WARNING: An expectation of `:value` was set on `nil`. To allow expectations on `nil` and suppress this message, set `RSpec::Mocks.configuration.allow_message_expectations_on_nil` to `true`. To disallow expectations on `nil`, set `RSpec::Mocks.configuration.allow_message_expectations_on_nil` to `false`. Called from /home/jbond/git/puppet/modules/wmflib/spec/unit/facter/disk_type_spec.rb:15:in `block (3 levels) in <top (required)>'.