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# This file is part of cloud-init. See LICENSE file for license information.
import os
import logging
import pytest
import sys
from contextlib import contextmanager
from tests.integration_tests import integration_settings
from tests.integration_tests.platforms import (
dynamic_client,
LxdContainerClient,
client_name_to_class
)
log = logging.getLogger('integration_testing')
log.addHandler(logging.StreamHandler(sys.stdout))
log.setLevel(logging.INFO)
def pytest_runtest_setup(item):
"""Skip tests on unsupported clouds.
A test can take any number of marks to specify the platforms it can
run on. If a platform(s) is specified and we're not running on that
platform, then skip the test. If platform specific marks are not
specified, then we assume the test can be run anywhere.
"""
all_platforms = client_name_to_class.keys()
supported_platforms = set(all_platforms).intersection(
mark.name for mark in item.iter_markers())
current_platform = integration_settings.PLATFORM
if supported_platforms and current_platform not in supported_platforms:
pytest.skip('Cannot run on platform {}'.format(current_platform))
# disable_subp_usage is defined at a higher level, but we don't
# want it applied here
@pytest.fixture()
def disable_subp_usage(request):
pass
@pytest.fixture(scope='session', autouse=True)
def setup_image():
"""Setup the target environment with the correct version of cloud-init.
So we can launch instances / run tests with the correct image
"""
client = dynamic_client()
log.info('Setting up environment for %s', client.datasource)
if integration_settings.CLOUD_INIT_SOURCE == 'NONE':
pass # that was easy
elif integration_settings.CLOUD_INIT_SOURCE == 'IN_PLACE':
if not isinstance(client, LxdContainerClient):
raise ValueError(
'IN_PLACE as CLOUD_INIT_SOURCE only works for LXD')
# The mount needs to happen after the instance is launched, so
# no further action needed here
elif integration_settings.CLOUD_INIT_SOURCE == 'PROPOSED':
client.launch()
client.install_proposed_image()
elif integration_settings.CLOUD_INIT_SOURCE.startswith('ppa:'):
client.launch()
client.install_ppa(integration_settings.CLOUD_INIT_SOURCE)
elif os.path.isfile(str(integration_settings.CLOUD_INIT_SOURCE)):
client.launch()
client.install_deb()
if client.instance:
# Even if we're keeping instances, we don't want to keep this
# one around as it was just for image creation
client.destroy()
log.info('Done with environment setup')
@contextmanager
def _client(request, fixture_utils):
"""Fixture implementation for the client fixtures.
Launch the dynamic IntegrationClient instance using any provided
userdata, yield to the test, then cleanup
"""
user_data = fixture_utils.closest_marker_first_arg_or(
request, 'user_data', None)
with dynamic_client(user_data=user_data) as instance:
yield instance
@pytest.yield_fixture
def client(request, fixture_utils):
"""Provide a client that runs for every test."""
with _client(request, fixture_utils) as client:
yield client
@pytest.yield_fixture(scope='module')
def module_client(request, fixture_utils):
"""Provide a client that runs once per module."""
with _client(request, fixture_utils) as client:
yield client
@pytest.yield_fixture(scope='class')
def class_client(request, fixture_utils):
"""Provide a client that runs once per class."""
with _client(request, fixture_utils) as client:
yield client
def pytest_assertrepr_compare(op, left, right):
"""Custom integration test assertion explanations.
See
https://docs.pytest.org/en/stable/assert.html#defining-your-own-explanation-for-failed-assertions
for pytest's documentation.
"""
if op == "not in" and isinstance(left, str) and isinstance(right, str):
# This stanza emits an improved assertion message if we're testing for
# the presence of a string within a cloud-init log: it will report only
# the specific lines containing the string (instead of the full log,
# the default behaviour).
potential_log_lines = right.splitlines()
first_line = potential_log_lines[0]
if "DEBUG" in first_line and "Cloud-init" in first_line:
# We are looking at a cloud-init log, so just pick out the relevant
# lines
found_lines = [
line for line in potential_log_lines if left in line
]
return [
'"{}" not in cloud-init.log string; unexpectedly found on'
" these lines:".format(left)
] + found_lines
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