@dispatch.expects(:open).once.with('/proc/stat').
returns open(Rails.root.join('test/fixtures/files/proc_stat'))
@dispatch.fail_jobs(before: 'reboot')
@dispatch.expects(:open).once.with('/proc/stat').
returns open(Rails.root.join('test/fixtures/files/proc_stat'))
@dispatch.fail_jobs(before: 'reboot')