testRefreshUserToGroupsMappingsWithFileSystemBasedConfigurationProvider fails with the following error:
Line Numbers will be inconsistent as I was testing to run it in a particular order. But the Line on which the failure occurs is
calls the function MockUnixGroupsMapping.updateGroups(); which changes the list of userGroups.
testRefreshUserToGroupsMappingsWithFileSystemBasedConfigurationProvider() tries to verify the groups before changing it and fails if testRMInitialsWithFileSystemBasedConfigurationProvider() already ran and made the changes.