Run unit tests during build.
Run unit tests during build.

Co-authored-by: Uwe L. Korn <61df1ade108ad4f778ae80c035cf888799bb0fe0@users.noreply.github.com>
patricksnape/staged-recipes,johanneskoester/staged-recipes,hadim/staged-recipes,scopatz/staged-recipes,hadim/staged-recipes,scopatz/staged-recipes,johanneskoester/staged-recipes,goanpeca/staged-recipes,igortg/staged-recipes,stuertz/staged-recipes,ocefpaf/staged-recipes,ReimarBauer/staged-recipes,igortg/staged-recipes,conda-forge/staged-recipes,conda-forge/staged-recipes,jochym/staged-recipes,patricksnape/staged-recipes,ReimarBauer/staged-recipes,mariusvniekerk/staged-recipes,mariusvniekerk/staged-recipes,jakirkham/staged-recipes,ocefpaf/staged-recipes,kwilcox/staged-recipes,goanpeca/staged-recipes,jakirkham/staged-recipes,stuertz/staged-recipes,kwilcox/staged-recipes,jochym/staged-recipes