Test plan: regulators: Load JSON config file

gistfile1.txt

                                  Test Plan
                                  ---------

x Constructor
  x Verify config file is loaded
x sighupHandler()
  x Verify config file is re-loaded
x findConfigFile()
  x Test where works
    x Test where found in test directory /etc/phosphor-regulators
    x Test where found in standard directory /usr/share/phosphor-regulators
      x Test where /etc/phosphor-regulators does not exist
      x Test where /etc/phosphor-regulators does not contain config file name
  x Test where fails
    x Configuration file does not exist
    x Unable to determine if file exists due to file system error
      * Infinite symbolic links loop
x loadConfigFile()
  x Test where works
    x Verify informational message in journal
    x Verify system data member is set to a new System object
  x Test were fails
    x Unable to find config file
    x Unable to parse file due to invalid contents
x Regression
  x Verify phosphor-regulators application started at standby
  x Verify config file is loaded from standard directory
  x Verify no unexpected messages in journal
  x Power on chassis
    x Verify configure operation occurs
    x Verify monitoring is enabled
    x Verify no unexpected messages in journal
  x Power off chassis
    x Verify monitoring is disabled
    x Verify no unexpected messages in journal