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import math
import unittest
from fastapi.testclient import TestClient
from jev_adapter.__main__ import positive_temperature, temperature_map
from jev_adapter.backend import AdapterError, ScoringResult
from jev_adapter.protocol import SystemOneRequest, probabilities_from_logprobs
from jev_adapter.server import create_app
from jev_adapter.service import SystemOneService
def payload():
return {
"model": "test-model",
"state": {"text": "결제가 두 번 되었어요. 환불해 주세요."},
"questions": {
"route": {
"type": "choice",
"instructions": "담당 부서",
"criteria": {"billing": "청구", "technical": "기술"},
},
"refund": {"type": "noul", "instructions": "환불 요청인가?"},
"urgency": {
"type": "score",
"instructions": "긴급도",
"criteria": ["낮음", "중간", "높음"],
},
},
}
class FakeBackend:
model = "test-model"
def __init__(self, delay=0, failure=False):
self.calls = []
self.active = self.peak = self.cancelled = 0
self.started = self.closed = False
self.delay, self.failure = delay, failure
async def start(self):
self.started = True
async def close(self):
self.closed = True
def labels(self, count):
return tuple(chr(65 + i) for i in range(count)), tuple(range(65, 65 + count))
async def evaluate(self, prompt, images, labels, token_ids, assistant_prefix):
self.calls.append((prompt, images, labels, token_ids, assistant_prefix))
self.active += 1
self.peak = max(self.peak, self.active)
try:
if self.failure:
raise AdapterError(
"backend_unavailable", "Engine unavailable.", status=502
)
await asyncio.sleep(self.delay)
return ScoringResult(
tuple(math.log(0.8 if i == 0 else 0.1) for i in range(len(labels))), 20
)
except asyncio.CancelledError:
self.cancelled += 1
raise
finally:
self.active -= 1
class TestService(unittest.IsolatedAsyncioTestCase):
async def test_mixed_questions_keep_images_and_build_typed_response(self):
backend = FakeBackend()
body = payload()
body["images"] = ["data:image/png;base64,aGVsbG8="]
result = await SystemOneService(backend).score(
SystemOneRequest.model_validate(body)
)
self.assertEqual(result["answers"]["route"]["choice"], "billing")
self.assertAlmostEqual(result["answers"]["refund"]["noul"], 8 / 9)
self.assertAlmostEqual(result["answers"]["urgency"]["score"], 0.3)
self.assertEqual(result["usage"], {"input_tokens": 60, "output_tokens": 0})
self.assertEqual(result["metadata"]["evaluations"], 3)
for call in backend.calls:
self.assertEqual(call[1], body["images"])
self.assertNotIn("담당 부서", backend.calls[1][0])
async def test_rotations_preserve_canonical_option_mapping(self):
body = payload()
body["questions"] = {"route": body["questions"]["route"]}
body["options"] = {"permutations": 2, "return_logprobs": True}
result = await SystemOneService(FakeBackend()).score(
SystemOneRequest.model_validate(body)
)
route = result["answers"]["route"]
self.assertAlmostEqual(route["probabilities"]["billing"], 0.5)
self.assertAlmostEqual(route["confidence"], 0)
self.assertEqual(len(route["logprobs"]), 2)
async def test_concurrency_limit_applies_across_requests(self):
backend = FakeBackend(delay=0.01)
service = SystemOneService(backend, max_concurrency=2)
await asyncio.gather(
*(
service.score(SystemOneRequest.model_validate(payload()))
for _ in range(3)
)
)
self.assertEqual(len(backend.calls), 9)
self.assertEqual(backend.peak, 2)
async def test_cancellation_closes_all_pending_work(self):
backend = FakeBackend(delay=10)
task = asyncio.create_task(
SystemOneService(backend, max_concurrency=2).score(
SystemOneRequest.model_validate(payload())
)
)
while backend.active != 2:
await asyncio.sleep(0)
task.cancel()
with self.assertRaises(asyncio.CancelledError):
await task
self.assertEqual(backend.cancelled, 2)
self.assertEqual(backend.active, 0)
self.assertEqual(len(backend.calls), 2)
async def test_wrong_model_rejected_before_inference(self):
backend = FakeBackend()
body = payload()
body["model"] = "wrong-model"
with self.assertRaises(AdapterError) as error:
await SystemOneService(backend).score(SystemOneRequest.model_validate(body))
self.assertEqual(error.exception.status, 404)
self.assertEqual(backend.calls, [])
class TestDefaultTemperature(unittest.IsolatedAsyncioTestCase):
"""A server-side default fills an omitted options.temperature only."""
vector = tuple(math.log(0.8 if i == 0 else 0.1) for i in range(3))
async def score(self, body, **service_options):
service = SystemOneService(FakeBackend(), **service_options)
return await service.score(SystemOneRequest.model_validate(body))
def route_probabilities(self, result):
return list(result["answers"]["urgency"]["probabilities"].values())
async def test_unset_default_keeps_request_default_of_one(self):
result = await self.score(payload())
self.assertEqual(result["metadata"]["temperature"], 1.0)
expected = probabilities_from_logprobs(self.vector, 1.0)
for actual, wanted in zip(self.route_probabilities(result), expected):
self.assertAlmostEqual(actual, wanted)
async def test_omitted_temperature_takes_server_default(self):
for body in (payload(), {**payload(), "options": {"permutations": 1}}):
result = await self.score(body, default_temperature=2.4)
self.assertEqual(result["metadata"]["temperature"], 2.4)
expected = probabilities_from_logprobs(self.vector, 2.4)
for actual, wanted in zip(self.route_probabilities(result), expected):
self.assertAlmostEqual(actual, wanted)
self.assertNotAlmostEqual(
self.route_probabilities(result)[0],
probabilities_from_logprobs(self.vector, 1.0)[0],
)
async def test_explicit_request_temperature_wins_over_default(self):
body = {**payload(), "options": {"temperature": 1.0}}
result = await self.score(body, default_temperature=2.4)
self.assertEqual(result["metadata"]["temperature"], 1.0)
expected = probabilities_from_logprobs(self.vector, 1.0)
for actual, wanted in zip(self.route_probabilities(result), expected):
self.assertAlmostEqual(actual, wanted)
body = {**payload(), "options": {"temperature": 3.0}}
result = await self.score(body, default_temperature=2.4)
self.assertEqual(result["metadata"]["temperature"], 3.0)
async def test_disabled_scaling_ignores_default(self):
body = {**payload(), "options": {"temperature_scaling": False}}
result = await self.score(body, default_temperature=2.4)
self.assertEqual(result["metadata"]["temperature"], 1.0)
expected = probabilities_from_logprobs(self.vector, 1.0)
for actual, wanted in zip(self.route_probabilities(result), expected):
self.assertAlmostEqual(actual, wanted)
async def test_default_does_not_mutate_the_request(self):
request = SystemOneRequest.model_validate(payload())
service = SystemOneService(FakeBackend(), default_temperature=2.4)
await service.score(request)
self.assertEqual(request.options.temperature, 1.0)
self.assertNotIn("temperature", request.options.model_fields_set)
self.assertEqual(service.effective_options(request).temperature, 2.4)
def test_invalid_default_temperature_rejected_at_construction(self):
for value in (0, -1.0, float("inf"), float("nan"), True, "2.4", None):
with self.assertRaises((ValueError, TypeError)):
SystemOneService(FakeBackend(), default_temperature=value)
self.assertEqual(
SystemOneService(FakeBackend(), default_temperature=2).default_temperature,
2.0,
)
async def test_temperature_by_type_applies_per_answer_type(self):
result = await self.score(
payload(), default_temperature=2.4, temperature_by_type={"score": 3.0, "noul": 1.5}
)
urgency = list(result["answers"]["urgency"]["probabilities"].values())
for actual, wanted in zip(urgency, probabilities_from_logprobs(self.vector, 3.0)):
self.assertAlmostEqual(actual, wanted)
route = list(result["answers"]["route"]["probabilities"].values())
for actual, wanted in zip(route, probabilities_from_logprobs(self.vector[:2], 2.4)):
self.assertAlmostEqual(actual, wanted)
self.assertEqual(result["metadata"]["temperature"], 2.4)
self.assertEqual(result["metadata"]["temperature_by_type"], {"score": 3.0, "noul": 1.5})
async def test_explicit_request_temperature_wins_over_temperature_by_type(self):
body = {**payload(), "options": {"temperature": 1.0}}
result = await self.score(body, temperature_by_type={"score": 3.0})
urgency = list(result["answers"]["urgency"]["probabilities"].values())
for actual, wanted in zip(urgency, probabilities_from_logprobs(self.vector, 1.0)):
self.assertAlmostEqual(actual, wanted)
self.assertNotIn("temperature_by_type", result["metadata"])
async def test_disabled_scaling_ignores_temperature_by_type(self):
body = {**payload(), "options": {"temperature_scaling": False}}
result = await self.score(body, temperature_by_type={"score": 3.0})
urgency = list(result["answers"]["urgency"]["probabilities"].values())
for actual, wanted in zip(urgency, probabilities_from_logprobs(self.vector, 1.0)):
self.assertAlmostEqual(actual, wanted)
self.assertNotIn("temperature_by_type", result["metadata"])
def test_invalid_temperature_by_type_rejected_at_construction(self):
for value in ({"judge": 1.2}, {"score": 0}, {"score": float("nan")}, {"noul": True}):
with self.assertRaises(ValueError):
SystemOneService(FakeBackend(), temperature_by_type=value)
self.assertEqual(SystemOneService(FakeBackend()).temperature_by_type, {})
def test_cli_temperature_map_type(self):
self.assertEqual(temperature_map("choice=1.6, noul=1.2,score=1.8"), {"choice": 1.6, "noul": 1.2, "score": 1.8})
self.assertEqual(temperature_map(""), {})
import argparse
for text in ("choice", "judge=1.2", "choice=0", "choice=1.2,choice=1.3", "noul=abc"):
with self.assertRaises(argparse.ArgumentTypeError):
temperature_map(text)
def test_cli_default_temperature_type(self):
self.assertEqual(positive_temperature("2.4"), 2.4)
self.assertEqual(positive_temperature("1"), 1.0)
import argparse
for text in ("0", "-1", "inf", "nan", "abc", ""):
with self.assertRaises(argparse.ArgumentTypeError):
positive_temperature(text)
class TestPromptWording(unittest.IsolatedAsyncioTestCase):
"""--prompt-wording is a server-wide setting (CLI/env, not per-request);
the default keeps today's served text unchanged."""
async def test_default_served_wording_is_unchanged(self):
backend = FakeBackend()
body = payload()
body["questions"] = {"route": body["questions"]["route"]}
await SystemOneService(backend).score(SystemOneRequest.model_validate(body))
prompt = backend.calls[0][0]
self.assertTrue(prompt.startswith("Context:\n"))
async def test_native_wording_is_plumbed_into_build_prompt(self):
backend = FakeBackend()
body = payload()
body["questions"] = {"route": body["questions"]["route"]}
service = SystemOneService(backend, prompt_wording="native")
await service.score(SystemOneRequest.model_validate(body))
prompt = backend.calls[0][0]
self.assertTrue(prompt.startswith("Read the state and question."))
self.assertIn("\n\nState:\n", prompt)
self.assertNotIn("Context:\n", prompt)
async def test_native_wording_requires_canonical_az_labels(self):
# FakeBackend.labels() already returns canonical A, B, C, ... so this
# documents the happy path; build_prompt itself enforces the
# requirement (see TestNativePromptWording in test_protocol.py) when a
# backend's labels are not canonical.
backend = FakeBackend()
labels, _ = backend.labels(3)
self.assertEqual(labels, ("A", "B", "C"))
def test_invalid_prompt_wording_rejected_at_construction(self):
for value in ("", "SERVED", "native ", None, 1):
with self.assertRaises(ValueError):
SystemOneService(FakeBackend(), prompt_wording=value)
class TestHTTP(unittest.TestCase):
def test_standalone_app_lifecycle_schema_and_alias(self):
backend = FakeBackend()
with TestClient(create_app(backend)) as client:
self.assertTrue(backend.started)
self.assertEqual(client.get("/health").json(), {"status": "ok"})
self.assertEqual(
client.get("/v1/models").json()["data"][0]["id"], backend.model
)
body = payload()
body["model"] = "jev-latest"
response = client.post("/v1/systemone", json=body)
self.assertEqual(response.status_code, 200)
self.assertEqual(response.json()["model"], backend.model)
self.assertEqual(
set(response.json()["answers"]), {"route", "refund", "urgency"}
)
bad = client.post("/v1/systemone", json={"model": backend.model})
self.assertEqual(bad.status_code, 422)
self.assertEqual(bad.json()["error"]["code"], "invalid_request")
self.assertTrue(backend.closed)
def test_app_default_temperature_applies_when_request_omits_it(self):
with TestClient(create_app(FakeBackend(), default_temperature=2.4)) as client:
response = client.post("/v1/systemone", json=payload())
self.assertEqual(response.status_code, 200)
self.assertEqual(response.json()["metadata"]["temperature"], 2.4)
body = {**payload(), "options": {"temperature": 1.5}}
response = client.post("/v1/systemone", json=body)
self.assertEqual(response.json()["metadata"]["temperature"], 1.5)
with self.assertRaises(ValueError):
create_app(FakeBackend(), default_temperature=0)
def test_app_prompt_wording_native_reaches_the_backend_over_http(self):
backend = FakeBackend()
with TestClient(create_app(backend, prompt_wording="native")) as client:
body = payload()
body["questions"] = {"route": body["questions"]["route"]}
response = client.post("/v1/systemone", json=body)
self.assertEqual(response.status_code, 200)
self.assertTrue(backend.calls[0][0].startswith("Read the state and question."))
def test_auth_guards_inference_and_model_discovery(self):
backend = FakeBackend()
with TestClient(create_app(backend, api_key="test-secret")) as client:
self.assertEqual(client.get("/v1/models").status_code, 401)
self.assertEqual(
client.post("/v1/systemone", json=payload()).status_code, 401
)
self.assertEqual(
client.post(
"/v1/systemone",
json=payload(),
headers={b"Authorization": b"Bearer caf\xe9"},
).status_code,
401,
)
self.assertEqual(backend.calls, [])
response = client.post(
"/v1/systemone",
json=payload(),
headers={"Authorization": "Bearer test-secret"},
)
self.assertEqual(response.status_code, 200)
def test_upstream_failure_is_not_returned_as_probabilities(self):
with TestClient(create_app(FakeBackend(failure=True))) as client:
response = client.post("/v1/systemone", json=payload())
self.assertEqual(response.status_code, 502)
self.assertEqual(response.json()["error"]["code"], "backend_unavailable")
self.assertNotIn("answers", response.json())
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