def test_calcInferredDeltas(self):
var = TupleVariation({}, [(0, 0), None, None, None])
coords = [(1, 1), (1, 1), (1, 1), (1, 1)]
var.calcInferredDeltas(coords, [])
self.assertEqual(var.coordinates, [(0, 0), (0, 0), (0, 0), (0, 0)])
