def test_invalid_view_after_resize(self):
dtype = np.dtype([('position', np.float32, 3),
('texcoord', np.float32, 2),
('color', np.float32, 4)])
data = np.zeros(10, dtype=dtype)
B = DataBuffer(data)
Z = B[5:]
B.resize(5)
assert Z._valid is False
