core-extra/daemon/tests/test_links.py

from core.emulator.emudata import LinkOptions
from core.emulator.enumerations import NodeTypes


def create_ptp_network(session, ip_prefixes):
    # create nodes
    node_one = session.add_node()
    node_two = session.add_node()

    # link nodes to net node
    interface_one = ip_prefixes.create_interface(node_one)
    interface_two = ip_prefixes.create_interface(node_two)
    session.add_link(node_one.id, node_two.id, interface_one, interface_two)

    # instantiate session
    session.instantiate()

    return node_one, node_two


class TestLinks:
    def test_ptp(self, session, ip_prefixes):
        # given
        node_one = session.add_node()
        node_two = session.add_node()
        interface_one = ip_prefixes.create_interface(node_one)
        interface_two = ip_prefixes.create_interface(node_two)

        # when
        session.add_link(node_one.id, node_two.id, interface_one, interface_two)

        # then
        assert node_one.netif(interface_one.id)
        assert node_two.netif(interface_two.id)

    def test_node_to_net(self, session, ip_prefixes):
        # given
        node_one = session.add_node()
        node_two = session.add_node(_type=NodeTypes.SWITCH)
        interface_one = ip_prefixes.create_interface(node_one)

        # when
        session.add_link(node_one.id, node_two.id, interface_one)

        # then
        assert node_two.all_link_data(0)
        assert node_one.netif(interface_one.id)

    def test_net_to_node(self, session, ip_prefixes):
        # given
        node_one = session.add_node(_type=NodeTypes.SWITCH)
        node_two = session.add_node()
        interface_two = ip_prefixes.create_interface(node_two)

        # when
        session.add_link(node_one.id, node_two.id, interface_two=interface_two)

        # then
        assert node_one.all_link_data(0)
        assert node_two.netif(interface_two.id)

    def test_net_to_net(self, session):
        # given
        node_one = session.add_node(_type=NodeTypes.SWITCH)
        node_two = session.add_node(_type=NodeTypes.SWITCH)

        # when
        session.add_link(node_one.id, node_two.id)

        # then
        assert node_one.all_link_data(0)

    def test_link_update(self, session, ip_prefixes):
        # given
        delay = 50
        bandwidth = 5000000
        per = 25
        dup = 25
        jitter = 10
        node_one = session.add_node()
        node_two = session.add_node(_type=NodeTypes.SWITCH)
        interface_one_data = ip_prefixes.create_interface(node_one)
        session.add_link(node_one.id, node_two.id, interface_one_data)
        interface_one = node_one.netif(interface_one_data.id)
        assert interface_one.getparam("delay") != delay
        assert interface_one.getparam("bw") != bandwidth
        assert interface_one.getparam("loss") != per
        assert interface_one.getparam("duplicate") != dup
        assert interface_one.getparam("jitter") != jitter

        # when
        link_options = LinkOptions()
        link_options.delay = delay
        link_options.bandwidth = bandwidth
        link_options.per = per
        link_options.dup = dup
        link_options.jitter = jitter
        session.update_link(
            node_one.id,
            node_two.id,
            interface_one_id=interface_one_data.id,
            link_options=link_options,
        )

        # then
        assert interface_one.getparam("delay") == delay
        assert interface_one.getparam("bw") == bandwidth
        assert interface_one.getparam("loss") == per
        assert interface_one.getparam("duplicate") == dup
        assert interface_one.getparam("jitter") == jitter

    def test_link_delete(self, session, ip_prefixes):
        # given
        node_one = session.add_node()
        node_two = session.add_node()
        interface_one = ip_prefixes.create_interface(node_one)
        interface_two = ip_prefixes.create_interface(node_two)
        session.add_link(node_one.id, node_two.id, interface_one, interface_two)
        assert node_one.netif(interface_one.id)
        assert node_two.netif(interface_two.id)

        # when
        session.delete_link(
            node_one.id, node_two.id, interface_one.id, interface_two.id
        )

        # then
        assert not node_one.netif(interface_one.id)
        assert not node_two.netif(interface_two.id)