add fixtures to cart tests so test passes
add fixtures to cart tests so test passes

leadbrick/django-lfs,leadbrick/django-lfs,diefenbach/django-lfs,diefenbach/django-lfs,baffolobill/django-lfs,wisonwang/django-lfs,pigletto/django-lfs,leadbrick/django-lfs,diefenbach/django-lfs,wisonwang/django-lfs,baffolobill/django-lfs,wisonwang/django-lfs,pigletto/django-lfs,baffolobill/django-lfs,pigletto/django-lfs