def setUp(self):
    # Mock the device
    self.mock_device = mock.Mock(spec=device_utils.DeviceUtils)
    self.mock_device.build_product = 'blueline'
    self.mock_device.adb = mock.Mock(spec=adb_wrapper.AdbWrapper)
    self.mock_device.FileExists.return_value = True

    self.cpu_temp = cpu_temperature.CpuTemperature(self.mock_device)
    self.cpu_temp.InitThermalDeviceInformation()