def test_layers_view():
    X = np.array([[1, 2, 3], [4, 5, 6], [7, 8, 9]])
    L = np.array([[10, 11, 12], [13, 14, 15], [16, 17, 18]])
    real_adata = ad.AnnData(X)
    real_adata.layers["L"] = L
    view_adata = real_adata[1:, 1:]
    real_hash = joblib.hash(real_adata)
    view_hash = joblib.hash(view_adata)

    assert view_adata.is_view

    with pytest.raises(ValueError):
        view_adata.layers["L2"] = L + 2

    assert view_adata.is_view  # Failing to set layer item makes adata not view
    assert real_hash == joblib.hash(real_adata)
    assert view_hash == joblib.hash(view_adata)

    view_adata.layers["L2"] = L[1:, 1:] + 2

    assert not view_adata.is_view
    assert real_hash == joblib.hash(real_adata)
    assert view_hash != joblib.hash(view_adata)
def system_error(self,
                     error_msg,
                     error_code="",
                     reviewing_user=None,
                     reviewing_service=""):
        """
        Mark that this attempt could not be completed because of a system error.
        Status should be moved to `must_retry`. For example, if Software Secure
        reported to us that they couldn't process our submission because they
        couldn't decrypt the image we sent.
        """
        if self.status in ["approved", "denied"]:
            return  # If we were already approved or denied, just leave it.

        self.error_msg = error_msg
        self.error_code = error_code
        self.reviewing_user = reviewing_user
        self.reviewing_service = reviewing_service
        self.status = "must_retry"
        self.save()