def test_zero_sample():
mpd = MeanPairwiseDistance()
with pytest.raises(
NotComputableError,
match=
r"MeanAbsoluteError must have at least one example before it can be computed"
):
mpd.compute()
def test_compute():
mpd = MeanPairwiseDistance()
y_pred = torch.Tensor([[3.0, 4.0], [-3.0, -4.0]])
y = torch.zeros(2, 2)
mpd.update((y_pred, y))
assert mpd.compute() == approx(5.0)
mpd.reset()
y_pred = torch.Tensor([[4.0, 4.0, 4.0, 4.0], [-4.0, -4.0, -4.0, -4.0]])
y = torch.zeros(2, 4)
mpd.update((y_pred, y))
assert mpd.compute() == approx(8.0)
def test_zero_div():
mpd = MeanPairwiseDistance()
with pytest.raises(NotComputableError):
mpd.compute()
