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import socket
import sys
from pathlib import Path
import pytest
from xprocess import ProcessStarter
server_path = Path(__file__).parent.joinpath("server.py").absolute()
def request_response_cycle(tcp_port, data):
"""test started server instance by sending
request and checking response"""
with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as sock:
sock.connect(("localhost", tcp_port))
sock.sendall(bytes(data, "utf-8"))
received = str(sock.recv(1024), "utf-8")
return received == data.upper()
@pytest.mark.parametrize("proc_name", ["s1", "s2", "s3"])
def test_servers_start(tcp_port, proc_name, xprocess):
data = "bacon\n"
class Starter(ProcessStarter):
pattern = "started"
args = [sys.executable, server_path, tcp_port, "--no-children"]
xprocess.ensure(proc_name, Starter)
info = xprocess.getinfo(proc_name)
assert request_response_cycle(tcp_port, data)
assert info.isrunning()
info.terminate()
@pytest.mark.parametrize("proc_name", ["s1", "s2", "s3"])
def test_ensure_not_restart(tcp_port, proc_name, xprocess):
class Starter(ProcessStarter):
pattern = "started"
args = [sys.executable, server_path, tcp_port, "--no-children"]
proc_id = xprocess.ensure(proc_name, Starter)
info = xprocess.getinfo(proc_name)
assert xprocess.ensure(proc_name, Starter) == proc_id
assert info.isrunning()
info.terminate()
@pytest.mark.parametrize(
"proc_name,proc_pttrn,lines",
[
("s1", "started", 21),
("s2", "spam, bacon, eggs", 30),
("s3", "finally started", 130),
],
)
def test_startup_detection_max_read_lines(
tcp_port, proc_name, proc_pttrn, lines, xprocess
):
data = "bacon\n"
class Starter(ProcessStarter):
pattern = proc_pttrn
max_read_lines = lines
args = [sys.executable, server_path, tcp_port, "--no-children"]
xprocess.ensure(proc_name, Starter)
info = xprocess.getinfo(proc_name)
assert info.isrunning()
assert request_response_cycle(tcp_port, data)
info.terminate()
@pytest.mark.parametrize("proc_name", ["s1", "s2", "s3"])
def test_runtime_error_on_start_fail(tcp_port, proc_name, xprocess):
restart = False
class Starter(ProcessStarter):
pattern = "I will not be matched!"
args = [
sys.executable,
server_path,
tcp_port,
"--no-children",
"--ignore-sigterm",
]
with pytest.raises(RuntimeError):
xprocess.ensure(proc_name, Starter, restart)
# since we made xprocess fail to start the server on purpose, we cannot
# terminate it using XProcessInfo.terminate method once it does not
# know the PID, process name or even that it is running, so we tell the
# server to terminate itself.
with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as sock:
sock.connect(("localhost", tcp_port))
sock.sendall(bytes("exit\n", "utf-8"))
@pytest.mark.parametrize("proc_name", ["s1", "s2", "s3"])
def test_popen_kwargs(tcp_port, proc_name, xprocess):
class Starter(ProcessStarter):
pattern = "started"
args = [sys.executable, server_path, tcp_port, "--no-children"]
popen_kwargs = {"universal_newlines": True}
xprocess.ensure(proc_name, Starter)
info = xprocess.getinfo(proc_name)
proc = xprocess.resources[-1].popen
text_mode = proc.text_mode
assert info.isrunning()
assert text_mode
info.terminate()
|
