This is what I heard today from one of the senior developers. His philosophy is that people who want tests just don't want to think. They don't want to invest time into understanding what the code is supposed to do and how their changes will affect everything. They are lazy coders who think that testing will solve all their problems.

I completely disagree (except the part about testing not solving all problems). I've been trying to push some testing culture forward in our company and did some for my parts as much as time allows. But it is hard when the software is not designed to be testable. It is also hard when you don't get support from your seniors and when time spent on tests is seen as wasted money.

Hearing this is discouraging.

What would say or do in this situation? Do you think testing is for lazy developers? Does your company have testing culture?