TST - added a test that sometimes causes Segfault in dipy
TST - added a test that sometimes causes Segfault in dipy

StongeEtienne/dipy,rfdougherty/dipy,rfdougherty/dipy,sinkpoint/dipy,villalonreina/dipy,demianw/dipy,beni55/dipy,matthieudumont/dipy,jyeatman/dipy,mdesco/dipy,sinkpoint/dipy,jyeatman/dipy,Messaoud-Boudjada/dipy,FrancoisRheaultUS/dipy,StongeEtienne/dipy,demianw/dipy,nilgoyyou/dipy,samuelstjean/dipy,beni55/dipy,matthieudumont/dipy,JohnGriffiths/dipy,nilgoyyou/dipy,samuelstjean/dipy,Messaoud-Boudjada/dipy,villalonreina/dipy,JohnGriffiths/dipy,oesteban/dipy,oesteban/dipy,mdesco/dipy,samuelstjean/dipy,FrancoisRheaultUS/dipy