def METHOD_NAME(self):
    utime_mock = Mock(
        netValues = [(Mock(inst=111),'dummyprocess',12345)],
        netPrevValues = [(Mock(inst=111),'dummyprocess',12354)]
    )
    group = {'proc.psinfo.utime':utime_mock}
    m_repo = ReportingMetricRepository(group)
    c_utime = m_repo.previous_value('proc.psinfo.utime',111)
    self.assertEquals(c_utime,12354)