Revert "don't produce test files for failing tests"
Revert "don't produce test files for failing tests"

This reverts commit 7c8eec302795bb3971ca4ea439d330336787553c.

okomarov/matlab2tikz,matlab2tikz/matlab2tikz,miscco/matlab2tikz,nidrosianDeath/matlab2tikz,LJeub/matlab2tikz,RPeschke/matlab2tikz,okomarov/matlab2tikz,PeterPablo/matlab2tikz,matlab2tikz/matlab2tikz,egeerardyn/matlab2tikz,egeerardyn/matlab2tikz