feature save test in node, removed rom network

    subgraph_list = graph.connected_subgraphs()

    assert len(subgraph_list) == 1

def test_save_load_features(tmpdir, graph):

    # Create the graph and save the features

    graph = graph.copy()

    graph.extract_features(extractor_parameters={'nfeatures': 10})

    allout = tmpdir.join("all_out.hdf")

    oneout = tmpdir.join("one_out.hdf")

    graph.save_features(allout.strpath, format='hdf')

    graph.save_features(oneout.strpath, nodes=[1], format='hdf')

    graph_no_features = graph.copy()

    graph_no_features.load_features(allout.strpath, nodes=[1], format='hdf')

    assert graph.node[1].get_keypoints().all().all() == graph_no_features.node[1].get_keypoints().all().all()

def test_filter(graph):

    def edge_func(edge):

        return edge.matches is not None and hasattr(edge, 'matches')

    graph = graph.copy()

    test_sub_graph = graph.create_node_subgraph([0, 1])

    test_sub_graph.match(k=2)

    filtered_nodes = graph.filter_nodes(lambda node: node.descriptors is not None)

    filtered_edges = graph.filter_edges(edge_func)

    filtered_edges = graph.filter_edges(lambda edge: edge.matches.empty is not True)

    assert filtered_nodes.number_of_nodes() == test_sub_graph.number_of_nodes()

    assert filtered_edges.number_of_edges() == test_sub_graph.number_of_edges()

    assert not graph[0][2].masks['symmetry'].all()

    assert not graph[0][1].masks['symmetry'].all()

def test_set_maxsize(graph):

    maxsizes = network.MAXSIZE

    assert(graph.maxsize == maxsizes[0])

    graph.maxsize = 12

    assert(graph.maxsize == maxsizes[12])

    with pytest.raises(KeyError):

        graph.maxsize = 7