[linux] 5.6.6 test failures: test_cpu_affinity, test_ionice_linux

[mgorny]

Platform

• Gentoo Linux
• psutil 5.6.6

Bug description
Two tests fail when run on my system:

======================================================================                                                                             
FAIL: psutil.tests.test_linux.TestProcessAgainstStatus.test_cpu_affinity                                                                           
----------------------------------------------------------------------                                                                             
Traceback (most recent call last):                                                                                                                 
  File "/tmp/portage/dev-python/psutil-5.6.6/work/psutil-5.6.6-python2_7/lib/psutil/tests/test_linux.py", line 2101, in test_cpu_affinity
    self.proc.cpu_affinity(), list(range(min_, max_ + 1)))                                                                                         
AssertionError: Lists differ: [0, 1] != [0, 1, 2, 3]                                                                                               
                                                                         
Second list contains 2 additional elements.                              
First extra element 2:                                                                                                                             
2                                                                                                                                                  
                                                                                                                                                   
- [0, 1]                                                                                                                                           
+ [0, 1, 2, 3]                                                                                                                                     
                                                                                                                                                   
======================================================================                                                                             
FAIL: psutil.tests.test_process.TestProcess.test_ionice_linux                                                                                      
----------------------------------------------------------------------                                                                             
Traceback (most recent call last):                                       
  File "/tmp/portage/dev-python/psutil-5.6.6/work/psutil-5.6.6-python2_7/lib/psutil/tests/test_process.py", line 358, in test_ionice_linux
    self.assertEqual(p.ionice()[0], psutil.IOPRIO_CLASS_NONE)                                                                                      
AssertionError: 3 != 0                                                   
                                                                                                                                                   
----------------------------------------------------------------------
Ran 542 tests in 12.857s                                                                                                                           
                                    
FAILED (failures=2, skipped=204)

I don't know about the first one but the second one seems to assume tests will always be run with 'none' ionice.