valid if no element is repeated in the same column and row