def test_view_failed_delitem(attr):
    adata = gen_adata((10, 10))
    view = adata[5:7, :][:, :5]
    adata_hash = joblib.hash(adata)
    view_hash = joblib.hash(view)

    with pytest.raises(KeyError):
        getattr(view, attr).__delitem__("not a key")

    assert view.is_view
    assert adata_hash == joblib.hash(adata)
    assert view_hash == joblib.hash(view)
def test_default_group(self):
        # It exists
        self.assertTrue(Group.objects.filter(name='Default').count() == 1)

        # Verify that all new users are assigned to default group
        u = User.objects.create_user(username="default_user")
        u.refresh_from_db()
        self.assertTrue(u.groups.filter(name='Default').count() == 1)