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sglang/test/registered/unit/scripted_runtime/test_http_server.py
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Python

from __future__ import annotations
import unittest
from sglang.test.ci.ci_register import register_cpu_ci
from sglang.test.scripted_runtime.http_server import ScriptedHttpServer
from sglang.test.scripted_runtime.io_struct import (
HookReady,
RunScript,
ScriptFailed,
ScriptSucceeded,
)
from sglang.test.test_utils import CustomTestCase
register_cpu_ci(est_time=15, suite="base-a-test-cpu")
def _sample_script(ctx, *args):
yield
_EXPECTED_FN_PATH = f"{_sample_script.__module__}:{_sample_script.__qualname__}"
class _FakePairSocket:
def __init__(self, *, poll_result: bool, reply: object = None) -> None:
self._poll_result = poll_result
self._reply = reply
self.sent: list = []
def send_pyobj(self, obj: object) -> None:
self.sent.append(obj)
def poll(self, timeout_ms: int) -> bool:
return self._poll_result
def recv_pyobj(self) -> object:
return self._reply
class _FakeProcess:
def __init__(self, *, alive: bool) -> None:
self._alive = alive
def is_alive(self) -> bool:
return self._alive
def _make_server(socket: _FakePairSocket, process: _FakeProcess) -> ScriptedHttpServer:
server = ScriptedHttpServer.__new__(ScriptedHttpServer)
server._socket = socket
server._server_process = process
server._dirty = None
return server
class TestExecuteScriptReplyMatching(CustomTestCase):
def test_returns_on_script_succeeded(self):
socket = _FakePairSocket(poll_result=True, reply=ScriptSucceeded())
server = _make_server(socket, _FakeProcess(alive=True))
server.execute_script(_sample_script)
self.assertEqual(socket.sent, [RunScript(fn_path=_EXPECTED_FN_PATH, args=())])
def test_forwards_args_in_run_script(self):
socket = _FakePairSocket(poll_result=True, reply=ScriptSucceeded())
server = _make_server(socket, _FakeProcess(alive=True))
server.execute_script(_sample_script, args=(1, "two"))
self.assertEqual(
socket.sent, [RunScript(fn_path=_EXPECTED_FN_PATH, args=(1, "two"))]
)
def test_script_failed_reply_raises_assertion_with_traceback(self):
socket = _FakePairSocket(
poll_result=True, reply=ScriptFailed(traceback="REMOTE-TB-MARKER")
)
server = _make_server(socket, _FakeProcess(alive=True))
with self.assertRaisesRegex(AssertionError, "REMOTE-TB-MARKER"):
server.execute_script(_sample_script)
def test_unexpected_reply_raises_runtime_error(self):
socket = _FakePairSocket(poll_result=True, reply=HookReady())
server = _make_server(socket, _FakeProcess(alive=True))
with self.assertRaisesRegex(RuntimeError, "unexpected message"):
server.execute_script(_sample_script)
class TestExecuteScriptNoReply(CustomTestCase):
def test_timeout_when_process_still_alive(self):
socket = _FakePairSocket(poll_result=False)
server = _make_server(socket, _FakeProcess(alive=True))
with self.assertRaisesRegex(TimeoutError, "timed out"):
server.execute_script(_sample_script, timeout_s=0.01)
self.assertIn("timed out", server._dirty)
def test_runtime_error_when_process_died(self):
socket = _FakePairSocket(poll_result=False)
server = _make_server(socket, _FakeProcess(alive=False))
with self.assertRaisesRegex(RuntimeError, "died before responding"):
server.execute_script(_sample_script, timeout_s=0.01)
self.assertIn("died before responding", server._dirty)
class TestExecuteScriptDirtyGuard(CustomTestCase):
def test_refuses_to_run_when_already_dirty(self):
socket = _FakePairSocket(poll_result=True, reply=ScriptSucceeded())
server = _make_server(socket, _FakeProcess(alive=True))
server._dirty = "prior timeout"
with self.assertRaisesRegex(RuntimeError, "dirty"):
server.execute_script(_sample_script)
self.assertEqual(socket.sent, [])
if __name__ == "__main__":
unittest.main()