great-ai/tests/test_cache_regressions.py
2026-10-28 22:32:14 +00:00

200 lines
6.1 KiB
Python

import asyncio
from typing import Any, Dict, List, Tuple
import pytest
from fastapi.testclient import TestClient
from great_ai import GreatAI
from great_ai.context import get_context
def test_nested_tuple_inputs_can_be_cached(isolated_context: None) -> None:
calls = 0
@GreatAI.create
def predict(value: Tuple[Dict[str, int]]) -> int:
nonlocal calls
calls += 1
return value[0]["x"]
assert predict(({"x": 7},)).output == 7
assert predict(({"x": 7},)).output == 7
assert calls == 1
@pytest.mark.asyncio
@pytest.mark.parametrize("cancelled", [False, True])
async def test_async_predictions_retry_after_failure(
isolated_context: None, cancelled: bool
) -> None:
calls = 0
@GreatAI.create
async def predict(value: int) -> int:
nonlocal calls
calls += 1
if calls == 1:
if cancelled:
raise asyncio.CancelledError()
raise ValueError("temporary failure")
return value
with pytest.raises(asyncio.CancelledError if cancelled else ValueError):
await predict(7)
assert (await predict(7)).output == 7
assert (await predict(7)).output == 7
assert calls == 2
def test_prediction_mutation_does_not_change_cache_keys(isolated_context: None) -> None:
calls = 0
@GreatAI.create
def predict(values: List[int]) -> int:
nonlocal calls
calls += 1
values.append(1)
return len(values)
original: List[int] = []
assert predict(original).output == 1
assert predict([]).output == 1
assert original == []
assert calls == 1
def test_caller_mutation_does_not_change_cached_trace_values(
isolated_context: None,
) -> None:
@GreatAI.create
def predict(values: List[List[int]]) -> int:
return values[0][0]
original = [[1]]
first = predict(original)
original[0][0] = 2
assert predict(original).output == 2
assert predict([[1]]).trace_id == first.trace_id
assert first.logged_values["arg:values:value"] == [[1]]
@pytest.mark.asyncio
@pytest.mark.parametrize("is_async", [False, True])
@pytest.mark.parametrize("do_not_persist", [False, True])
async def test_returned_traces_cannot_mutate_cached_results(
isolated_context: None, is_async: bool, do_not_persist: bool
) -> None:
calls = 0
def predict(values: List[int]) -> List[List[int]]:
nonlocal calls
calls += 1
return [values]
async def predict_async(values: List[int]) -> List[List[int]]:
return predict(values)
service: Any = GreatAI.create(predict_async if is_async else predict)
first = service([1], do_not_persist_traces=do_not_persist)
if is_async:
first = await first
trace_id = first.trace_id
first.output[0].append(99)
first.logged_values["arg:values:value"].append(88)
first.tags.append("changed")
first.trace_id = "changed"
first.feedback = "changed"
second = service([1], do_not_persist_traces=do_not_persist)
if is_async:
second = await second
assert second.trace_id == trace_id
assert second.output == [[1]]
assert second.logged_values["arg:values:value"] == [1]
assert "changed" not in second.tags
assert second.feedback is None
assert calls == 1
stored = get_context().tracing_database.get(trace_id)
if do_not_persist:
assert stored is None
else:
assert stored is not None
assert stored.output == [[1]]
@pytest.mark.parametrize("is_async", [False, True])
def test_cached_predictions_follow_http_feedback_and_deletion(
isolated_context: None, is_async: bool
) -> None:
calls = 0
def predict(value: int) -> int:
nonlocal calls
calls += 1
return value * 2
async def predict_async(value: int) -> int:
return predict(value)
service: Any = GreatAI.create(predict_async if is_async else predict)
with TestClient(service.app) as client:
first = client.post("/predict", json={"value": 2}).json()
trace_url = f"/traces/{first['trace_id']}"
feedback_url = f"{trace_url}/feedback/"
assert (
client.put(
feedback_url, json={"feedback": {"label": "correct"}}
).status_code
== 202
)
second = client.post("/predict", json={"value": 2}).json()
assert second["trace_id"] == first["trace_id"]
assert second["feedback"] == {"label": "correct"}
assert second == client.get(trace_url).json()
assert calls == 1
assert client.delete(feedback_url).status_code == 204
assert client.post("/predict", json={"value": 2}).json()["feedback"] is None
assert client.delete(trace_url).status_code == 204
third = client.post("/predict", json={"value": 2}).json()
assert third["trace_id"] != first["trace_id"]
assert third["output"] == 4
assert calls == 2
assert client.get(f"/traces/{third['trace_id']}").json() == third
assert (
client.put(
f"/traces/{third['trace_id']}/feedback/", json={"feedback": "correct"}
).status_code
== 202
)
@pytest.mark.asyncio
@pytest.mark.parametrize("is_async", [False, True])
async def test_cached_predictions_observe_direct_database_changes(
isolated_context: None, is_async: bool
) -> None:
def predict(value: int) -> int:
return value
async def predict_async(value: int) -> int:
return value
service: Any = GreatAI.create(predict_async if is_async else predict)
first = service(1)
if is_async:
first = await first
database = get_context().tracing_database
stored = database.get(first.trace_id)
assert stored is not None
stored.feedback = ["updated outside the service"]
database.update(first.trace_id, stored)
second = service(1)
if is_async:
second = await second
assert second.feedback == stored.feedback
second.feedback.append("caller change")
database.delete(first.trace_id)
third = service(1)
if is_async:
third = await third
assert third.trace_id != first.trace_id
assert database.get(third.trace_id) is not None