add a couple of the most basic tests using Pytest

I'm super-unsure about this; I don't really like all the magic, but
we'll see, I guess?

1 files changed, 128 insertions, 0 deletions

diff --git a/test/conftest.py b/test/conftest.py
new file mode 100644
index 0000000..5f70bd5
--- /dev/null
+++ b/test/conftest.py
@@ -0,0 +1,128 @@
+# Copyright (c) 2023 Egor Tensin <Egor.Tensin@gmail.com>
+# This file is part of the "cimple" project.
+# For details, see https://github.com/egor-tensin/cimple.
+# Distributed under the MIT License.
+
+import logging
+import os
+import random
+
+from pytest import fixture
+
+from .lib.process import run, run_async
+
+
+class CmdLineOption:
+    def __init__(self, codename, help_string):
+        self.codename = codename
+        self.help_string = help_string
+
+    @property
+    def cmd_line(self):
+        return f"--{self.codename.replace('_', '-')}"
+
+
+class CmdLineBinary(CmdLineOption):
+    def __init__(self, name):
+        self.name = name
+        super().__init__(self.get_code_name(), self.get_help_string())
+
+    def get_code_name(self):
+        return f'{self.name}_binary'
+
+    @property
+    def basename(self):
+        return f'cimple-{self.name}'
+
+    def get_help_string(self):
+        return f'{self.basename} binary path'
+
+
+CMD_LINE_BINARIES = [CmdLineBinary(name) for name in ('server', 'worker', 'client')]
+
+
+class CmdLineVersion(CmdLineOption):
+    def __init__(self):
+        super().__init__('project_version', 'project version')
+
+
+CMD_LINE_VERSION = CmdLineVersion()
+CMD_LINE_OPTIONS = CMD_LINE_BINARIES + [CMD_LINE_VERSION]
+
+
+def pytest_addoption(parser):
+    for opt in CMD_LINE_OPTIONS:
+        parser.addoption(opt.cmd_line, required=True, help=opt.help_string)
+
+
+def pytest_generate_tests(metafunc):
+    for opt in CMD_LINE_OPTIONS:
+        if opt.codename in metafunc.fixturenames:
+            metafunc.parametrize(opt.codename, metafunc.config.getoption(opt.codename))
+
+
+@fixture(scope='session')
+def rng():
+    random.seed()
+
+
+class Paths:
+    def __init__(self, pytestconfig):
+        for binary in CMD_LINE_BINARIES:
+            path = pytestconfig.getoption(binary.codename)
+            logging.info('%s path: %s', binary.basename, path)
+            setattr(self, binary.codename, path)
+
+
+@fixture
+def paths(pytestconfig):
+    return Paths(pytestconfig)
+
+
+@fixture
+def version(pytestconfig):
+    return pytestconfig.getoption(CMD_LINE_VERSION.codename)
+
+
+@fixture
+def server_port(rng):
+    return str(random.randint(2000, 50000))
+
+
+@fixture
+def sqlite_path(tmp_path):
+    return os.path.join(tmp_path, 'cimple.sqlite')
+
+
+@fixture
+def server(paths, server_port, sqlite_path):
+    with run_async(paths.server_binary, '--port', server_port, '--sqlite', sqlite_path) as server:
+        yield
+    assert server.returncode == 0
+
+
+@fixture
+def workers(paths, server_port):
+    args = [paths.worker_binary, '--host', '127.0.0.1', '--port', server_port]
+    with run_async(*args) as worker1, run_async(*args) as worker2:
+        yield
+    assert worker1.returncode == 0
+    assert worker2.returncode == 0
+
+
+@fixture
+def server_and_workers(server, workers):
+    yield
+
+
+class Client:
+    def __init__(self, binary):
+        self.binary = binary
+
+    def run(self, *args):
+        return run(self.binary, *args)
+
+
+@fixture
+def client(paths):
+    return Client(paths.client_binary)