def test_set_units_invalid(self):
q = Quantity(value=1.0, spec=[3], vector=self.vector,
abbr='m', name='meter')
v2 = self.vector.copy()
v2[4] = 1
q2 = Quantity(value=0.001, spec=[8], vector=v2,
abbr='other', name='other')
with self.assertRaises(ValueError):
q.set_units(q2)
def test_set_units_valid(self):
q = Quantity(value=1.0, spec=[3], vector=self.vector,
abbr='m', name='meter')
q2 = Quantity(value=0.001, spec=[8], vector=self.vector,
abbr='mm', name='millimeter')
q.set_units(q2)
self.assertEqual(q.value, 1.0)
self.assertSequenceEqual(q.spec, [8])
self.assertTrue(np.allclose(self.vector, q.vector))
self.assertEqual(q.abbr, 'mm')
self.assertEqual(q.name, 'millimeter')