def test_image_clone(self):
vals = np.random.rand(20, 20)
xs = np.linspace(0, 10, 20)
ys = np.linspace(0, 10, 20)
ys[-1] += 0.001
img = Image({
'vals': vals,
'xs': xs,
'ys': ys
}, ['xs', 'ys'],
'vals',
rtol=10e-3)
self.assertEqual(img.clone().rtol, 10e-3)
