Speed-up tests a bit in systems with slow hwinfo

[ancorgs]

Problem

The testsuite used to run in around 2-4 minutes in my personal system.

We have always known that we should be more aggressive mocking calls to hwinfo and some libstorage-ng operations (mostly those that result in calls to udevadm --settle). But even without that mocking, the situation was still acceptable.

Recently things became MUCH worse. Now the testsuite is much slower. I was not able to find what caused it. No luck bisecting the changes in the repository, so I guess the problem is somewhere else (some combination of changes in libstorage-ng or another YaST package, Ruby, the Tumbleweed kernel, udev and whatnot).

Solution

Even if the source of the recent slow-down is still there, I decided to introduce the long-overdue mocking for hwinfo in order to mitigate the problem.

Now the execution time is acceptable again, even if there is still room for improvement (if someone can find why/how at some point we went from a couple of minutes to ~10mins).

[coveralls]

coverage: 97.759%. remained the same when pulling 1365974663d320e347cfa6f1117edf6e4b1d2cd7 on test_performance into 5ba6fc2f5461bf570f8c4ff98f07ac64898bf7bd on master.

[yast-bot]

:heavy_check_mark: Internal Jenkins job #1140 successfully finished :heavy_check_mark: Created OBS submit request #1118993