'File sizes are not equal.'

def test_is_file_size_equal_false(self):

    self._set_driver()
    drv = self._driver
    path = 'fake/path'
    size = 2
    data = mock.MagicMock()
    data.virtual_size = ((size + 1) * units.Gi)
    with mock.patch.object(image_utils, 'qemu_img_info', return_value=data):
        self.assertFalse(drv._is_file_size_equal(path, size))
