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"""Test Graph methods.""" |
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from unittest import TestCase |
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from unittest.mock import MagicMock, call, patch |
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# from napps.kytos.pathfinder.graph import KytosGraph |
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from graph import KytosGraph |
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from tests.helpers import (get_filter_links_fake, get_topology_mock, |
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get_topology_with_metadata_mock) |
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# pylint: disable=arguments-differ, protected-access |
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class TestGraph(TestCase): |
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"""Tests for the Main class.""" |
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@patch('networkx.Graph') |
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def setUp(self, mock_graph): |
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"""Execute steps before each tests.""" |
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self.mock_graph = mock_graph.return_value |
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self.kytos_graph = KytosGraph() |
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def test_clear(self): |
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"""Test clear.""" |
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self.kytos_graph.clear() |
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self.mock_graph.clear.assert_called() |
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def setting_update_topology(self, *args): |
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"""Set the primary elements needed to |
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test the topology update process.""" |
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(mock_update_nodes, mock_update_links) = args |
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topology = get_topology_mock() |
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self.kytos_graph.update_topology(topology) |
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self.mock_graph.clear.assert_called() |
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return mock_update_nodes, mock_update_links, topology |
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# @patch('napps.kytos.pathfinder.graph.KytosGraph.update_links') |
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# @patch('napps.kytos.pathfinder.graph.KytosGraph.update_nodes') |
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@patch('graph.KytosGraph.update_links') |
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@patch('graph.KytosGraph.update_nodes') |
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def test_update_topology_switches(self, *args): |
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"""Test update topology.""" |
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mock_update_nodes, _, topology = self.setting_update_topology(*args) |
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mock_update_nodes.assert_called_with(topology.switches) |
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# @patch('napps.kytos.pathfinder.graph.KytosGraph.update_links') |
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# @patch('napps.kytos.pathfinder.graph.KytosGraph.update_nodes') |
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@patch('graph.KytosGraph.update_links') |
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@patch('graph.KytosGraph.update_nodes') |
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def test_update_topology_links(self, *args): |
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"""Test update topology.""" |
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_, mock_update_links, topology = self.setting_update_topology(*args) |
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mock_update_links.assert_called_with(topology.links) |
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def test_update_nodes(self): |
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"""Test update nodes.""" |
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topology = get_topology_mock() |
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self.kytos_graph.update_nodes(topology.switches) |
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switch = topology.switches["00:00:00:00:00:00:00:01"] |
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calls = [call(switch.id)] |
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calls += [call(interface.id) |
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for interface in switch.interfaces.values()] |
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self.mock_graph.add_node.assert_has_calls(calls) |
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calls = [call(switch.id, interface.id) |
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for interface in switch.interfaces.values()] |
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self.mock_graph.add_edge.assert_has_calls(calls) |
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def test_update_nodes_2(self): |
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"""Test update nodes.""" |
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effect = MagicMock(side_effect=AttributeError) |
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topology = get_topology_mock() |
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with self.assertRaises(Exception): |
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with patch.object(self.mock_graph, 'add_node', effect): |
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self.kytos_graph.update_nodes(topology.switches) |
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self.assertRaises(AttributeError) |
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def test_remove_switch_hops(self): |
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"""Test remove switch hops.""" |
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circuit = {"hops": ["00:00:00:00:00:00:00:01:1", |
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"00:00:00:00:00:00:00:01", |
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"00:00:00:00:00:00:00:01:2"]} |
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self.kytos_graph._remove_switch_hops(circuit) |
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expected_circuit = {"hops": ["00:00:00:00:00:00:00:01:1", |
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"00:00:00:00:00:00:00:01:2"]} |
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self.assertEqual(circuit, expected_circuit) |
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@patch('networkx.shortest_simple_paths', return_value=["any"]) |
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def test_shortest_paths(self, mock_shortest_simple_paths): |
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"""Test shortest paths.""" |
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source, dest = "00:00:00:00:00:00:00:01:1", "00:00:00:00:00:00:00:02:2" |
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shortest_paths = self.kytos_graph.shortest_paths(source, dest) |
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mock_shortest_simple_paths.assert_called_with(self.kytos_graph.graph, |
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source, dest, None) |
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self.assertEqual(shortest_paths, ["any"]) |
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@patch('graph.combinations', autospec=True) |
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def test_constrained_flexible_paths(self, mock_combinations): |
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"""Test shortest constrained paths.""" |
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source, dest = "00:00:00:00:00:00:00:01:1", "00:00:00:00:00:00:00:02:2" |
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minimum_hits = 1 |
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base_metrics = {"apple": 1} |
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flexible_metrics = {"pear": 2} |
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mock_combinations.return_value = [(('pear', 2),)] |
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filtered_links = ["a", "b", "c"] |
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filtered_links_without_metadata = filtered_links[0:2] |
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constrained_shortest_paths = [["path1"], ["path2"]] |
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self.kytos_graph._constrained_shortest_paths = MagicMock( |
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return_value=constrained_shortest_paths) |
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self.kytos_graph._filter_links = MagicMock( |
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side_effect=get_filter_links_fake) |
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shortest_paths = self.kytos_graph.constrained_flexible_paths( |
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source, dest, minimum_hits, base=base_metrics, |
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flexible=flexible_metrics) |
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self.kytos_graph._constrained_shortest_paths.assert_has_calls([ |
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call(source, dest, filtered_links_without_metadata)]) |
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self.kytos_graph._filter_links.assert_called() |
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self.assertEqual(shortest_paths, [ |
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{"paths": constrained_shortest_paths, "metrics": |
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{"apple": 1, "pear": 2}}]) |
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def test_get_link_metadata(self): |
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"""Test metadata retrieval.""" |
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topology = get_topology_with_metadata_mock() |
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self.kytos_graph.update_nodes(topology.switches) |
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self.kytos_graph.update_links(topology.links) |
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endpoint_a = "S1:1" |
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endpoint_b = "S2:1" |
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metadata = {"reliability": 5, "bandwidth": 100, "delay": 105} |
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self.kytos_graph.get_link_metadata = MagicMock(return_value=metadata) |
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result = self.kytos_graph.get_link_metadata( |
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endpoint_a, endpoint_b) |
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self.assertEqual(result, metadata) |
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kytos /
pathfinder
