Add test to cover product links generation
Add test to cover product links generation

Some versions of spree used to generate links with *_url helpers
opening the way to possible exploits regarding HTTP host spoofing
when fragment caching is used. Solidus is not affected but this spec
is to ensure that there will be no regression.

Arpsara/solidus,pervino/solidus,pervino/solidus,Arpsara/solidus,Arpsara/solidus,Arpsara/solidus,jordan-brough/solidus,jordan-brough/solidus,jordan-brough/solidus,pervino/solidus,pervino/solidus,jordan-brough/solidus