RAppArmor unit tests
This function loads the 'testthat' package and runs a number of unit tests for RAppArmor. Note that the tests assume that the main process is unconfined. Try running it both as root and as a regular user to cover both cases.
Occasionaly, one or two tests might fail due to random fluctuations in available memory, cpu, etc. If this happens, try running the tests again, possibly with less other pograms running in the background.
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