Files
dev-puppeteer/my-deepagent/tests/unit/test_middleware_cost.py
chungyeong 17ba5d723b feat(my-deepagent): v0.1.0 Step 0~5 — scaffolding through deepagent + OpenRouter
Python rewrite of the agent harness on top of deepagents 0.6.1 + langchain 1.x,
replacing the abandoned TS attempt in packages/. 388 unit/integration tests pass.

Steps
-----
0. Scaffolding — uv workspace, ruff/mypy/pre-commit/alembic, src/tests/docs
   trees with docs/schemas/ seeded from my-deepagent-seed/.
1. Core — config (pydantic-settings with MYDEEPAGENT_ env prefix and TOML
   source), enums (Backend, Capability, RiskLevel, ApprovalDecisionAction,
   ApprovalState, RunState, RunPhaseState, SessionState, ErrorClass),
   errors (MyDeepAgentError + BudgetExhaustedError with PEP-3134 cause +
   context suppression), hash (canonical JSON + sha256).
2. Persona/Workflow/Binding — pydantic v2 schemas with tuple-based deep
   immutability (post-construction hash drift prevented), YAML loaders,
   deterministic auto-select (preferred_backends → version → name → hash),
   override resolution with ineligibility diagnostics, PersonaConsentStore
   with fcntl.flock + tmp+fsync+rename atomic write.
3. Artifact schema registry — Draft202012Validator, multi-root resolution,
   structured ValidationFinding output.
4. Persistence — 18 SQLAlchemy 2.0 async ORM models with FK CASCADE/RESTRICT,
   WAL + busy_timeout + foreign_keys PRAGMA, alembic baseline +
   ux_active_run_repo_base partial unique index, LangGraph SqliteSaver as
   context manager only (lifecycle safety).
5. DeepAgent session — build_agent wires Persona → create_deep_agent with
   LocalShellBackend / FilesystemBackend / StateBackend / CompositeBackend,
   ChatOpenAI(base_url=openrouter) for openrouter: model strings, and 4
   middleware classes (cost / audit-tool / safety-shell / fallback-model).

Critical workarounds
--------------------
- deepagents 0.6.1 rejects FilesystemPermission together with backends that
  implement SandboxBackendProtocol (LocalShellBackend). SafetyShellMiddleware
  enforces destructive-command and secret-path policy at the tool layer
  instead, and build_agent strips the permissions kwarg when the persona's
  deepagents_backend is local_shell.
- FilesystemOperation in deepagents is Literal['read', 'write'] only;
  _map_operations collapses our richer schema (read/write/edit/ls) safely.

Real OpenRouter smoke
---------------------
test_openrouter_deepagents_local_shell_smoke calls DeepSeek via deepagents +
LocalShellBackend + SafetyShellMiddleware end-to-end. PASS, ~$0.000001 cost,
input=9 / output=1 tokens with content "OK".

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-15 19:40:02 +09:00

144 lines
4.8 KiB
Python

"""Unit tests for src/my_deepagent/middleware/cost.py."""
from __future__ import annotations
from typing import Any
from unittest.mock import AsyncMock, MagicMock
from uuid import UUID
import pytest
from my_deepagent.middleware.cost import CostMiddleware
from my_deepagent.monitoring.pricing import ModelPrice, PricingCache
# ---------------------------------------------------------------------------
# Helpers
# ---------------------------------------------------------------------------
def _make_pricing_cache(
model: str = "anthropic/claude-sonnet",
input_per_1k: float = 0.003,
output_per_1k: float = 0.015,
) -> PricingCache:
cache = PricingCache()
cache.set(
[
ModelPrice(
model=model,
input_per_1k_usd=input_per_1k,
output_per_1k_usd=output_per_1k,
context_length=200000,
)
]
)
return cache
def _make_response(input_tokens: int = 100, output_tokens: int = 50) -> MagicMock:
response = MagicMock()
response.usage_metadata = {"input_tokens": input_tokens, "output_tokens": output_tokens}
return response
# ---------------------------------------------------------------------------
# awrap_model_call — success path
# ---------------------------------------------------------------------------
@pytest.mark.asyncio
async def test_cost_middleware_records_correct_fields_on_success() -> None:
recorder = AsyncMock()
cache = _make_pricing_cache()
mw = CostMiddleware(
pricing=cache,
model_name="anthropic/claude-sonnet",
run_id=UUID("00000000-0000-0000-0000-000000000001"),
phase_id=UUID("00000000-0000-0000-0000-000000000002"),
persona_name="test-persona",
recorder=recorder,
)
response = _make_response(input_tokens=1000, output_tokens=500)
handler = AsyncMock(return_value=response)
request = MagicMock()
result = await mw.awrap_model_call(request, handler)
assert result is response
recorder.assert_awaited_once()
record: dict[str, Any] = recorder.call_args[0][0]
assert record["model"] == "anthropic/claude-sonnet"
assert record["input_tokens"] == 1000
assert record["output_tokens"] == 500
assert record["status"] == "ok"
assert record["error_code"] is None
assert record["latency_ms"] >= 0
# cost: (1000/1000 * 0.003) + (500/1000 * 0.015)
expected_cost = 0.003 * 1.0 + 0.015 * 0.5
assert record["cost_usd_total"] == pytest.approx(expected_cost)
@pytest.mark.asyncio
async def test_cost_middleware_no_recorder_is_noop() -> None:
cache = _make_pricing_cache()
mw = CostMiddleware(pricing=cache, model_name="anthropic/claude-sonnet")
response = _make_response()
handler = AsyncMock(return_value=response)
# Should not raise even with recorder=None
result = await mw.awrap_model_call(MagicMock(), handler)
assert result is response
# ---------------------------------------------------------------------------
# awrap_model_call — error path
# ---------------------------------------------------------------------------
@pytest.mark.asyncio
async def test_cost_middleware_records_error_on_handler_exception() -> None:
recorder = AsyncMock()
cache = _make_pricing_cache()
mw = CostMiddleware(
pricing=cache,
model_name="anthropic/claude-sonnet",
recorder=recorder,
)
handler = AsyncMock(side_effect=RuntimeError("timeout"))
with pytest.raises(RuntimeError, match="timeout"):
await mw.awrap_model_call(MagicMock(), handler)
recorder.assert_awaited_once()
record: dict[str, Any] = recorder.call_args[0][0]
assert record["status"] == "error"
assert record["error_code"] == "RuntimeError"
assert record["input_tokens"] == 0
assert record["output_tokens"] == 0
@pytest.mark.asyncio
async def test_cost_middleware_reraises_exception() -> None:
cache = _make_pricing_cache()
mw = CostMiddleware(pricing=cache, model_name="m", recorder=AsyncMock())
handler = AsyncMock(side_effect=ValueError("bad input"))
with pytest.raises(ValueError, match="bad input"):
await mw.awrap_model_call(MagicMock(), handler)
# ---------------------------------------------------------------------------
# cost computation via cache
# ---------------------------------------------------------------------------
@pytest.mark.asyncio
async def test_cost_zero_when_model_not_in_cache() -> None:
recorder = AsyncMock()
cache = PricingCache() # empty
mw = CostMiddleware(pricing=cache, model_name="unknown/model", recorder=recorder)
response = _make_response(input_tokens=1000, output_tokens=1000)
handler = AsyncMock(return_value=response)
await mw.awrap_model_call(MagicMock(), handler)
record = recorder.call_args[0][0]
assert record["cost_usd_total"] == 0.0