cecli/tests/basic/test_system_one.py at main · cecli-dev/cecli · GitHub

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"""Tests for the System One helper: endpoint config, wire format, parsing.

These cover the shapes the /v1/systemone endpoint accepts and returns, using a

stubbed transport so no server or API key is involved.

"""

import json

import os

import tempfile

import pytest

import yaml

from cecli.args import get_parser

from cecli.helpers import config_utils, system_one

from cecli.hooks.helpers import HookHelpers

from cecli.main import convert_yaml_to_json_string

@pytest.fixture(autouse=True)

def clean_config():

system_one.reset()

yield

system_one.reset()

@pytest.fixture

def transport(monkeypatch):

"""Capture request payloads and reply with a canned response body."""

class Stub:

def __init__(self):

self.payloads = []

self.responses = []

def reply(self, body):

self.responses.append(body)

async def _post(self, payload):

self.payloads.append(payload)

if self.responses:

return self.responses.pop(0)

raise AssertionError("no canned response queued")

stub = Stub()

monkeypatch.setattr(system_one.SystemOneClient, "_post", stub._post)

return stub

def _noul_body(question_id="q"):

return {

"model": "von-1.3.0",

"answers": {question_id: {"type": "noul", "noul": 0.95}},

"usage": {"input_tokens": 296, "output_tokens": 20},

}

def _choice_body(question_id="decision"):

return {

"model": "von-1.3.0",

"answers": {

question_id: {

"type": "choice",

"choice": "billing",

"probabilities": {"billing": 0.88, "technical": 0.12},

"confidence": 0.81,

}

"usage": {"input_tokens": 318, "output_tokens": 34},

}

def _score_body(question_id="rating"):

return {

"model": "von-1.3.0",

"answers": {

question_id: {

"type": "score",

"score": 1.05,

"legend": {"0": "Calm", "1": "Frustrated", "2": "Very angry"},

"probabilities": {"0": 0.0, "1": 0.95, "2": 0.05},

"confidence": 0.92,

}

"usage": {"input_tokens": 304, "output_tokens": 18},

}

class Coder:

"""Minimal coder stand-in for the hook helper."""

# --------------------------------------------------------------------------

# endpoint configuration

def test_default_endpoint_is_local_and_vendor_neutral():

config = system_one.SystemOneConfig()

assert config.api_base == "http://127.0.0.1:8000"

assert config.endpoint_url == "http://127.0.0.1:8000/v1/systemone"

assert config.api_key_env == ["SYSTEM_ONE_API_KEY"]

def test_from_env_only_reads_system_one_vars(monkeypatch):

monkeypatch.setenv("SYSTEM_ONE_API_BASE", "http://decide.internal:9000")

monkeypatch.setenv("SYSTEM_ONE_MODEL", "von-1.3.0")

monkeypatch.setenv("VON_BASE_URL", "http://should-be-ignored:1")

config = system_one.SystemOneConfig.from_env()

assert config.api_base == "http://decide.internal:9000"

assert config.model_name == "von-1.3.0"

def test_from_dict_reads_documented_keys():

config = system_one.SystemOneConfig.from_dict(

{

"api_base": "http://127.0.0.1:8000/",

"api_key_env": ["LITELLM_API_KEY"],

"model_name": "von-latest",

"extra_headers": {"optional": "a", "optional2": "b"},

}

)

assert config.api_base == "http://127.0.0.1:8000"

assert config.api_key_env == ["LITELLM_API_KEY"]

assert config.model_name == "von-latest"

assert config.extra_headers == {"optional": "a", "optional2": "b"}

def test_from_dict_accepts_key_spelling_variants():

config = system_one.SystemOneConfig.from_dict(

{"api-base": "http://h:1/v1", "model": "m-1", "headers": {"x-a": "1"}}

)

assert config.endpoint_url == "http://h:1/v1/systemone"

assert config.model_name == "m-1"

assert config.extra_headers == {"x-a": "1"}

def test_string_api_key_env_is_promoted_to_list():

config = system_one.SystemOneConfig.from_dict({"api_key_env": "MY_KEY"})

assert config.api_key_env == ["MY_KEY"]

def test_api_key_and_headers_are_assembled(monkeypatch):

monkeypatch.delenv("SYSTEM_ONE_API_KEY", raising=False)

config = system_one.SystemOneConfig.from_dict({"extra_headers": {"x-trace": "1"}})

assert "Authorization" not in config.build_headers()

assert config.build_headers()["x-trace"] == "1"

monkeypatch.setenv("SYSTEM_ONE_API_KEY", "secret")

assert config.build_headers()["Authorization"] == "Bearer secret"

def test_configured_key_env_names_are_the_only_ones_probed(monkeypatch):

monkeypatch.setenv("LITELLM_API_KEY", "lit")

monkeypatch.setenv("SYSTEM_ONE_API_KEY", "one")

config = system_one.SystemOneConfig.from_dict({"api_key_env": ["LITELLM_API_KEY"]})

assert config.resolve_api_key() == "lit"

assert system_one.SystemOneConfig.from_env().resolve_api_key() == "one"

def test_configure_installs_and_reset_falls_back_to_env(monkeypatch):

monkeypatch.setenv("SYSTEM_ONE_API_BASE", "http://env-host:8000")

assert not system_one.is_configured()

assert system_one.get_config().api_base == "http://env-host:8000"

assert system_one.configure({"api_base": "http://cli-host:8000"}) is not None

assert system_one.get_config().api_base == "http://cli-host:8000"

# An empty payload (the {} a config-file merge can leave behind) is a no-op.

assert system_one.configure({}) is None

assert system_one.get_config().api_base == "http://cli-host:8000"

system_one.reset()

assert system_one.get_config().api_base == "http://env-host:8000"

# --------------------------------------------------------------------------

# wire format: questions

def test_noul_question_shape():

assert system_one.noul("Is this urgent?") == {"type": "noul", "instructions": "Is this urgent?"}

def test_noul_question_with_criteria():

question = system_one.noul("Is this urgent?", true="Time sensitive", false="No urgency")

assert question["criteria"] == {"true": "Time sensitive", "false": "No urgency"}

def test_choice_question_from_map_and_from_names():

from_map = system_one.choice("Who owns this?", {"billing": "Payments", "infra": "Bugs"})

assert from_map["type"] == "choice"

assert from_map["criteria"] == {"billing": "Payments", "infra": "Bugs"}

from_names = system_one.choice("Who owns this?", ["billing", "infra"])

assert from_names["criteria"] == {"billing": None, "infra": None}

def test_score_question_keeps_level_order():

question = system_one.score("How frustrated?", ["Calm", "Frustrated", "Very angry"])

assert question == {

"type": "score",

"instructions": "How frustrated?",

"criteria": ["Calm", "Frustrated", "Very angry"],

}

def test_instructions_may_be_structured():

instructions = {

"potential_duplicate": {"name": "John Smith"},

"question": "Is the resume for the same person as `potential_duplicate`?",

}

question = system_one.noul(instructions)

assert question["instructions"] == instructions

def test_build_payload_carries_state_model_and_questions():

payload = system_one.build_payload(

{"ticket": "INC-1"}, {"a": system_one.noul("urgent?")}, default_model="von-1.3.0"

)

assert payload["state"] == {"ticket": "INC-1"}

assert payload["model"] == "von-1.3.0"

assert payload["questions"] == {"a": {"type": "noul", "instructions": "urgent?"}}

# --------------------------------------------------------------------------

# wire format: answers

def test_parse_noul_answer():

response = system_one.parse_response(_noul_body())

answer = response.answers["q"]

assert isinstance(answer, system_one.NoulAnswer)

assert answer.probability == 0.95

assert answer.yes is True

assert answer.to_dict() == {"type": "noul", "noul": 0.95, "yes": True}

assert response.model == "von-1.3.0"

assert response.usage == {"input_tokens": 296, "output_tokens": 20}

def test_parse_choice_answer():

answer = system_one.parse_response(_choice_body()).answers["decision"]

assert isinstance(answer, system_one.ChoiceAnswer)

assert answer.choice == "billing"

assert answer.probabilities == {"billing": 0.88, "technical": 0.12}

assert answer.confidence == 0.81

assert set(answer.to_dict()) == {"type", "choice", "probabilities", "confidence"}

def test_parse_score_answer_and_levels():

answer = system_one.parse_response(_score_body()).answers["rating"]

assert isinstance(answer, system_one.ScoreAnswer)

assert answer.score == 1.05

assert answer.levels == ["Calm", "Frustrated", "Very angry"]

assert answer.probabilities == {"0": 0.0, "1": 0.95, "2": 0.05}

assert answer.to_dict()["legend"]["2"] == "Very angry"

def test_missing_numeric_fields_default_to_zero():

answer = system_one.parse_answer({"type": "choice", "choice": "billing"})

assert answer.choice == "billing"

assert answer.probabilities == {}

assert answer.confidence == 0.0

def test_non_numeric_values_do_not_crash_parsing():

answer = system_one.parse_answer({"type": "noul", "noul": "0.7"})

assert answer.probability == 0.7

def test_unknown_answer_type_is_rejected():

with pytest.raises(ValueError, match="Unknown System One answer type"):

system_one.parse_answer({"type": "wizard", "wizard": 1})

def test_non_object_answer_is_rejected():

with pytest.raises(ValueError, match="must be an object"):

system_one.parse_answer("noul")

def test_response_is_lookup_friendly():

response = system_one.parse_response(_noul_body("urgent"))

assert "urgent" in response

assert response["urgent"].probability == 0.95

assert response.get("missing") is None

assert response.to_dict()["answers"]["urgent"]["type"] == "noul"

# --------------------------------------------------------------------------

# application api: decide / judge / rate / ask

async def test_decide_sends_choice_question_and_parses(transport):

transport.reply(_choice_body())

answer = await system_one.decide(

state="Disk volume /var/log at 98%.",

choices={"sre": "Infrastructure", "app": "Application code"},

instructions="Who owns this?",

)

question = transport.payloads[0]["questions"]["decision"]

assert question["type"] == "choice"

assert question["criteria"] == {"sre": "Infrastructure", "app": "Application code"}

assert answer.choice == "billing"

assert transport.payloads[0]["model"] == system_one.get_config().model_name

async def test_judge_sends_noul_question_with_criteria(transport):

transport.reply(_noul_body("judgment"))

answer = await system_one.judge(

state="Connection pool exhausted.",

instructions="Is this blocking customers?",

criteria={"true": "Requests fail", "false": "Internal only"},

)

question = transport.payloads[0]["questions"]["judgment"]

assert question["type"] == "noul"

assert question["criteria"] == {"true": "Requests fail", "false": "Internal only"}

assert answer.probability == 0.95

async def test_judge_ignores_unrecognized_criteria_keys(transport):

transport.reply(_noul_body("judgment"))

await system_one.judge(state="x", instructions="y?", criteria={"true": "a", "extra": 1})

assert transport.payloads[0]["questions"]["judgment"]["criteria"] == {"true": "a"}

async def test_judge_accepts_a_true_false_pair(transport):

transport.reply(_noul_body("judgment"))

await system_one.judge(state="x", instructions="y?", criteria=["blocking", "internal only"])

assert transport.payloads[0]["questions"]["judgment"]["criteria"] == {

"true": "blocking",

"false": "internal only",

}

async def test_judge_without_criteria_omits_the_field(transport):

transport.reply(_noul_body("judgment"))

await system_one.judge(state="x", instructions="Is this true?")

assert "criteria" not in transport.payloads[0]["questions"]["judgment"]

async def test_rate_sends_score_question(transport):

transport.reply(_score_body())

answer = await system_one.rate(

state="Memory at 98%.",

levels=["Nominal", "Degraded", "Critical"],

instructions="Assess degradation.",

)

assert transport.payloads[0]["questions"]["rating"]["criteria"] == [

"Nominal",

"Degraded",

"Critical",

]

assert answer.score == 1.05

async def test_ask_evaluates_several_questions_in_one_request(transport):

transport.reply(

{

"model": "von-1.3.0",

"answers": {

"intent": {"type": "choice", "choice": "payment_failure", "probabilities": {}},

"is_urgent": {"type": "noul", "noul": 0.9},

"usage": {"input_tokens": 300, "output_tokens": 20},

}

)

response = await system_one.ask(

state={"ticket": "INC-4091", "message": "Gateway timeouts."},

questions={

"intent": system_one.choice(

"Nature of the ticket?", {"payment_failure": "Charges fail"}

"is_urgent": system_one.noul("Needs immediate intervention?"),

)

assert len(transport.payloads) == 1

assert sorted(transport.payloads[0]["questions"]) == ["intent", "is_urgent"]

assert response["intent"].choice == "payment_failure"

assert response["is_urgent"].probability == 0.9

async def test_system_one_call_matches_ask(transport):

transport.reply(_noul_body("is_urgent"))

response = await system_one.system_one(

state="Payouts failing.",

questions={"is_urgent": system_one.noul("Urgent?")},

)

assert response["is_urgent"].probability == 0.95

assert response.model == "von-1.3.0"

async def test_model_override_reaches_the_payload(transport):

transport.reply(_noul_body("judgment"))

await system_one.judge(state="x", instructions="y?", model="custom-model")

assert transport.payloads[0]["model"] == "custom-model"

async def test_request_uses_configured_endpoint_and_headers(monkeypatch):

import httpx

monkeypatch.setenv("SYSTEM_ONE_API_KEY", "secret")

system_one.configure(

{

"api_base": "http://decide.test:8000",

"model_name": "von-1.3.0",

"extra_headers": {"x-a": "b"},

}

)

seen = {}

_fake_httpx_client(monkeypatch, seen, [httpx.Response(200, json=_noul_body("judgment"))])

answer = await system_one.judge(state="x", instructions="blocking?")

assert seen["url"] == "http://decide.test:8000/v1/systemone"

assert seen["headers"]["Authorization"] == "Bearer secret"

assert seen["headers"]["x-a"] == "b"

assert seen["json"]["model"] == "von-1.3.0"

assert answer.probability == 0.95

async def test_rate_limited_responses_are_retried(monkeypatch):

import asyncio

import httpx

async def _no_sleep(*args, **kwargs):

return None

system_one.configure({"api_base": "http://decide.test:8000", "max_retries": 2})

monkeypatch.setattr(asyncio, "sleep", _no_sleep)

seen = {"count": 0}

responses = [

httpx.Response(429, text="slow down"),

httpx.Response(529, text="overloaded"),

httpx.Response(200, json=_noul_body("judgment")),

]

_fake_httpx_client(monkeypatch, seen, responses)

answer = await system_one.judge(state="x", instructions="blocking?")

assert answer.probability == 0.95

assert seen["count"] == 3

async def test_missing_api_key_is_named_in_auth_errors(monkeypatch):

import httpx

monkeypatch.delenv("SYSTEM_ONE_API_KEY", raising=False)

monkeypatch.delenv("LITELLM_API_KEY", raising=False)

system_one.configure(

{

"api_base": "http://decide.test:8000",

"api_key_env": ["SYSTEM_ONE_API_KEY", "LITELLM_API_KEY"],

"max_retries": 0,

}

)

_fake_httpx_client(

monkeypatch,

{"count": 0},

[httpx.Response(403, json={"detail": "Must supply an API key"})],

)

with pytest.raises(system_one.SystemOneError) as excinfo:

await system_one.judge(state="x", instructions="y?")

message = str(excinfo.value)

assert "SYSTEM_ONE_API_KEY, LITELLM_API_KEY" in message

assert "No API key was sent" in message

async def test_error_status_raises_system_one_error(monkeypatch):

import httpx

system_one.configure({"api_base": "http://decide.test:8000", "max_retries": 0})

_fake_httpx_client(

monkeypatch,

{"count": 0},

[httpx.Response(422, json={"detail": "missing field: questions"})],

)

with pytest.raises(system_one.SystemOneError) as excinfo:

await system_one.judge(state="x", instructions="y?")

assert excinfo.value.status_code == 422

assert "missing field" in str(excinfo.value)

def _fake_httpx_client(monkeypatch, seen, responses):

"""Replace the client's AsyncClient with one that replays *responses* in order.

SystemOneClient imports its http module through :mod:`cecli.http`, which

resolves to ``httpx2`` when the installed mcp SDK is >= 2, so patch that

module rather than plain ``httpx``.

"""

from cecli.http import httpx as client_httpx

class FakeClient:

def __init__(self, *args, **kwargs):

seen.setdefault("init", kwargs)

async def __aenter__(self):

return self

async def __aexit__(self, *exc):

return False

async def post(self, url, json=None, headers=None):

seen["url"] = url

seen["json"] = json

seen["headers"] = headers

seen["count"] = seen.get("count", 0) + 1

return responses.pop(0)

monkeypatch.setattr(client_httpx, "AsyncClient", FakeClient)

return FakeClient

# --------------------------------------------------------------------------

# hook helper

async def test_hook_helper_questions_form_returns_dicts(transport):

transport.reply(_noul_body("is_urgent"))

result = await HookHelpers.system_one(

Coder(),

state="Help! My payouts have been failing for 3 days.",

questions={"is_urgent": "Does this convey urgency?"},

)

assert result == {

"model": "von-1.3.0",

"usage": {"input_tokens": 296, "output_tokens": 20},

"answers": {"is_urgent": {"type": "noul", "noul": 0.95, "yes": True}},

}

async def test_hook_helper_decide_form(transport):

transport.reply(_choice_body())

result = await HookHelpers.system_one(

Coder(),

state="Database replication lag exceeded 45 seconds.",

decide={

"choices": {"infrastructure": "Hardware or network", "billing": "Invoices"},

"instructions": "Classify the root cause domain.",

)

decision = result["answers"]["decision"]

assert decision["type"] == "choice"

assert decision["choice"] == "billing"

assert decision["confidence"] == 0.81

assert transport.payloads[0]["questions"]["decision"]["type"] == "choice"

async def test_hook_helper_judge_and_rate_forms(transport):

transport.reply(_noul_body("judgment"))

transport.reply(_score_body())

judged = await HookHelpers.system_one(

Coder(),

state="x",

judge={"instructions": "Blocking?", "criteria": {"true": "yes means blocking"}},

)

rated = await HookHelpers.system_one(

Coder(), state="x", rate={"levels": ["Low", "High"], "instructions": "Severity?"}

)

assert judged["answers"]["judgment"]["type"] == "noul"

assert rated["answers"]["rating"]["type"] == "score"

assert rated["answers"]["rating"]["score"] == 1.05

assert transport.payloads[1]["questions"]["rating"]["criteria"] == ["Low", "High"]

async def test_hook_helper_rate_accepts_a_bare_level_list(transport):

transport.reply(_score_body())

await HookHelpers.system_one(Coder(), state="x", rate=["Nominal", "Degraded", "Critical"])

assert transport.payloads[0]["questions"]["rating"]["criteria"] == [

"Nominal",

"Degraded",

"Critical",

]

async def test_hook_helper_defaults_state_to_the_conversation(transport, monkeypatch):

transport.reply(_noul_body("judgment"))

messages = [{"role": "user", "content": "payouts are failing"}]

monkeypatch.setattr(HookHelpers, "get_messages", staticmethod(lambda coder, last_n: messages))

await HookHelpers.system_one(Coder(), judge="Urgent?")

assert transport.payloads[0]["state"] == messages

async def test_hook_helper_requires_exactly_one_form(transport):

with pytest.raises(ValueError, match="exactly one of"):

await HookHelpers.system_one(Coder(), state="x")

with pytest.raises(ValueError, match="exactly one of"):

await HookHelpers.system_one(Coder(), state="x", judge="a?", decide={"choices": ["a"]})

async def test_hook_helper_rejects_a_bad_question_value(transport):

with pytest.raises(TypeError, match="must be a dict or instructions string"):

await HookHelpers.system_one(Coder(), state="x", questions={"bad": 17})

# --------------------------------------------------------------------------

# integrations: the shorthand vocabulary subsystems call through

def test_build_questions_maps_each_form_to_the_wire_format():

from cecli.helpers.system_one import integrations

assert integrations.build_questions(questions={"a": system_one.noul("q?")}) == {

"a": {"type": "noul", "instructions": "q?"}

}

assert integrations.build_questions(decide={"choices": {"x": "X"}}) == {

"decision": {

"type": "choice",

"instructions": integrations.DEFAULT_DECIDE_INSTRUCTIONS,

"criteria": {"x": "X"},

}

assert integrations.build_questions(judge="blocking?") == {

"judgment": {"type": "noul", "instructions": "blocking?"}

}

assert integrations.build_questions(rate=["Low", "High"]) == {

"rating": {

"type": "score",

"instructions": integrations.DEFAULT_RATE_INSTRUCTIONS,

"criteria": ["Low", "High"],

}

def test_build_questions_expands_string_shorthands():

from cecli.helpers.system_one import integrations

built = integrations.build_questions(questions={"is_urgent": "Urgent?"})

assert built == {"is_urgent": {"type": "noul", "instructions": "Urgent?"}}

def test_build_questions_drops_unrecognized_judge_criteria():

from cecli.helpers.system_one import integrations

built = integrations.build_questions(

judge={"instructions": "y?", "criteria": {"true": "a", "maybe": "b"}}

)

assert built["judgment"]["criteria"] == {"true": "a"}

def test_build_questions_requires_exactly_one_form():

from cecli.helpers.system_one import integrations

with pytest.raises(ValueError, match="exactly one of"):

integrations.build_questions()

with pytest.raises(ValueError, match="exactly one of"):

integrations.build_questions(judge="a?", decide=["a", "b"])

def test_build_questions_rejects_a_bad_question_value():

from cecli.helpers.system_one import integrations

with pytest.raises(TypeError, match="must be a dict or instructions string"):

integrations.build_questions(questions={"bad": 17})

async def test_evaluate_returns_plain_dicts(transport):

from cecli.helpers.system_one import integrations

transport.reply(_choice_body())

result = await integrations.evaluate("some state", decide={"choices": ["a", "b"]})

assert isinstance(result, dict)

assert set(result) == {"model", "usage", "answers"}

assert result["answers"]["decision"]["type"] == "choice"

assert isinstance(result["answers"]["decision"]["probabilities"], dict)

# --------------------------------------------------------------------------

# --system-one / config-file plumbing

def _resolve_system_one_arg(tmp_path, file_config, cli_json):

"""Replicate the config-file -> parser -> deep-merge path main_async uses."""

conf = tmp_path / ".cecli.conf.yml"

conf.write_text("system-one: |\n " + json.dumps(file_config) + "\n")

paths = [str(conf)]

merged_config = config_utils.read_and_merge_all_configs(paths, [], paths)

fd, tmp = tempfile.mkstemp(suffix=".yml", prefix="cecli_merged_")

os.close(fd)

with open(tmp, "w") as handle:

yaml.dump(merged_config, handle)

try:

parser = get_parser([tmp], None)

argv = [f"--system-one={cli_json}"] if cli_json else []

args, _ = parser.parse_known_args(argv)

finally:

os.unlink(tmp)

return convert_yaml_to_json_string(args.system_one, merged_config.get("system-one"))

def test_config_file_supplies_the_endpoint(tmp_path):

resolved = _resolve_system_one_arg(

tmp_path,

{"api_base": "http://file-host:8000", "model_name": "von-1.3.0"},

None,

)

assert system_one.configure(json.loads(resolved)) is not None

config = system_one.get_config()

assert config.api_base == "http://file-host:8000"

assert config.model_name == "von-1.3.0"

def test_cli_system_one_deep_merges_over_the_config_file(tmp_path):

resolved = _resolve_system_one_arg(

tmp_path,

{"api_base": "http://file-host:8000", "api_key_env": ["FILE_KEY"]},

json.dumps({"api_base": "http://cli-host:9000"}),

)

assert system_one.configure(json.loads(resolved)) is not None

config = system_one.get_config()

assert config.api_base == "http://cli-host:9000" # CLI wins per key

assert config.api_key_env == ["FILE_KEY"] # file-only key preserved

def test_extra_headers_survive_the_config_round_trip(tmp_path):

resolved = _resolve_system_one_arg(

tmp_path,

{"api_base": "http://h:1", "extra_headers": {"optional": "a"}},

json.dumps({"extra_headers": {"optional2": "b"}}),

)

system_one.configure(json.loads(resolved))

assert system_one.get_config().extra_headers == {"optional": "a", "optional2": "b"}

cecli/tests/basic/test_system_one.py at main · cecli-dev/cecli · GitHub

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