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"""Module to test the KytosGraph in graph.py.""" |
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from unittest import TestCase |
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import networkx as nx |
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# Core modules to import |
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from kytos.core.interface import Interface |
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from kytos.core.link import Link |
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from kytos.core.switch import Switch |
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# module under test |
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from graph import KytosGraph |
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class TestSearchResults(TestCase): |
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"""Tests for the graph class.""" |
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def setup(self): |
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"""Setup for most tests""" |
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switches, links = self.generate_topology() |
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self.graph = KytosGraph() |
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self.graph.clear() |
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self.graph.update_nodes(switches) |
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self.graph.update_links(links) |
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self.graph.set_path_fun(nx.shortest_simple_paths) |
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def get_path(self, source, destination): |
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"""Return the shortest path""" |
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results = self.graph.shortest_paths(source, destination) |
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return results |
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def get_path_constrained(self, source, destination, metrics=None, |
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flexible_metrics=None, flexible=None): |
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"""Return the constrained shortest path""" |
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complete_metrics = KytosGraph.pack_metrics(metrics, flexible_metrics) |
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return self.graph.constrained_flexible_paths(source, destination, |
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complete_metrics, |
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flexible) |
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def test_setup(self): |
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"""Provides information on default test setup""" |
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self.setup() |
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@ staticmethod |
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def generate_topology(): |
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"""Generates a predetermined topology""" |
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switches = {} |
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links = {} |
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return (switches, links) |
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@ staticmethod |
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def create_switch(name, switches): |
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'''Add a new switch to the list of switches''' |
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switches[name] = Switch(name) |
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@ staticmethod |
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def add_interfaces(count, switch, interfaces): |
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'''Add a new interface to the list of interfaces''' |
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for i in range(1, count + 1): |
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str1 = "{}:{}".format(switch.dpid, i) |
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interface = Interface(str1, i, switch) |
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interfaces[str1] = interface |
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switch.update_interface(interface) |
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@ staticmethod |
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def create_link(interface_a, interface_b, interfaces, links): |
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'''Add a new link between two interfaces into the list of links''' |
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compounded = "{}|{}".format(interface_a, interface_b) |
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final_name = compounded |
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links[final_name] = Link( |
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interfaces[interface_a], interfaces[interface_b]) |
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@ staticmethod |
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def add_metadata_to_link(interface_a, interface_b, metrics, links): |
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'''Add metadata to an existing link in the list of links''' |
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compounded = "{}|{}".format(interface_a, interface_b) |
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links[compounded].extend_metadata(metrics) |
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kytos /
pathfinder
