If module A is very expensive to fix and has a high probability of failing in production, well of course you want to have it rock solid and should be thoroughly tested.
You could build a priority index, with something like :
priority for testing module A = cost of fixing A x probability A fails
The other problem is getting management onboard and demonstrating a ROI justifying the time spent building these tests and using them. I personally failed at that and still am trying to figure out how to get them to understand the benefits. I've progressed, but it's one heck of an uphill battle for me.
If module A is very expensive to fix and has a high probability of failing in production, well of course you want to have it rock solid and should be thoroughly tested.
You could build a priority index, with something like :
priority for testing module A = cost of fixing A x probability A fails
The other problem is getting management onboard and demonstrating a ROI justifying the time spent building these tests and using them. I personally failed at that and still am trying to figure out how to get them to understand the benefits. I've progressed, but it's one heck of an uphill battle for me.