A case that exhibits all the possible conditions a subject can suffer from?

We have this Hungarian phrase "Állatorvosi ló", which literally translates to "Veterinarian horse".

It originated in 19th century Hungarian literature, when someone created an illustration of a horse that exhibited all the possible external and internal sicknesses a horse can have.

Nowadays it is used to describe all the possible (negative) conditions something can have.

In our concrete case, we're doing software testing for a CAT (Computer Aided Translation) software that has a QA module; and we're going to build a special project (the 'vetenarian horse') that exhibits all the possible errors the QA module can throw at us.

What would be an idiomatic word or phrase to express that?

Solution 1:

It's not exactly commonplace, but OP's QA module could be called a...

polypathological test case - having multiple chronic aliments

Personally though, I think a little dry humour wouldn't go amiss here. I'd call it a...

basket case - in a completely hopeless or useless condition

Solution 2:

"Case study" http://www.thefreedictionary.com/case+study "Before they lost their independence, [the two companies] were case studies in unsuccessful long-term planning" (T. Boone Pickens, Jr.)" So as showing all the symptoms of unsuccessful long-term planning.