Stub set_shipments_cost where we're actually testing that tax rate is being adjusted
Stub set_shipments_cost where we're actually testing that tax rate is being adjusted

We're not testing that set_shipments_cost is being called within this context, so using should_receive is wrong

bjornlinder/Spree,bjornlinder/Spree,Hates/spree,Hates/spree,Hates/spree,bjornlinder/Spree,Hates/spree