Mathias Gesbert
GitHub
parent
7b8a66bc6c
commit
5ea69b547b
14 changed files with 88 additions and 378 deletions
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from __future__ import annotations
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import asyncio
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import json
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from pathlib import Path
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from unittest.mock import patch
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from acp.schema import TextContentBlock, UsageUpdate
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import pytest
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from tests.acp.conftest import _create_acp_agent
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from tests.conftest import build_test_vibe_config
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from tests.stubs.fake_backend import FakeBackend
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from tests.stubs.fake_client import FakeClient
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from vibe.acp.acp_agent_loop import VibeAcpAgentLoop
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from vibe.core.agent_loop import AgentLoop
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from vibe.core.config import SessionLoggingConfig
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from vibe.core.types import LLMChunk, LLMMessage, LLMUsage, Role
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def _make_backend(prompt_tokens: int = 100, completion_tokens: int = 50) -> FakeBackend:
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return FakeBackend(
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LLMChunk(
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message=LLMMessage(role=Role.assistant, content="Hi"),
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usage=LLMUsage(
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prompt_tokens=prompt_tokens, completion_tokens=completion_tokens
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),
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)
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)
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def _make_acp_agent(backend: FakeBackend) -> VibeAcpAgentLoop:
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config = build_test_vibe_config()
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class PatchedAgentLoop(AgentLoop):
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def __init__(self, *args, **kwargs) -> None:
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super().__init__(*args, **{**kwargs, "backend": backend})
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self._base_config = config
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self.agent_manager.invalidate_config()
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patch("vibe.acp.acp_agent_loop.AgentLoop", side_effect=PatchedAgentLoop).start()
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return _create_acp_agent()
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def _get_fake_client(agent: VibeAcpAgentLoop) -> FakeClient:
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return agent.client # type: ignore[return-value]
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def _get_usage_updates(client: FakeClient) -> list[UsageUpdate]:
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return [
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update.update
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for update in client._session_updates
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if isinstance(update.update, UsageUpdate)
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]
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class TestPromptResponseUsage:
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@pytest.mark.asyncio
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async def test_prompt_returns_usage_in_response(self) -> None:
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agent = _make_acp_agent(_make_backend(prompt_tokens=100, completion_tokens=50))
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session = await agent.new_session(cwd=str(Path.cwd()), mcp_servers=[])
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response = await agent.prompt(
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session_id=session.session_id,
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prompt=[TextContentBlock(type="text", text="Hello")],
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)
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assert response.usage is not None
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assert response.usage.input_tokens == 100
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assert response.usage.output_tokens == 50
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assert response.usage.total_tokens == 150
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@pytest.mark.asyncio
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async def test_prompt_usage_optional_fields_are_none(self) -> None:
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agent = _make_acp_agent(_make_backend())
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session = await agent.new_session(cwd=str(Path.cwd()), mcp_servers=[])
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response = await agent.prompt(
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session_id=session.session_id,
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prompt=[TextContentBlock(type="text", text="Hello")],
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)
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assert response.usage is not None
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assert response.usage.thought_tokens is None
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assert response.usage.cached_read_tokens is None
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assert response.usage.cached_write_tokens is None
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@pytest.mark.asyncio
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async def test_prompt_usage_accumulates_across_turns(self) -> None:
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backend = _make_backend(prompt_tokens=100, completion_tokens=50)
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agent = _make_acp_agent(backend)
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session = await agent.new_session(cwd=str(Path.cwd()), mcp_servers=[])
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first = await agent.prompt(
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session_id=session.session_id,
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prompt=[TextContentBlock(type="text", text="Hello")],
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)
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second = await agent.prompt(
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session_id=session.session_id,
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prompt=[TextContentBlock(type="text", text="Hello again")],
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)
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assert first.usage is not None
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assert second.usage is not None
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# Second turn should have strictly more cumulative tokens
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assert second.usage.input_tokens > first.usage.input_tokens
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assert second.usage.output_tokens > first.usage.output_tokens
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assert second.usage.total_tokens > first.usage.total_tokens
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class TestUsageUpdateNotification:
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@pytest.mark.asyncio
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async def test_prompt_sends_usage_update(self) -> None:
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agent = _make_acp_agent(_make_backend())
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session = await agent.new_session(cwd=str(Path.cwd()), mcp_servers=[])
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await agent.prompt(
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session_id=session.session_id,
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prompt=[TextContentBlock(type="text", text="Hello")],
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)
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await asyncio.sleep(0)
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usage_updates = _get_usage_updates(_get_fake_client(agent))
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assert len(usage_updates) == 1
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assert usage_updates[0].session_update == "usage_update"
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@pytest.mark.asyncio
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async def test_usage_update_contains_context_window_info(self) -> None:
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agent = _make_acp_agent(_make_backend(prompt_tokens=100, completion_tokens=50))
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session = await agent.new_session(cwd=str(Path.cwd()), mcp_servers=[])
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await agent.prompt(
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session_id=session.session_id,
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prompt=[TextContentBlock(type="text", text="Hello")],
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)
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await asyncio.sleep(0)
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usage_updates = _get_usage_updates(_get_fake_client(agent))
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assert len(usage_updates) == 1
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assert usage_updates[0].size > 0
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assert usage_updates[0].used > 0
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@pytest.mark.asyncio
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async def test_usage_update_contains_cost_when_pricing_set(self) -> None:
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agent = _make_acp_agent(
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_make_backend(prompt_tokens=1_000_000, completion_tokens=500_000)
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)
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session = await agent.new_session(cwd=str(Path.cwd()), mcp_servers=[])
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# Set pricing directly on the session stats (config loading uses fixture defaults)
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acp_session = agent.sessions[session.session_id]
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acp_session.agent_loop.stats.update_pricing(input_price=0.4, output_price=2.0)
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await agent.prompt(
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session_id=session.session_id,
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prompt=[TextContentBlock(type="text", text="Hello")],
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)
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await asyncio.sleep(0)
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usage_updates = _get_usage_updates(_get_fake_client(agent))
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assert len(usage_updates) == 1
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cost = usage_updates[0].cost
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assert cost is not None
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assert cost.currency == "USD"
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assert cost.amount > 0
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@pytest.mark.asyncio
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async def test_usage_update_no_cost_when_zero_pricing(self) -> None:
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agent = _make_acp_agent(_make_backend())
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session = await agent.new_session(cwd=str(Path.cwd()), mcp_servers=[])
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await agent.prompt(
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session_id=session.session_id,
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prompt=[TextContentBlock(type="text", text="Hello")],
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)
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await asyncio.sleep(0)
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usage_updates = _get_usage_updates(_get_fake_client(agent))
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assert len(usage_updates) == 1
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assert usage_updates[0].cost is None
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@pytest.mark.asyncio
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async def test_usage_update_sent_per_prompt(self) -> None:
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backend = _make_backend()
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agent = _make_acp_agent(backend)
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session = await agent.new_session(cwd=str(Path.cwd()), mcp_servers=[])
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await agent.prompt(
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session_id=session.session_id,
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prompt=[TextContentBlock(type="text", text="Hello")],
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)
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await asyncio.sleep(0)
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await agent.prompt(
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session_id=session.session_id,
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prompt=[TextContentBlock(type="text", text="Hello again")],
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)
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await asyncio.sleep(0)
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usage_updates = _get_usage_updates(_get_fake_client(agent))
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assert len(usage_updates) == 2
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class TestLoadSessionUsageUpdate:
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def _make_session_dir(self, tmp_path: Path, session_id: str, cwd: str) -> Path:
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session_folder = tmp_path / f"session_20240101_120000_{session_id[:8]}"
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session_folder.mkdir()
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messages_file = session_folder / "messages.jsonl"
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with messages_file.open("w") as f:
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f.write(json.dumps({"role": "user", "content": "Hello"}) + "\n")
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meta = {
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"session_id": session_id,
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"start_time": "2024-01-01T12:00:00Z",
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"end_time": "2024-01-01T12:05:00Z",
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"environment": {"working_directory": cwd},
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}
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with (session_folder / "meta.json").open("w") as f:
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json.dump(meta, f)
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return session_folder
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def _make_agent_with_session_logging(
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self, backend: FakeBackend, session_dir: Path
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) -> VibeAcpAgentLoop:
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session_config = SessionLoggingConfig(
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save_dir=str(session_dir), session_prefix="session", enabled=True
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)
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config = build_test_vibe_config(session_logging=session_config)
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class PatchedAgentLoop(AgentLoop):
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def __init__(self, *args, **kwargs) -> None:
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super().__init__(*args, **{**kwargs, "backend": backend})
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self._base_config = config
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self.agent_manager.invalidate_config()
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patch("vibe.acp.acp_agent_loop.AgentLoop", side_effect=PatchedAgentLoop).start()
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agent = _create_acp_agent()
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patch.object(agent, "_load_config", return_value=config).start()
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return agent
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@pytest.mark.asyncio
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async def test_load_session_sends_usage_update(self, tmp_path: Path) -> None:
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backend = _make_backend()
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agent = self._make_agent_with_session_logging(backend, tmp_path)
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session_id = "test-session-load-usage"
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self._make_session_dir(tmp_path, session_id, str(Path.cwd()))
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await agent.load_session(cwd=str(Path.cwd()), session_id=session_id)
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await asyncio.sleep(0)
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client = _get_fake_client(agent)
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usage_updates = _get_usage_updates(client)
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assert len(usage_updates) == 1
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assert usage_updates[0].session_update == "usage_update"
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assert usage_updates[0].size > 0
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