def test_unpack_nddata(testdata, testvar, testmask):
nd = NDAstroData(testdata, mask=testmask)
nd.variance = testvar
out_data, out_mask, out_var = NDStacker.none(nd)
assert_allclose(out_data, testdata)
assert_allclose(out_var, testvar)
assert_allclose(out_mask, testmask)
def test_no_rejection(testdata):
out_data, out_mask, out_var = NDStacker.none(testdata)
assert_allclose(out_data, testdata)
assert out_var is None
assert out_mask is None