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# Copyright (c) 2023 Egor Tensin <egor@tensin.name>
# This file is part of the "cimple" project.
# For details, see https://github.com/egor-tensin/cimple.
# Distributed under the MIT License.
from collections import namedtuple
import logging
import os
from pytest import fixture
from lib import test_repo as repo
from lib.db import Database
from lib.net import random_unused_port
from lib.process import CmdLine
class Param:
def __init__(self, codename, help_string, required=True):
self.codename = codename
self.help_string = help_string
self.required = required
@property
def cmd_line(self):
return f"--{self.codename.replace('_', '-')}"
def add_to_parser(self, parser):
parser.addoption(self.cmd_line, required=self.required, help=self.help_string)
PARAMS = [
Param(f'{name}', f'cimple-{name} binary path')
for name in ('server', 'worker', 'client')
]
PARAMS += [
Param('sigsegv', 'sigsegv binary path'),
Param('project_version', 'project version'),
Param('valgrind', 'path to valgrind.sh', required=False),
Param('flamegraph', 'path to flamegraph.sh', required=False),
Param('flame_graphs_dir', 'directory to store flame graphs', required=False),
]
def pytest_addoption(parser):
for opt in PARAMS:
opt.add_to_parser(parser)
class Params:
def __init__(self, pytestconfig):
for opt in PARAMS:
setattr(self, opt.codename, None)
for opt in PARAMS:
path = pytestconfig.getoption(opt.codename)
if path is None:
continue
logging.info("'%s' parameter value: %s", opt.codename, path)
setattr(self, opt.codename, path)
@fixture(scope='session')
def params(pytestconfig):
return Params(pytestconfig)
class CmdLineValgrind(CmdLine):
def __init__(self, binary):
# Signal to Valgrind that ci scripts should obviously be exempt from
# memory leak checking:
super().__init__(binary, '--trace-children-skip=*/ci', '--')
@fixture(scope='session')
def base_cmd_line(params):
cmd_line = CmdLine.unbuffered()
valgrind = params.valgrind
if valgrind is not None:
cmd_line = CmdLine.wrap(CmdLineValgrind(valgrind), cmd_line)
return cmd_line
@fixture(scope='session')
def version(params):
return params.project_version
@fixture(scope='session')
def server_port():
return str(random_unused_port())
@fixture
def sqlite_path(tmp_path):
return os.path.join(tmp_path, 'cimple.sqlite')
@fixture
def sqlite_db(server, sqlite_path):
return Database(sqlite_path)
class CmdLineServer(CmdLine):
def log_line_means_process_ready(self, line):
return line.endswith('Waiting for new connections')
class CmdLineWorker(CmdLine):
def log_line_means_process_ready(self, line):
return line.endswith('Waiting for a new command')
@fixture
def server_exe(params):
return CmdLineServer(params.server)
@fixture
def worker_exe(params):
return CmdLineWorker(params.worker)
@fixture
def client_exe(params):
return CmdLine(params.client)
@fixture
def server_cmd(base_cmd_line, params, server_port, sqlite_path):
args = ['--port', server_port, '--sqlite', sqlite_path]
return CmdLineServer.wrap(base_cmd_line, CmdLine(params.server, *args))
@fixture
def worker_cmd(base_cmd_line, params, server_port):
args = ['--host', '127.0.0.1', '--port', server_port]
return CmdLineWorker.wrap(base_cmd_line, CmdLine(params.worker, *args))
@fixture
def client(base_cmd_line, params, server_port):
args = ['--host', '127.0.0.1', '--port', server_port]
return CmdLine.wrap(base_cmd_line, CmdLine(params.client, *args))
@fixture
def sigsegv(params):
return CmdLine(params.sigsegv)
@fixture
def server(server_cmd):
with server_cmd.run_async() as server:
yield server
assert server.returncode == 0
@fixture
def workers(worker_cmd):
with worker_cmd.run_async() as worker1, \
worker_cmd.run_async() as worker2:
yield [worker1, worker2]
assert worker1.returncode == 0
assert worker2.returncode == 0
@fixture
def flame_graph_svg(params, tmp_path, flame_graph_repo):
dir = params.flame_graphs_dir
if dir is None:
return os.path.join(tmp_path, 'flame_graph.svg')
os.makedirs(dir, exist_ok=True)
return os.path.join(dir, f'flame_graph_{flame_graph_repo.codename()}.svg')
@fixture
def profiler(params, server, workers, flame_graph_svg):
pids = [server.pid] + [worker.pid for worker in workers]
pids = map(str, pids)
cmd_line = CmdLine(params.flamegraph, flame_graph_svg, *pids)
with cmd_line.run_async() as proc:
yield
assert proc.returncode == 0
@fixture
def repo_path(tmp_path):
return os.path.join(tmp_path, 'repo')
TEST_REPOS = [
repo.TestRepoOutputSimple,
repo.TestRepoOutputEmpty,
repo.TestRepoOutputLong,
repo.TestRepoOutputNull,
repo.TestRepoSegfault,
]
STRESS_TEST_REPOS = [
repo.TestRepoOutputSimple,
repo.TestRepoOutputLong,
]
def _make_repo(repo_path, params, cls):
args = [repo_path]
if cls is repo.TestRepoSegfault:
args += [params.sigsegv]
return cls(*args)
@fixture(params=TEST_REPOS, ids=[repo.codename() for repo in TEST_REPOS])
def test_repo(repo_path, params, request):
return _make_repo(repo_path, params, request.param)
@fixture(params=STRESS_TEST_REPOS, ids=[repo.codename() for repo in STRESS_TEST_REPOS])
def stress_test_repo(repo_path, params, request):
return _make_repo(repo_path, params, request.param)
@fixture
def flame_graph_repo(stress_test_repo):
return stress_test_repo
Env = namedtuple('Env', ['server', 'workers', 'client', 'db'])
@fixture
def env(server, workers, client, sqlite_db):
return Env(server, workers, client, sqlite_db)
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