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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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5
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from kytos.core.common import EntityStatus |
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from napps.kytos.pathfinder.graph import KytosGraph |
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8
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# pylint: disable=import-error |
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from tests.helpers import ( |
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get_filter_links_fake, |
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get_topology_mock, |
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get_topology_with_metadata_mock, |
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) |
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# pylint: disable=arguments-differ, protected-access, no-member |
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17
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18
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class TestGraph(TestCase): |
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"""Tests for the Main class.""" |
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21
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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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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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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_links(self): |
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"""Test update_links.""" |
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topology = get_topology_mock() |
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self.kytos_graph.update_links(topology.links) |
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assert self.mock_graph.add_edge.call_count == len(topology.links) |
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def test_update_links_not_up(self): |
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"""Test update_links entity not up.""" |
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topology = get_topology_mock() |
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keys_num = 2 |
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for key in list(topology.links.keys())[:keys_num]: |
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topology.links[key].status = EntityStatus.DOWN |
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self.kytos_graph.update_links(topology.links) |
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assert self.mock_graph.add_edge.call_count == len(topology.links) - keys_num |
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# pylint: disable=consider-using-dict-items |
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def test_update_nodes_not_up(self): |
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"""Test update_nodes entity not up.""" |
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topology = get_topology_mock() |
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keys_num = 2 |
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for key in list(topology.switches)[:keys_num]: |
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topology.switches[key].status = EntityStatus.DISABLED |
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for key in topology.switches: |
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topology.switches[key].interfaces = {} |
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83
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84
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self.kytos_graph.update_nodes(topology.switches) |
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assert self.mock_graph.add_node.call_count == len(topology.switches) - keys_num |
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86
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87
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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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92
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edge_count = sum( |
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(len(sw.interfaces.values()) for sw in topology.switches.values()) |
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94
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) |
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node_count = len(topology.switches) + edge_count |
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assert self.mock_graph.add_edge.call_count == edge_count |
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assert self.mock_graph.add_node.call_count == node_count |
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99
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def test_update_nodes_2(self): |
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"""Test update nodes.""" |
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102
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effect = MagicMock(side_effect=AttributeError) |
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103
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104
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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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108
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109
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self.assertRaises(AttributeError) |
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111
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def test_remove_switch_hops(self): |
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"""Test remove switch hops.""" |
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circuit = { |
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"hops": [ |
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"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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] |
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} |
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self.kytos_graph._remove_switch_hops(circuit) |
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expected_circuit = { |
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"hops": ["00:00:00:00:00:00:00:01:1", "00:00:00:00:00:00:00:01:2"] |
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} |
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self.assertEqual(circuit, expected_circuit) |
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127
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128
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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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k_shortest_paths = self.kytos_graph.k_shortest_paths(source, dest) |
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134
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mock_shortest_simple_paths.assert_called_with( |
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self.kytos_graph.graph, source, dest, weight=None |
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) |
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self.assertEqual(k_shortest_paths, ["any"]) |
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139
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@patch("napps.kytos.pathfinder.graph.graph.combinations", autospec=True) |
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def test_constrained_k_shortest_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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mandatory_metrics = {"bandwidth": 100} |
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flexible_metrics = {"utilization": 2} |
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mock_combinations.return_value = [(("utilization", 2),)] |
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constrained_k_shortest_paths = [["path1"], ["path2"]] |
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149
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self.kytos_graph.graph.edge_subgraph = MagicMock(return_value=None) |
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self.kytos_graph.k_shortest_paths = MagicMock( |
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return_value=constrained_k_shortest_paths |
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) |
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self.kytos_graph._filter_links = MagicMock(side_effect=get_filter_links_fake) |
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k_shortest_paths = self.kytos_graph.constrained_k_shortest_paths( |
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source, |
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dest, |
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minimum_hits=minimum_hits, |
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mandatory_metrics=mandatory_metrics, |
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flexible_metrics=flexible_metrics, |
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160
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) |
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162
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self.kytos_graph.k_shortest_paths.assert_has_calls( |
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[ |
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164
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call( |
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source, |
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166
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dest, |
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weight=None, |
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k=1, |
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graph=None, |
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) |
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] |
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) |
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173
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self.kytos_graph._filter_links.assert_called() |
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for constrained_path in k_shortest_paths: |
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assert constrained_path["hops"] in constrained_k_shortest_paths |
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assert constrained_path["metrics"] == { |
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"bandwidth": 100, |
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"utilization": 2, |
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} |
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180
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181
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1 |
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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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186
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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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190
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191
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result = self.kytos_graph.get_link_metadata(endpoint_a, endpoint_b) |
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192
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assert result == metadata |
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194
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195
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def test_update_link_metadata(self): |
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"""Test update link metadata.""" |
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graph = MagicMock() |
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link = MagicMock() |
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199
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endpoint_a_id = 1 |
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200
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endpoint_b_id = 2 |
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link.endpoint_a.id = endpoint_a_id |
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link.endpoint_b.id = endpoint_b_id |
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203
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link.metadata.items.return_value = [("reliability", 50)] |
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self.kytos_graph.graph = graph |
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self.kytos_graph.update_link_metadata(link) |
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call_res = str(self.kytos_graph.graph._mock_mock_calls) |
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assert "__getitem__(1)" in call_res |
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assert "__getitem__(2)" in call_res |
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assert "__setitem__('reliability', 50)" in call_res |
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211
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def test_update_link_unsupported_metadata(self): |
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"""Test update link metadata with an unsupported key.""" |
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1 |
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graph = MagicMock() |
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link = MagicMock() |
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endpoint_a_id = 1 |
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endpoint_b_id = 2 |
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link.endpoint_a.id = endpoint_a_id |
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link.endpoint_b.id = endpoint_b_id |
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link.metadata.items.return_value = [("random_metric", 50)] |
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self.kytos_graph.graph = graph |
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self.kytos_graph.update_link_metadata(link) |
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assert self.kytos_graph.graph._mock_mock_calls == [] |
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kytos-ng /
pathfinder
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