TST: Test with generator input.
TST: Test with generator input.

Currently failing, fix to follow.

villalonreina/dipy,nilgoyyou/dipy,matthieudumont/dipy,FrancoisRheaultUS/dipy,demianw/dipy,demianw/dipy,FrancoisRheaultUS/dipy,villalonreina/dipy,StongeEtienne/dipy,nilgoyyou/dipy,matthieudumont/dipy,JohnGriffiths/dipy,JohnGriffiths/dipy,sinkpoint/dipy,StongeEtienne/dipy,sinkpoint/dipy