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| | #! /usr/bin/python3
# SPDX-License-Identifier: GPL-2.0-or-later
#
# tasst - Test A Simple Socket Transport
# library of test helpers for passt & pasta
#
# tasst/site.py - Manage simulated network sites for testing
#
# Copyright Red Hat
# Author: David Gibson <david@gibson.dropbear.id.au>
import contextlib
import avocado
from avocado.utils.process import CmdError
from tasst import Tasst
class Site(contextlib.AbstractContextManager):
"""
A (usually virtual or simulated) location where we can execute
commands and configure networks.
"""
def __init__(self, name):
self.name = name # For debugging
def __enter__(self):
raise NotImplementedError
def __exit__(self, *exc_details):
raise NotImplementedError
def output(self, cmd, **kwargs):
raise NotImplementedError
def fg(self, cmd, **kwargs):
self.output(cmd, **kwargs)
def require_cmds(self, *cmds):
missing = [c for c in cmds
if self.fg('type {}'.format(c), ignore_status=True) != 0]
if missing:
raise avocado.TestCancel("Missing commands {} on {}"
.format(', '.join(missing), self.name))
class SiteTasst(Tasst):
"""
Basic tests for executing commands on sites
:avocado: disable
:avocado: tags=meta
"""
timeout = 1.0
# Derived classes must redefine this
def setup_site(self):
raise NotImplementedError("{} must implement setup_site() method".format(type(self).__name__))
def test_true(self):
with self.setup_site() as site:
site.fg('true')
def test_false(self):
with self.setup_site() as site:
self.assertRaises(CmdError, site.fg, 'false')
def test_echo(self):
with self.setup_site() as site:
s = 'Hello tasst'
out = site.output('echo {}'.format(s))
self.assertEquals(out, s.encode('utf-8'))
# Represents the host on which the tests are running, as opposed to
# some simulated host created by the tests
class RealHost(Site):
def __init__(self):
super().__init__('REAL_HOST')
def __enter__(self):
return self
def __exit__(self, *exc_details):
pass
def output(self, cmd, sudo=False, **kwargs):
assert not sudo, "BUG: Shouldn't run commands with privilege on host"
return avocado.utils.process.system_output(cmd, **kwargs)
def fg(self, cmd, sudo=False, **kwargs):
assert not sudo, "BUG: Shouldn't run commands with privilege on host"
return avocado.utils.process.system(cmd, **kwargs)
REAL_HOST = RealHost()
class RealHostTasst(SiteTasst):
def setup_site(self):
return REAL_HOST
|