def test_unable_to_set_attributes(self, lineage: Lineage):
x = lineage.view()
with pytest.raises(RuntimeError):
x.names = lineage.names[::-1]
with pytest.raises(RuntimeError):
x.colors = lineage.colors[::-1]
def test_shares_memory(self, lineage: Lineage):
x = lineage.view()
assert x.owner is lineage
assert isinstance(x.T, LineageView)
assert np.shares_memory(x.X, lineage.X)
assert np.shares_memory(x.names, lineage.names)
assert np.shares_memory(x.colors, lineage.colors)
assert x._names_to_ixs is lineage._names_to_ixs
def test_double_view_owner(self, lineage: Lineage):
x = lineage.view().view()
assert x.owner is lineage