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"""Networking-related tests."""
import pytest
import yaml
from tests.integration_tests.instances import IntegrationInstance
from tests.integration_tests.integration_settings import PLATFORM
def _add_dummy_bridge_to_netplan(client: IntegrationInstance):
# Update netplan configuration to ensure it doesn't change on reboot
netplan = yaml.safe_load(
client.execute("cat /etc/netplan/50-cloud-init.yaml")
)
# Just a dummy bridge to do nothing
try:
netplan["network"]["bridges"]["dummy0"] = {"dhcp4": False}
except KeyError:
netplan["network"]["bridges"] = {"dummy0": {"dhcp4": False}}
dumped_netplan = yaml.dump(netplan)
client.write_to_file("/etc/netplan/50-cloud-init.yaml", dumped_netplan)
USER_DATA = """\
#cloud-config
updates:
network:
when: [boot]
"""
@pytest.mark.skipif(
PLATFORM not in ("lxd_container", "lxd_vm"),
reason=(
f"{PLATFORM} could make nic changes in a reboot event invalidating"
f" these tests."
),
)
@pytest.mark.user_data(USER_DATA)
class TestNetplanGenerateBehaviorOnReboot:
def test_skip(self, client: IntegrationInstance):
log = client.read_from_file("/var/log/cloud-init.log")
assert "Applying network configuration" in log
assert "Selected renderer 'netplan'" in log
client.execute(
"mv /var/log/cloud-init.log /var/log/cloud-init.log.bak"
)
netplan = yaml.safe_load(
client.execute("cat /etc/netplan/50-cloud-init.yaml")
)
client.restart()
log = client.read_from_file("/var/log/cloud-init.log")
assert "Event Allowed: scope=network EventType=boot" in log
assert "Applying network configuration" in log
assert "Running command ['netplan', 'generate']" not in log
assert (
"skipping call to `netplan generate`."
" reason: identical netplan config"
) in log
netplan_new = yaml.safe_load(
client.execute("cat /etc/netplan/50-cloud-init.yaml")
)
assert netplan == netplan_new, "no changes expected in netplan config"
def test_applied(self, client: IntegrationInstance):
log = client.read_from_file("/var/log/cloud-init.log")
assert "Applying network configuration" in log
assert "Selected renderer 'netplan'" in log
client.execute(
"mv /var/log/cloud-init.log /var/log/cloud-init.log.bak"
)
# fake a change in the rendered network config file
_add_dummy_bridge_to_netplan(client)
netplan = yaml.safe_load(
client.execute("cat /etc/netplan/50-cloud-init.yaml")
)
client.restart()
log = client.read_from_file("/var/log/cloud-init.log")
assert "Event Allowed: scope=network EventType=boot" in log
assert "Applying network configuration" in log
assert (
"skipping call to `netplan generate`."
" reason: identical netplan config"
) not in log
assert "Running command ['netplan', 'generate']" in log
netplan_new = yaml.safe_load(
client.execute("cat /etc/netplan/50-cloud-init.yaml")
)
assert netplan != netplan_new, "changes expected in netplan config"
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