Comments on: the net value of tests

By: szczepiq

szczepiq — Sat, 09 Oct 2010 09:17:55 +0000

Great point Dierk, I missed that. Yet, I think that in my particular situation the discount for cost is a bit smaller, e.g: 55 – 35. Therefore I still prefer 50 – 20 (30 net value) than 55 – 35 (20 net value).

I will update my post to accommodate cost discount.

By: Dierk König

Dierk König — Sat, 09 Oct 2010 06:27:35 +0000

You are discounting the value to the marginal value but not the costs to the marginal costs.
Even with duplication, the costs of initially writing the tests would go down massively. With proper factoring of the tests also the maintenance costs would.

I would expect something like 55 – 25.

By: hamlet d'arcy

hamlet d'arcy — Fri, 08 Oct 2010 19:03:24 +0000

this is a great post Szczepan. I just google searched for it specifically so that I could send the link to my new team.