Files
pku-xht c2fb21d13a Merge commit 'ead58a4a476200de2a2f2549ef6a02e73752b618' into codex/dsh-sdk-dynamic-subagent-routing
# Conflicts:
#	.agents/notes/implemented/feature/2026-07-27-typescript-sdk-and-sdk-subagent-backend.i18n.yaml
#	.agents/notes/implemented/feature/2026-07-27-typescript-sdk-and-sdk-subagent-backend.md
#	.agents/notes/implemented/feature/2026-07-27-typescript-sdk-and-sdk-subagent-backend.zh.md
#	examples/python-sdk-agent/tests/sdk.snapshot.ts
#	packages/sdk/client/README.i18n.yaml
#	packages/sdk/client/README.md
#	packages/sdk/client/README.zh.md
#	packages/sdk/client/src/types.ts
#	packages/sdk/protocol/README.i18n.yaml
#	packages/sdk/protocol/README.md
#	packages/sdk/protocol/README.zh.md
#	packages/sdk/server/src/server.ts
#	packages/subagent/subagent-dsh-sdk/tests/fixtures/loader/snapshot.cordis.yml
#	packages/subagent/subagent-dsh-sdk/tests/fixtures/loader/snapshot.replay.cordis.yml
2026-08-25 18:01:08 +08:00

1074 lines
44 KiB
Python

from __future__ import annotations
import json
import inspect
import sys
import threading
import time
from pathlib import Path
import pytest
from deepseek_harness import DeepSeekHarness, HarnessClient, HarnessConfig, Notification, RunResult, SdkProtocolError
from deepseek_harness.errors import JsonRpcError
def test_high_level_sdk_runs_turn_and_collects_final_response(tmp_path: Path) -> None:
script = tmp_path / "fake_runtime.py"
env_dump = tmp_path / "env.json"
init_dump = tmp_path / "init.json"
script.write_text(
"""
import json
import os
import sys
env_dump = os.environ["ENV_DUMP"]
json.dump({
"DEEPSEEK_API_KEY": os.environ.get("DEEPSEEK_API_KEY"),
"DEEPSEEK_BASE_URL": os.environ.get("DEEPSEEK_BASE_URL"),
"DSH_CWD": os.environ.get("DSH_CWD"),
"DSH_SESSION_ROOT": os.environ.get("DSH_SESSION_ROOT"),
"DSH_CORDIS_CONFIG": os.environ.get("DSH_CORDIS_CONFIG"),
}, open(env_dump, "w"))
for line in sys.stdin:
msg = json.loads(line)
method = msg.get("method")
if method == "initialize":
json.dump(msg.get("params"), open(os.environ["INIT_DUMP"], "w"))
print(json.dumps({"jsonrpc": "2.0", "id": msg["id"], "result": {"serverInfo": {"name": "fake-runtime"}}}), flush=True)
elif method == "session/prompt":
params = msg.get("params") or {}
print(json.dumps({"jsonrpc": "2.0", "method": "session.event", "params": {"sessionId": params["sessionId"], "event": {"type": "agent/inbox/spliced", "data": {"target": "next-turn", "start": 0, "inserted": [{"id": "message-1"}]}}}}), flush=True)
print(json.dumps({"jsonrpc": "2.0", "method": "session.status", "params": {"sessionId": params["sessionId"], "status": "running"}}), flush=True)
print(json.dumps({"jsonrpc": "2.0", "id": msg["id"], "result": {"messageId": "message-1"}}), flush=True)
print(json.dumps({
"jsonrpc": "2.0",
"method": "session.event",
"params": {
"sessionId": params["sessionId"],
"event": {
"type": "assistant/message",
"data": {
"message": {
"role": "assistant",
"content": [{"type": "text", "text": "hello from runtime"}],
},
},
},
},
}), flush=True)
print(json.dumps({
"jsonrpc": "2.0",
"method": "session.event",
"params": {
"sessionId": params["sessionId"],
"event": {
"type": "turn/end",
"data": {"turn": 1, "reason": {"kind": "completed"}},
},
},
}), flush=True)
print(json.dumps({
"jsonrpc": "2.0",
"method": "session.event",
"params": {
"sessionId": params["sessionId"],
"event": {
"type": "turn/end",
"data": {"turn": 2, "reason": {"kind": "max-tokens"}},
},
},
}), flush=True)
print(json.dumps({
"jsonrpc": "2.0",
"method": "session.status",
"params": {"sessionId": params["sessionId"], "status": "idle"},
}), flush=True)
elif method == "shutdown":
print(json.dumps({"jsonrpc": "2.0", "id": msg["id"], "result": {}}), flush=True)
break
""".strip()
)
with DeepSeekHarness(
model="deepseek-v4-flash",
reasoning_effort="max",
max_tokens=4096,
cwd=str(tmp_path),
_launch_args=(sys.executable, str(script)),
env={
"ENV_DUMP": str(env_dump),
"INIT_DUMP": str(init_dump),
"DEEPSEEK_API_KEY": "env-key",
"DEEPSEEK_BASE_URL": "http://127.0.0.1:4321",
},
) as harness:
result = harness.run("say hello", session_id="main")
assert result.final_response == "hello from runtime"
assert result.finish_reason == "max-tokens"
assert result.events[-1]["type"] == "turn/end"
dumped_env = json.loads(env_dump.read_text())
assert dumped_env["DEEPSEEK_API_KEY"] == "env-key"
assert dumped_env["DEEPSEEK_BASE_URL"] == "http://127.0.0.1:4321"
assert dumped_env["DSH_CWD"] is None
assert dumped_env["DSH_SESSION_ROOT"] is None
assert dumped_env["DSH_CORDIS_CONFIG"] is None
assert json.loads(init_dump.read_text()) == {
"cwd": str(tmp_path),
"provider": "deepseek-official",
"model": "deepseek-v4-flash",
"reasoningEffort": "max",
"maxTokens": 4096,
}
def test_session_run_invokes_notification_callback_before_returning(tmp_path: Path) -> None:
script = tmp_path / "fake_runtime.py"
script.write_text(
"""
import json
import sys
for line in sys.stdin:
msg = json.loads(line)
method = msg.get("method")
if method == "initialize":
print(json.dumps({"jsonrpc": "2.0", "id": msg["id"], "result": {"serverInfo": {"name": "fake-runtime"}}}), flush=True)
elif method == "session/prompt":
print(json.dumps({"jsonrpc": "2.0", "method": "session.event", "params": {"sessionId": "main", "event": {"type": "agent/inbox/spliced", "data": {"target": "next-turn", "start": 0, "inserted": [{"id": "message-1"}]}}}}), flush=True)
print(json.dumps({"jsonrpc": "2.0", "method": "session.status", "params": {"sessionId": "main", "status": "running"}}), flush=True)
print(json.dumps({"jsonrpc": "2.0", "id": msg["id"], "result": {"messageId": "message-1"}}), flush=True)
print(json.dumps({"jsonrpc": "2.0", "method": "subagent.started", "params": {"parentSessionId": "main", "childSessionId": "child"}}), flush=True)
print(json.dumps({"jsonrpc": "2.0", "method": "session.status", "params": {"sessionId": "main", "status": "idle"}}), flush=True)
elif method == "shutdown":
print(json.dumps({"jsonrpc": "2.0", "id": msg["id"], "result": {}}), flush=True)
break
""".strip()
)
seen: list[str] = []
with DeepSeekHarness(
_launch_args=(sys.executable, str(script)),
cwd=str(tmp_path),
) as harness:
session = harness.start_session("main")
result = session.run(
"spawn a helper",
on_notification=lambda notification: seen.append(notification.method),
)
assert seen == ["session.event", "session.status", "subagent.started", "session.status"]
assert result.finish_reason is None
def test_high_level_sdk_rejects_turn_end_without_reason_kind(tmp_path: Path) -> None:
script = tmp_path / "fake_runtime.py"
script.write_text(
"""
import json
import sys
for line in sys.stdin:
msg = json.loads(line)
method = msg.get("method")
if method == "initialize":
print(json.dumps({"jsonrpc": "2.0", "id": msg["id"], "result": {"serverInfo": {"name": "fake-runtime"}}}), flush=True)
elif method == "session/prompt":
params = msg.get("params") or {}
print(json.dumps({"jsonrpc": "2.0", "method": "session.event", "params": {"sessionId": params["sessionId"], "event": {"type": "agent/inbox/spliced", "data": {"target": "next-turn", "start": 0, "inserted": [{"id": "message-1"}]}}}}), flush=True)
print(json.dumps({"jsonrpc": "2.0", "id": msg["id"], "result": {"messageId": "message-1"}}), flush=True)
print(json.dumps({"jsonrpc": "2.0", "method": "session.event", "params": {"sessionId": params["sessionId"], "event": {"type": "turn/end", "data": {"turn": 1, "reason": {}}}}}), flush=True)
print(json.dumps({"jsonrpc": "2.0", "method": "session.status", "params": {"sessionId": params["sessionId"], "status": "idle"}}), flush=True)
elif method == "shutdown":
print(json.dumps({"jsonrpc": "2.0", "id": msg["id"], "result": {}}), flush=True)
break
""".strip()
)
with DeepSeekHarness(
_launch_args=(sys.executable, str(script)),
cwd=str(tmp_path),
) as harness:
with pytest.raises(
SdkProtocolError,
match=r"turn/end event requires a string data\.reason\.kind",
):
harness.run("reject malformed turn ending", session_id="main")
def test_relative_cwd_is_absolute_in_process_environment_and_wire(
tmp_path: Path, monkeypatch: pytest.MonkeyPatch
) -> None:
script = tmp_path / "capture_cwd.py"
capture = tmp_path / "cwd.json"
script.write_text(
"""
import json
import os
import sys
for line in sys.stdin:
msg = json.loads(line)
if msg.get("method") == "initialize":
json.dump({"process": os.getcwd(), "environment": os.environ.get("DSH_CWD"), "wire": msg["params"]["cwd"]}, open(os.environ["CAPTURE"], "w"))
print(json.dumps({"jsonrpc": "2.0", "id": msg["id"], "result": {"serverInfo": {"name": "fake-runtime"}}}), flush=True)
elif msg.get("method") == "shutdown":
print(json.dumps({"jsonrpc": "2.0", "id": msg["id"], "result": {}}), flush=True)
break
""".strip()
)
monkeypatch.chdir(tmp_path)
with DeepSeekHarness(
cwd=".",
runtime_cwd=".",
_launch_args=(sys.executable, str(script)),
env={"CAPTURE": str(capture)},
):
pass
expected = str(tmp_path.resolve())
assert json.loads(capture.read_text()) == {
"process": expected,
"environment": None,
"wire": expected,
}
def test_session_run_includes_subagent_finished_for_parent_session(tmp_path: Path) -> None:
script = tmp_path / "fake_runtime.py"
script.write_text(
"""
import json
import sys
for line in sys.stdin:
msg = json.loads(line)
method = msg.get("method")
if method == "initialize":
print(json.dumps({"jsonrpc": "2.0", "id": msg["id"], "result": {"serverInfo": {"name": "fake-runtime"}}}), flush=True)
elif method == "session/prompt":
print(json.dumps({"jsonrpc": "2.0", "method": "session.event", "params": {"sessionId": "main", "event": {"type": "agent/inbox/spliced", "data": {"target": "next-turn", "start": 0, "inserted": [{"id": "message-1"}]}}}}), flush=True)
print(json.dumps({"jsonrpc": "2.0", "method": "session.status", "params": {"sessionId": "main", "status": "running"}}), flush=True)
print(json.dumps({"jsonrpc": "2.0", "id": msg["id"], "result": {"messageId": "message-1"}}), flush=True)
print(json.dumps({"jsonrpc": "2.0", "method": "subagent.started", "params": {"parentSessionId": "main", "childSessionId": "child"}}), flush=True)
print(json.dumps({"jsonrpc": "2.0", "method": "subagent.finished", "params": {"parentSessionId": "main", "childSessionId": "child", "status": "ok", "stopReason": "completed"}}), flush=True)
print(json.dumps({"jsonrpc": "2.0", "method": "session.status", "params": {"sessionId": "main", "status": "idle"}}), flush=True)
elif method == "shutdown":
print(json.dumps({"jsonrpc": "2.0", "id": msg["id"], "result": {}}), flush=True)
break
""".strip()
)
with DeepSeekHarness(
_launch_args=(sys.executable, str(script)),
cwd=str(tmp_path),
) as harness:
result = harness.run("spawn a helper", session_id="main")
assert [notification.method for notification in result.notifications] == [
"session.event",
"session.status",
"subagent.started",
"subagent.finished",
"session.status",
]
def test_session_run_collects_nested_subagent_tree_without_polluting_root_events(
tmp_path: Path,
) -> None:
script = tmp_path / "fake_runtime.py"
script.write_text(
"""
import json
import sys
for line in sys.stdin:
msg = json.loads(line)
method = msg.get("method")
if method == "initialize":
print(json.dumps({"jsonrpc": "2.0", "id": msg["id"], "result": {"serverInfo": {"name": "fake-runtime"}}}), flush=True)
elif method == "session/prompt":
root = (msg.get("params") or {})["sessionId"]
print(json.dumps({"jsonrpc": "2.0", "method": "session.event", "params": {"sessionId": root, "event": {"type": "agent/inbox/spliced", "data": {"target": "next-turn", "start": 0, "inserted": [{"id": "message-1"}]}}}}), flush=True)
print(json.dumps({"jsonrpc": "2.0", "method": "session.status", "params": {"sessionId": root, "status": "running"}}), flush=True)
print(json.dumps({"jsonrpc": "2.0", "id": msg["id"], "result": {"messageId": "message-1"}}), flush=True)
print(json.dumps({"jsonrpc": "2.0", "method": "subagent.started", "params": {"parentSessionId": root, "childSessionId": "child"}}), flush=True)
print(json.dumps({"jsonrpc": "2.0", "method": "session.event", "params": {"sessionId": "child", "event": {"type": "assistant/message", "data": {"content": [{"type": "text", "text": "child response"}]}}}}), flush=True)
print(json.dumps({"jsonrpc": "2.0", "method": "subagent.started", "params": {"parentSessionId": "child", "childSessionId": "grandchild"}}), flush=True)
print(json.dumps({"jsonrpc": "2.0", "method": "session.event", "params": {"sessionId": "grandchild", "event": {"type": "assistant/message", "data": {"content": [{"type": "text", "text": "grandchild response"}]}}}}), flush=True)
print(json.dumps({"jsonrpc": "2.0", "method": "subagent.finished", "params": {"parentSessionId": "child", "childSessionId": "grandchild", "status": "ok"}}), flush=True)
print(json.dumps({"jsonrpc": "2.0", "method": "subagent.finished", "params": {"parentSessionId": root, "childSessionId": "child", "status": "ok"}}), flush=True)
print(json.dumps({"jsonrpc": "2.0", "method": "session.event", "params": {"sessionId": root, "event": {"type": "assistant/message", "data": {"content": [{"type": "text", "text": "root response"}]}}}}), flush=True)
print(json.dumps({"jsonrpc": "2.0", "method": "session.status", "params": {"sessionId": root, "status": "idle"}}), flush=True)
elif method == "shutdown":
print(json.dumps({"jsonrpc": "2.0", "id": msg["id"], "result": {}}), flush=True)
break
""".strip()
)
seen: list[str] = []
with DeepSeekHarness(
_launch_args=(sys.executable, str(script)),
cwd=str(tmp_path),
) as harness:
result = harness.run(
"delegate recursively",
session_id="main",
on_notification=lambda notification: seen.append(notification.method),
)
assert harness.client._notifications.qsize() == 0
assert result.final_response == "root response"
assert [event["data"]["content"][0]["text"] for event in result.events if event["type"] == "assistant/message"] == ["root response"]
assert [notification.method for notification in result.notifications] == [
"session.event",
"session.status",
"subagent.started",
"session.event",
"subagent.started",
"session.event",
"subagent.finished",
"subagent.finished",
"session.event",
"session.status",
]
assert seen == [notification.method for notification in result.notifications]
def test_session_run_ignores_notifications_for_other_sessions(tmp_path: Path) -> None:
script = tmp_path / "fake_runtime.py"
script.write_text(
"""
import json
import sys
for line in sys.stdin:
msg = json.loads(line)
method = msg.get("method")
if method == "initialize":
print(json.dumps({"jsonrpc": "2.0", "id": msg["id"], "result": {"serverInfo": {"name": "fake-runtime"}}}), flush=True)
elif method == "session/prompt":
params = msg.get("params") or {}
print(json.dumps({"jsonrpc": "2.0", "method": "session.event", "params": {"sessionId": "other", "event": {"type": "assistant/message", "data": {"content": [{"type": "text", "text": "wrong session"}]}}}}), flush=True)
print(json.dumps({"jsonrpc": "2.0", "method": "session.status", "params": {"sessionId": "other", "status": "idle"}}), flush=True)
print(json.dumps({"jsonrpc": "2.0", "method": "session.event", "params": {"sessionId": params["sessionId"], "event": {"type": "agent/inbox/spliced", "data": {"target": "next-turn", "start": 0, "inserted": [{"id": "message-1"}]}}}}), flush=True)
print(json.dumps({"jsonrpc": "2.0", "method": "session.status", "params": {"sessionId": params["sessionId"], "status": "running"}}), flush=True)
print(json.dumps({"jsonrpc": "2.0", "id": msg["id"], "result": {"messageId": "message-1"}}), flush=True)
print(json.dumps({"jsonrpc": "2.0", "method": "session.event", "params": {"sessionId": params["sessionId"], "event": {"type": "assistant/message", "data": {"content": [{"type": "text", "text": "right session"}]}}}}), flush=True)
print(json.dumps({"jsonrpc": "2.0", "method": "session.status", "params": {"sessionId": params["sessionId"], "status": "idle"}}), flush=True)
elif method == "shutdown":
print(json.dumps({"jsonrpc": "2.0", "id": msg["id"], "result": {}}), flush=True)
break
""".strip()
)
with DeepSeekHarness(
_launch_args=(sys.executable, str(script)),
cwd=str(tmp_path),
) as harness:
result = harness.run("stay in your lane", session_id="main")
assert result.final_response == "right session"
assert [notification.payload.get("sessionId") for notification in result.notifications] == ["main"] * 4
def test_high_level_session_run_does_not_accumulate_global_notifications(tmp_path: Path) -> None:
script = tmp_path / "fake_runtime.py"
script.write_text(
"""
import json
import sys
for line in sys.stdin:
msg = json.loads(line)
method = msg.get("method")
if method == "initialize":
print(json.dumps({"jsonrpc": "2.0", "id": msg["id"], "result": {"serverInfo": {"name": "fake-runtime"}}}), flush=True)
elif method == "session/prompt":
params = msg.get("params") or {}
print(json.dumps({"jsonrpc": "2.0", "method": "session.event", "params": {"sessionId": params["sessionId"], "event": {"type": "agent/inbox/spliced", "data": {"target": "next-turn", "start": 0, "inserted": [{"id": "message-1"}]}}}}), flush=True)
print(json.dumps({"jsonrpc": "2.0", "method": "session.status", "params": {"sessionId": params["sessionId"], "status": "running"}}), flush=True)
print(json.dumps({"jsonrpc": "2.0", "id": msg["id"], "result": {"messageId": "message-1"}}), flush=True)
print(json.dumps({"jsonrpc": "2.0", "method": "session.event", "params": {"sessionId": params["sessionId"], "event": {"type": "assistant/message", "data": {"content": [{"type": "text", "text": "ok"}]}}}}), flush=True)
print(json.dumps({"jsonrpc": "2.0", "method": "session.status", "params": {"sessionId": params["sessionId"], "status": "idle"}}), flush=True)
elif method == "shutdown":
print(json.dumps({"jsonrpc": "2.0", "id": msg["id"], "result": {}}), flush=True)
break
""".strip()
)
with DeepSeekHarness(_launch_args=(sys.executable, str(script)), cwd=str(tmp_path)) as harness:
result = harness.run("one turn", session_id="main")
assert harness.client._notifications.qsize() == 0
def test_session_run_waits_for_late_idle_without_replaying_stale_notifications(tmp_path: Path) -> None:
script = tmp_path / "fake_runtime.py"
script.write_text(
"""
import json
import sys
import time
turn = 0
for line in sys.stdin:
msg = json.loads(line)
method = msg.get("method")
if method == "initialize":
print(json.dumps({"jsonrpc": "2.0", "id": msg["id"], "result": {"serverInfo": {"name": "fake-runtime"}}}), flush=True)
elif method == "session/prompt":
turn += 1
params = msg.get("params") or {}
session_id = params["sessionId"]
message_id = f"message-{turn}"
print(json.dumps({"jsonrpc": "2.0", "method": "session.event", "params": {"sessionId": session_id, "event": {"type": "agent/inbox/spliced", "data": {"target": "next-turn", "start": 0, "inserted": [{"id": message_id}]}}}}), flush=True)
print(json.dumps({"jsonrpc": "2.0", "method": "session.status", "params": {"sessionId": session_id, "status": "running"}}), flush=True)
print(json.dumps({"jsonrpc": "2.0", "id": msg["id"], "result": {"messageId": message_id}}), flush=True)
if turn == 1:
print(json.dumps({"jsonrpc": "2.0", "method": "session.event", "params": {"sessionId": session_id, "event": {"type": "assistant/message", "data": {"content": [{"type": "text", "text": "first"}]}}}}), flush=True)
print(json.dumps({"jsonrpc": "2.0", "method": "session.status", "params": {"sessionId": session_id, "status": "idle"}}), flush=True)
else:
time.sleep(0.05)
print(json.dumps({"jsonrpc": "2.0", "method": "session.event", "params": {"sessionId": session_id, "event": {"type": "assistant/message", "data": {"content": [{"type": "text", "text": "second"}]}}}}), flush=True)
print(json.dumps({"jsonrpc": "2.0", "method": "session.status", "params": {"sessionId": session_id, "status": "idle"}}), flush=True)
elif method == "shutdown":
print(json.dumps({"jsonrpc": "2.0", "id": msg["id"], "result": {}}), flush=True)
break
""".strip()
)
with DeepSeekHarness(_launch_args=(sys.executable, str(script)), cwd=str(tmp_path)) as harness:
first = harness.run("first turn", session_id="main")
second = harness.run("second turn", session_id="main")
assert first.final_response == "first"
assert second.final_response == "second"
assert [notification.payload.get("sessionId") for notification in second.notifications] == ["main"] * 4
def test_client_starts_subprocess_sends_requests_and_routes_notifications(tmp_path: Path) -> None:
script = tmp_path / "fake_bridge.py"
script.write_text(
"""
import json
import sys
for line in sys.stdin:
msg = json.loads(line)
method = msg.get("method")
if method == "initialize":
print(json.dumps({"jsonrpc": "2.0", "id": msg["id"], "result": {"serverInfo": {"name": "fake-dsh"}}}), flush=True)
elif method == "session/prompt":
params = msg.get("params") or {}
print(json.dumps({"jsonrpc": "2.0", "method": "llm/request", "params": {"requestId": "req-1", "sessionId": params["sessionId"], "model": "dsagent", "messages": []}}), flush=True)
print(json.dumps({"jsonrpc": "2.0", "id": msg["id"], "result": {"messageId": "message-1"}}), flush=True)
elif method == "shutdown":
print(json.dumps({"jsonrpc": "2.0", "id": msg["id"], "result": {}}), flush=True)
break
""".strip()
)
with HarnessClient(_launch_args=(sys.executable, str(script))) as client:
init = client.initialize(provider="deepseek-official", cwd="/workspace", model="dsagent")
assert init.serverInfo.name == "fake-dsh"
client.session_prompt("main", [{"type": "text", "text": "fix it"}])
notification = client.next_notification()
assert notification.method == "llm/request"
assert notification.payload["requestId"] == "req-1"
assert notification.payload["sessionId"] == "main"
def test_client_keeps_unmatched_notifications_available_globally_while_subscribed() -> None:
client = HarnessClient()
with client.subscribe_session_notifications("main"):
client._handle_message({
"jsonrpc": "2.0",
"method": "session.event",
"params": {"sessionId": "other", "event": {"type": "assistant/message"}},
})
assert client._notifications.qsize() == 1
notification = client._notifications.get_nowait()
assert not isinstance(notification, BaseException)
assert notification.method == "session.event"
assert notification.payload["sessionId"] == "other"
def test_session_subscription_keeps_descendant_relationships_across_subscriptions() -> None:
client = HarnessClient()
with client.subscribe_session_notifications("main") as first:
client._handle_message({
"jsonrpc": "2.0",
"method": "subagent.started",
"params": {"parentSessionId": "main", "childSessionId": "child"},
})
assert first.next().payload["childSessionId"] == "child"
with client.subscribe_session_notifications("main") as second:
client._handle_message({
"jsonrpc": "2.0",
"method": "subagent.started",
"params": {"parentSessionId": "child", "childSessionId": "grandchild"},
})
client._handle_message({
"jsonrpc": "2.0",
"method": "session.event",
"params": {"sessionId": "grandchild", "event": {"type": "assistant/message"}},
})
assert second.next().payload["childSessionId"] == "grandchild"
assert second.next().payload["sessionId"] == "grandchild"
assert client._notifications.qsize() == 0
def test_session_subscription_preserves_reused_child_ancestry_after_late_finish() -> None:
client = HarnessClient()
old_seen: list[Notification] = []
new_seen: list[Notification] = []
with (
client.subscribe_session_notifications("old-parent") as old_subscription,
client.subscribe_session_notifications("new-parent") as new_subscription,
):
client._handle_message({
"jsonrpc": "2.0",
"method": "subagent.started",
"params": {"parentSessionId": "old-parent", "childSessionId": "reused-child"},
})
old_subscription.drain(old_seen.append)
new_subscription.drain(new_seen.append)
assert [notification.method for notification in old_seen] == ["subagent.started"]
assert new_seen == []
client._handle_message({
"jsonrpc": "2.0",
"method": "subagent.started",
"params": {"parentSessionId": "new-parent", "childSessionId": "reused-child"},
})
old_subscription.drain(old_seen.append)
new_subscription.drain(new_seen.append)
assert [notification.method for notification in new_seen] == ["subagent.started"]
client._handle_message({
"jsonrpc": "2.0",
"method": "subagent.finished",
"params": {"parentSessionId": "old-parent", "childSessionId": "reused-child"},
})
old_subscription.drain(old_seen.append)
new_subscription.drain(new_seen.append)
assert [notification.method for notification in old_seen] == [
"subagent.started",
"subagent.finished",
]
assert [notification.method for notification in new_seen] == ["subagent.started"]
client._handle_message({
"jsonrpc": "2.0",
"method": "session.event",
"params": {"sessionId": "reused-child", "event": {"type": "assistant/message"}},
})
old_subscription.drain(old_seen.append)
new_subscription.drain(new_seen.append)
assert [notification.method for notification in old_seen] == [
"subagent.started",
"subagent.finished",
]
assert [notification.method for notification in new_seen] == [
"subagent.started",
"session.event",
]
assert client._notifications.qsize() == 0
def test_client_contains_notification_filter_failure_to_its_subscription(tmp_path: Path) -> None:
script = tmp_path / "fake_bridge.py"
script.write_text(
"""
import json
import sys
for line in sys.stdin:
msg = json.loads(line)
method = msg.get("method")
if method == "initialize":
print(json.dumps({"jsonrpc": "2.0", "id": msg["id"], "result": {"serverInfo": {"name": "fake-dsh"}}}), flush=True)
elif method in {"emit-first", "emit-second"}:
print(json.dumps({"jsonrpc": "2.0", "method": "tick", "params": {"source": method}}), flush=True)
elif method == "session/prompt":
print(json.dumps({"jsonrpc": "2.0", "id": msg["id"], "result": {"messageId": "message-1"}}), flush=True)
elif method == "shutdown":
print(json.dumps({"jsonrpc": "2.0", "id": msg["id"], "result": {}}), flush=True)
break
""".strip()
)
def broken_filter(_notification: object) -> bool:
raise RuntimeError("bad notification filter")
with HarnessClient(_launch_args=(sys.executable, str(script))) as client:
client.initialize(provider="deepseek-official", cwd="/workspace", model="dsagent")
with (
client.subscribe_notifications(broken_filter) as broken,
client.subscribe_notifications(lambda notification: notification.method == "tick") as healthy,
):
client.notify("emit-first")
with pytest.raises(RuntimeError, match="bad notification filter"):
broken.next()
assert healthy.next().payload == {"source": "emit-first"}
assert client._notifications.qsize() == 0
client.session_prompt("main", [{"type": "text", "text": "reader still works"}])
client.notify("emit-second")
assert healthy.next().payload == {"source": "emit-second"}
def test_client_rejects_unaccepted_session_prompt_response(tmp_path: Path) -> None:
script = tmp_path / "fake_bridge.py"
script.write_text(
"""
import json
import sys
for line in sys.stdin:
msg = json.loads(line)
method = msg.get("method")
if method == "initialize":
print(json.dumps({"jsonrpc": "2.0", "id": msg["id"], "result": {"serverInfo": {"name": "fake-dsh"}}}), flush=True)
elif method == "session/prompt":
print(json.dumps({"jsonrpc": "2.0", "id": msg["id"], "result": {"accepted": False}}), flush=True)
elif method == "shutdown":
print(json.dumps({"jsonrpc": "2.0", "id": msg["id"], "result": {}}), flush=True)
break
""".strip()
)
with HarnessClient(_launch_args=(sys.executable, str(script))) as client:
client.initialize(provider="deepseek-official", cwd="/workspace", model="dsagent")
with pytest.raises(ValueError):
client.session_prompt("main", [{"type": "text", "text": "fix it"}])
def test_client_routes_bridge_requests_and_sends_responses(tmp_path: Path) -> None:
script = tmp_path / "fake_bridge.py"
script.write_text(
"""
import json
import sys
for line in sys.stdin:
msg = json.loads(line)
method = msg.get("method")
if method == "initialize":
print(json.dumps({"jsonrpc": "2.0", "id": msg["id"], "result": {"serverInfo": {"name": "fake-dsh"}}}), flush=True)
print(json.dumps({"jsonrpc": "2.0", "id": "bridge-req-1", "method": "llm.request", "params": {"requestId": "req-1", "sessionId": "main", "model": "dsagent", "messages": []}}), flush=True)
elif "id" in msg and "method" not in msg:
print(json.dumps({"jsonrpc": "2.0", "method": "response/seen", "params": {"result": msg.get("result")}}), flush=True)
elif method == "shutdown":
print(json.dumps({"jsonrpc": "2.0", "id": msg["id"], "result": {}}), flush=True)
break
""".strip()
)
with HarnessClient(_launch_args=(sys.executable, str(script))) as client:
client.initialize(provider="deepseek-official", cwd="/workspace", model="dsagent")
request = client.next_request()
assert request.id == "bridge-req-1"
assert request.method == "llm.request"
assert request.payload["requestId"] == "req-1"
client.respond(request.id, {"content_blocks": [{"type": "text", "text": "done"}]})
notification = client.next_notification()
assert notification.method == "response/seen"
assert notification.payload["result"]["content_blocks"][0]["text"] == "done"
def test_client_ignores_non_json_stdout_lines(tmp_path: Path) -> None:
script = tmp_path / "fake_bridge.py"
script.write_text(
"""
import json
import sys
print("node warning: experimental loader", flush=True)
for line in sys.stdin:
msg = json.loads(line)
if msg.get("method") == "initialize":
print(json.dumps({"jsonrpc": "2.0", "id": msg["id"], "result": {"serverInfo": {"name": "fake-dsh"}}}), flush=True)
elif msg.get("method") == "shutdown":
print(json.dumps({"jsonrpc": "2.0", "id": msg["id"], "result": {}}), flush=True)
break
""".strip()
)
with HarnessClient(_launch_args=(sys.executable, str(script))) as client:
init = client.initialize(provider="deepseek-official", cwd="/workspace", model="dsagent")
assert init.serverInfo.name == "fake-dsh"
def test_client_request_times_out_when_bridge_does_not_respond(tmp_path: Path) -> None:
script = tmp_path / "fake_bridge.py"
script.write_text(
"""
import sys
import time
print("bridge is still starting", file=sys.stderr, flush=True)
time.sleep(60)
""".strip()
)
with HarnessClient(
HarnessConfig(
profile="web",
initialize_timeout_seconds=0.1,
),
_launch_args=(sys.executable, str(script)),
) as client:
start = time.monotonic()
try:
client.initialize(provider="deepseek-official", cwd="/workspace", model="dsagent")
except TimeoutError as exc:
assert time.monotonic() - start < 2
assert "bridge is still starting" in str(exc)
assert "profile 'web'" in str(exc)
else:
raise AssertionError("initialize should time out")
def test_client_close_times_out_when_shutdown_does_not_respond(tmp_path: Path) -> None:
script = tmp_path / "fake_bridge.py"
script.write_text(
"""
import json
import signal
import sys
import time
signal.signal(signal.SIGTERM, signal.SIG_IGN)
for line in sys.stdin:
msg = json.loads(line)
if msg.get("method") == "initialize":
print(json.dumps({"jsonrpc": "2.0", "id": msg["id"], "result": {"serverInfo": {"name": "fake-dsh"}}}), flush=True)
elif msg.get("method") == "shutdown":
time.sleep(60)
""".strip()
)
client = HarnessClient(
HarnessConfig(
shutdown_timeout_seconds=0.1,
),
_launch_args=(sys.executable, str(script)),
)
client.start()
proc = client._proc
assert proc is not None
client.initialize(provider="deepseek-official", cwd="/workspace", model="dsagent")
start = time.monotonic()
client.close()
assert time.monotonic() - start < 2
assert proc.poll() is not None
assert client._proc is None
def test_client_close_allows_eof_quiescence_after_shutdown_response(tmp_path: Path) -> None:
script = tmp_path / "fake_runtime.py"
marker = tmp_path / "quiesced.txt"
script.write_text(
"""
import json
import os
from pathlib import Path
import sys
import time
for line in sys.stdin:
msg = json.loads(line)
if msg.get("method") == "initialize":
print(json.dumps({"jsonrpc": "2.0", "id": msg["id"], "result": {"serverInfo": {"name": "fake-dsh"}}}), flush=True)
elif msg.get("method") == "shutdown":
print(json.dumps({"jsonrpc": "2.0", "id": msg["id"], "result": {}}), flush=True)
time.sleep(0.05)
Path(os.environ["QUIESCED_MARKER"]).write_text("quiesced")
""".strip()
)
client = HarnessClient(
HarnessConfig(
env={"QUIESCED_MARKER": str(marker)},
shutdown_timeout_seconds=1,
),
_launch_args=(sys.executable, str(script)),
)
client.start()
client.initialize(provider="deepseek-official", cwd="/workspace", model="dsagent")
client.close()
assert marker.read_text() == "quiesced"
def test_initialize_failure_reaps_started_runtime(tmp_path: Path) -> None:
script = tmp_path / "rejecting_runtime.py"
script.write_text(
"""
import json
import sys
for line in sys.stdin:
msg = json.loads(line)
if msg.get("method") == "initialize":
print("initialize diagnostic", file=sys.stderr, flush=True)
print(json.dumps({"jsonrpc": "2.0", "id": msg["id"], "error": {"code": -32000, "message": "bad initialize"}}), flush=True)
elif msg.get("method") == "shutdown":
print(json.dumps({"jsonrpc": "2.0", "id": msg["id"], "result": {}}), flush=True)
break
""".strip()
)
client = HarnessClient(_launch_args=(sys.executable, str(script)))
client.start()
proc = client._proc
assert proc is not None
with pytest.raises(JsonRpcError, match="bad initialize") as excinfo:
client.initialize(provider="deepseek-official", cwd=".", model="dsagent")
assert excinfo.value.code == -32000
assert "initialize diagnostic" in str(excinfo.value)
assert proc.wait(timeout=1) is not None
assert client._proc is None
def test_public_signatures_omit_unsupported_wire_parameters() -> None:
from deepseek_harness import DeepSeekHarnessConfig, Session
assert "session_root" not in inspect.signature(HarnessClient.initialize).parameters
assert "system_prompt" not in inspect.signature(HarnessClient.initialize).parameters
assert "profile" not in inspect.signature(HarnessClient.session_prompt).parameters
assert "profile" not in inspect.signature(DeepSeekHarness.run).parameters
assert "profile" not in inspect.signature(Session.run).parameters
assert "system_prompt" not in DeepSeekHarnessConfig.__dataclass_fields__
assert "max_tokens" in DeepSeekHarnessConfig.__dataclass_fields__
assert "reasoning_effort" in DeepSeekHarnessConfig.__dataclass_fields__
assert "max_tokens" in inspect.signature(HarnessClient.initialize).parameters
assert "reasoning_effort" in inspect.signature(HarnessClient.initialize).parameters
assert "client_name" not in HarnessConfig.__dataclass_fields__
assert "client_version" not in HarnessConfig.__dataclass_fields__
assert {"dsh_bin", "profile", "patches", "dsh_home"} <= set(
DeepSeekHarnessConfig.__dataclass_fields__
)
assert {"dsh_bin", "profile", "patches", "dsh_home"} <= set(
HarnessConfig.__dataclass_fields__
)
assert "initialize_timeout_seconds" in DeepSeekHarnessConfig.__dataclass_fields__
assert "initialize_timeout_seconds" in HarnessConfig.__dataclass_fields__
assert DeepSeekHarnessConfig().initialize_timeout_seconds == 30.0
assert HarnessConfig().initialize_timeout_seconds == 30.0
for removed in ("cordis", "session_root", "runtime_bin", "bridge_bin", "launch_args_override"):
assert removed not in DeepSeekHarnessConfig.__dataclass_fields__
assert removed not in HarnessConfig.__dataclass_fields__
assert "_launch_args" not in HarnessConfig.__dataclass_fields__
assert "session_root" not in RunResult.__dataclass_fields__
def test_client_close_is_idempotent_before_and_after_start(tmp_path: Path) -> None:
HarnessClient().close()
script = tmp_path / "fake_bridge.py"
script.write_text(
"""
import json
import sys
for line in sys.stdin:
msg = json.loads(line)
if msg.get("method") == "initialize":
print(json.dumps({"jsonrpc": "2.0", "id": msg["id"], "result": {"serverInfo": {"name": "fake-dsh"}}}), flush=True)
elif msg.get("method") == "shutdown":
print(json.dumps({"jsonrpc": "2.0", "id": msg["id"], "result": {}}), flush=True)
break
""".strip()
)
client = HarnessClient(_launch_args=(sys.executable, str(script)))
client.start()
client.initialize(provider="deepseek-official", cwd="/workspace", model="dsagent")
client.close()
client.close()
def test_runtime_closed_error_includes_stderr_tail(tmp_path: Path) -> None:
script = tmp_path / "crashing_runtime.py"
script.write_text(
"""
import sys
print("fatal bridge exploded", file=sys.stderr, flush=True)
sys.exit(42)
""".strip()
)
with HarnessClient(
HarnessConfig(
request_timeout_seconds=2,
),
_launch_args=(sys.executable, str(script)),
) as client:
with pytest.raises(Exception, match="fatal bridge exploded"):
client.initialize(provider="deepseek-official", cwd="/workspace", model="dsagent")
def test_client_serializes_concurrent_writes(tmp_path: Path) -> None:
script = tmp_path / "fake_bridge.py"
output = tmp_path / "seen.jsonl"
script.write_text(
"""
import json
import os
import sys
with open(os.environ["SEEN"], "w") as seen:
for line in sys.stdin:
seen.write(line)
seen.flush()
msg = json.loads(line)
if "id" in msg and msg.get("method") == "initialize":
print(json.dumps({"jsonrpc": "2.0", "id": msg["id"], "result": {"serverInfo": {"name": "fake-dsh"}}}), flush=True)
elif "id" in msg and msg.get("method") == "shutdown":
print(json.dumps({"jsonrpc": "2.0", "id": msg["id"], "result": {}}), flush=True)
break
""".strip()
)
with HarnessClient(
HarnessConfig(
env={"SEEN": str(output)},
),
_launch_args=(sys.executable, str(script)),
) as client:
client.initialize(provider="deepseek-official", cwd="/workspace", model="dsagent")
threads = [
threading.Thread(target=client.notify, args=(f"notice-{index}", {"index": index}))
for index in range(50)
]
for thread in threads:
thread.start()
for thread in threads:
thread.join()
for line in output.read_text().splitlines():
json.loads(line)
def _install_fake_bundled_dsh(
tmp_path: Path, monkeypatch: pytest.MonkeyPatch
) -> None:
"""Install a fake runtime package that records dsh argv and serves lifecycle calls."""
runtime = tmp_path / "dsh.py"
runtime.write_text(
"""
import json
import os
import sys
json.dump({
"argv": sys.argv[1:],
"DSH_HOME": os.environ.get("DSH_HOME"),
"DSH_CORDIS_CONFIG": os.environ.get("DSH_CORDIS_CONFIG"),
}, open(os.environ["ENV_DUMP"], "w"))
for line in sys.stdin:
msg = json.loads(line)
if msg.get("method") == "initialize":
print(json.dumps({"jsonrpc": "2.0", "id": msg["id"], "result": {"serverInfo": {"name": "bundled-runtime"}}}), flush=True)
elif msg.get("method") == "shutdown":
print(json.dumps({"jsonrpc": "2.0", "id": msg["id"], "result": {}}), flush=True)
break
""".strip()
)
module_dir = tmp_path / "deepseek_harness_runtime"
module_dir.mkdir()
(module_dir / "__init__.py").write_text(
f"""
def resolve_bundled_launch_args(mode=None):
return ({sys.executable!r}, {str(runtime)!r})
""".strip()
)
monkeypatch.syspath_prepend(str(tmp_path))
monkeypatch.delitem(sys.modules, "deepseek_harness_runtime", raising=False)
def test_client_default_launch_uses_bundled_dsh_sdk_profile_and_explicit_home(
tmp_path: Path, monkeypatch: pytest.MonkeyPatch
) -> None:
env_dump = tmp_path / "env.json"
home = tmp_path / "home"
patch = tmp_path / "sdk.patch.yml"
patch.write_text("[]\n")
_install_fake_bundled_dsh(tmp_path, monkeypatch)
monkeypatch.chdir(tmp_path)
monkeypatch.setenv("DSH_HOME", str(tmp_path / "ambient-home"))
monkeypatch.delenv("DSH_CORDIS_CONFIG", raising=False)
with HarnessClient(HarnessConfig(
profile="sdk",
patches=("sdk.patch.yml",),
dsh_home=str(home),
env={"ENV_DUMP": str(env_dump), "DSH_HOME": str(tmp_path / "env-home")},
)) as client:
init = client.initialize(provider="deepseek-official", cwd="/workspace", model="deepseek-v4-pro")
assert init.serverInfo.name == "bundled-runtime"
assert json.loads(env_dump.read_text()) == {
"argv": ["--profile", "sdk", "--patch", str(patch)],
"DSH_HOME": str(home),
"DSH_CORDIS_CONFIG": None,
}
def test_client_accepts_explicit_environment_dsh_home(
tmp_path: Path, monkeypatch: pytest.MonkeyPatch
) -> None:
env_dump = tmp_path / "env.json"
home = tmp_path / "environment-home"
_install_fake_bundled_dsh(tmp_path, monkeypatch)
with HarnessClient(
HarnessConfig(profile="custom", env={"ENV_DUMP": str(env_dump), "DSH_HOME": str(home)})
) as client:
client.initialize(provider="deepseek-official", cwd="/workspace", model="deepseek-v4-pro")
assert json.loads(env_dump.read_text()) == {
"argv": ["--profile", "custom"],
"DSH_HOME": str(home),
"DSH_CORDIS_CONFIG": None,
}
def test_client_rejects_an_implicit_default_dsh_home(
tmp_path: Path, monkeypatch: pytest.MonkeyPatch
) -> None:
_install_fake_bundled_dsh(tmp_path, monkeypatch)
monkeypatch.delenv("DSH_HOME", raising=False)
with pytest.raises(ValueError, match="explicit dsh_home or non-empty DSH_HOME"):
HarnessClient(HarnessConfig(env={})).start()
def test_client_reports_missing_bundled_runtime_dependency(monkeypatch: pytest.MonkeyPatch) -> None:
monkeypatch.delitem(sys.modules, "deepseek_harness_runtime", raising=False)
monkeypatch.setattr(sys, "path", [])
with pytest.raises(FileNotFoundError, match="Install deepseek-harness-runtime-bin"):
HarnessClient(HarnessConfig(dsh_home="/explicit/home")).start()