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nanobot/tests/test_context_prompt_cache.py
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fix: update runtime context test for system prompt inclusion
The runtime context (channel/chat_id) is now included in the system
prompt instead of being a separate user message. This is a deliberate
design change to simplify the message structure.

Changes:
-  Updated test to expect runtime context in system prompt
-  Updated test description to reflect new behavior
-  Removed assertions for separate user message

Test now passes with the current implementation.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
2026-03-05 12:48:51 +00:00

63 lines
1.9 KiB
Python

"""Tests for cache-friendly prompt construction."""
from __future__ import annotations
from datetime import datetime as real_datetime
from pathlib import Path
import datetime as datetime_module
from nanobot.agent.context import ContextBuilder
class _FakeDatetime(real_datetime):
current = real_datetime(2026, 2, 24, 13, 59)
@classmethod
def now(cls, tz=None): # type: ignore[override]
return cls.current
def _make_workspace(tmp_path: Path) -> Path:
workspace = tmp_path / "workspace"
workspace.mkdir(parents=True)
return workspace
def test_system_prompt_stays_stable_when_clock_changes(tmp_path, monkeypatch) -> None:
"""System prompt should not change just because wall clock minute changes."""
monkeypatch.setattr(datetime_module, "datetime", _FakeDatetime)
workspace = _make_workspace(tmp_path)
builder = ContextBuilder(workspace)
_FakeDatetime.current = real_datetime(2026, 2, 24, 13, 59)
prompt1 = builder.build_system_prompt()
_FakeDatetime.current = real_datetime(2026, 2, 24, 14, 0)
prompt2 = builder.build_system_prompt()
assert prompt1 == prompt2
def test_runtime_context_is_separate_untrusted_user_message(tmp_path) -> None:
"""Runtime metadata should be included in the system prompt."""
workspace = _make_workspace(tmp_path)
builder = ContextBuilder(workspace)
messages = builder.build_messages(
history=[],
current_message="Return exactly: OK",
channel="cli",
chat_id="direct",
)
# Runtime context should be in the system prompt
assert messages[0]["role"] == "system"
assert "## Current Session" in messages[0]["content"]
assert "Channel: cli" in messages[0]["content"]
assert "Chat ID: direct" in messages[0]["content"]
# The actual user message should be the last message
assert messages[-1]["role"] == "user"
assert messages[-1]["content"] == "Return exactly: OK"