def test_view_delitem(attr):
    adata = gen_adata((10, 10))
    getattr(adata, attr)["to_delete"] = np.ones((10, 10))
    # Shouldn’t be a subclass, should be an ndarray
    assert type(getattr(adata, attr)["to_delete"]) is np.ndarray
    view = adata[5:7, :][:, :5]
    adata_hash = joblib.hash(adata)
    view_hash = joblib.hash(view)

    getattr(view, attr).__delitem__("to_delete")

    assert not view.is_view
    assert "to_delete" not in getattr(view, attr)
    assert "to_delete" in getattr(adata, attr)
    assert adata_hash == joblib.hash(adata)
    assert view_hash != joblib.hash(view)
def test_intarray_fields(self):
        class SomeInts(Structure):
            _fields_ = [("a", c_int * 4)]

        # can use tuple to initialize array (but not list!)
        self.assertEqual(SomeInts((1, 2)).a[:], [1, 2, 0, 0])
        self.assertEqual(SomeInts((1, 2)).a[::], [1, 2, 0, 0])
        self.assertEqual(SomeInts((1, 2)).a[::-1], [0, 0, 2, 1])
        self.assertEqual(SomeInts((1, 2)).a[::2], [1, 0])
        self.assertEqual(SomeInts((1, 2)).a[1:5:6], [2])
        self.assertEqual(SomeInts((1, 2)).a[6:4:-1], [])
        self.assertEqual(SomeInts((1, 2, 3, 4)).a[:], [1, 2, 3, 4])
        self.assertEqual(SomeInts((1, 2, 3, 4)).a[::], [1, 2, 3, 4])
        # too long
        # XXX Should raise ValueError?, not RuntimeError
        self.assertRaises(RuntimeError, SomeInts, (1, 2, 3, 4, 5))