def METHOD_NAME(self):
    # Test that when we don't specify a chunk the default is to read all chunks
    # Use the single chunk test to generate a network with some data in the default
    # (0,0,0) chunk and some data the other test is supposed to ignore in chunk 001
    self.test_single_chunk()
    # Continue using this network, checking that we pick up on the data in chunk 001
    chunk0 = self.ps.load_positions()
    # Unloaded the chunks loaded by the other test. The desired behavior is then to
    # read all chunks.
    self.ps.exclude_chunk(Chunk((0, 0, 0), None))
    chunk_all = self.ps.load_positions()
    self.assertGreater(len(chunk_all), len(chunk0))