Avoid crash if failed to resolve the IP from install.inf (bsc#1161217) #1028
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If install.inf contains an IP in the "hostname" field, YaST tries to resolve that to get a valid hostname. But there was a bug and if that resolution was not possible, YaST was crashing.
See https://bugzilla.suse.com/show_bug.cgi?id=1161217
There was a test to verify the correct behavior... but the test was as broken as the code.
In addition, I detected a dummy test that was testing the behavior of a fully mocked method. In the first two commits of this pull request, I tried to turn that into a reasonable test that, hopefully, fits the original intention of the test.