Suppose you have to design a website that shows 3 kinds of product and each category has up to 4 differente products. In the main menu you have the 3 dropdown menus each labeled with the relative category. Es. Food for pigs (Apple/Pear/Orange/Cherry) | Food for people (Tbone Steak/Spaghetti/Tomato salad) | Food for cats (Boiled chicken legs/Fish bones/Ground meat)
In the brackets (Apple/Pear/Orange/Cherry) you have the products related to the category Food for pigs.
Do Food for pigs/Food for people/Food for cats have to be links to a page category where all the 3/4 products related to that category are shown and briefly described?
These products are related to a very special field and it's not common to find someone interested in this kind of product. I don't have the possibility to test whether the categories are well designed for real users. How would you test it?