hermes-agent/tests/hermes_cli/test_context_switch_guard.py
kshitijk4poor 1ca29723f0 fix(cli): log instead of swallow preflight-warning errors; consistent TUI warning field
Follow-up to the salvaged preflight-compression warning:
- Replace silent `except Exception: pass` at all 5 guard call sites
  (cli.py x2, gateway/slash_commands.py x2, tui_gateway/server.py) with
  `logger.debug(...)` so signature drift in the guard helper isn't hidden.
- tui_gateway/server.py: set the confirm dict's `warning` field to the
  merged message (was bare expensive-model text) so it matches
  `confirm_message` for any future consumer reading `warning`.
- Add trailing newlines to the two new files.
2026-06-21 16:31:56 +05:30

105 lines
3.1 KiB
Python

"""Tests for hermes_cli.context_switch_guard."""
from __future__ import annotations
from types import SimpleNamespace
from hermes_cli.context_switch_guard import merge_preflight_compression_warning
from hermes_cli.model_switch import ModelSwitchResult
def _result(*, model: str = "small-model") -> ModelSwitchResult:
return ModelSwitchResult(
success=True,
new_model=model,
target_provider="openrouter",
provider_changed=False,
api_key="k",
base_url="https://example.com/v1",
api_mode="chat_completions",
provider_label="openrouter",
model_info={"context_length": 32_000},
)
def _compressor(monkeypatch, *, context_length: int = 200_000):
from agent.context_compressor import ContextCompressor
monkeypatch.setattr(
"agent.context_compressor.get_model_context_length",
lambda *a, **k: context_length,
)
return ContextCompressor(
model="big-model",
threshold_percent=0.5,
protect_first_n=3,
protect_last_n=20,
quiet_mode=True,
config_context_length=context_length,
)
def test_no_warning_when_below_new_threshold(monkeypatch):
monkeypatch.setattr(
"hermes_cli.context_switch_guard.resolve_display_context_length",
lambda *a, **k: 32_000,
)
cc = _compressor(monkeypatch)
cc.last_prompt_tokens = 10_000
agent = SimpleNamespace(
context_compressor=cc,
compression_enabled=True,
conversation_history=[],
base_url="",
api_key="",
)
result = _result()
merge_preflight_compression_warning(result, agent=agent)
assert not result.warning_message
def test_warns_when_estimate_exceeds_new_threshold(monkeypatch):
monkeypatch.setattr(
"hermes_cli.context_switch_guard.resolve_display_context_length",
lambda *a, **k: 32_000,
)
monkeypatch.setattr(
"hermes_cli.context_switch_guard._estimate_tokens",
lambda *a, **k: 90_000,
)
cc = _compressor(monkeypatch)
agent = SimpleNamespace(
context_compressor=cc,
compression_enabled=True,
conversation_history=[],
base_url="",
api_key="",
)
result = _result()
merge_preflight_compression_warning(result, agent=agent)
assert result.warning_message
assert "preflight compression" in result.warning_message
assert "shrinks" in result.warning_message
def test_merge_appends_to_existing_warning(monkeypatch):
monkeypatch.setattr(
"hermes_cli.context_switch_guard._estimate_tokens",
lambda *a, **k: 90_000,
)
monkeypatch.setattr(
"hermes_cli.context_switch_guard.resolve_display_context_length",
lambda *a, **k: 32_000,
)
cc = _compressor(monkeypatch)
agent = SimpleNamespace(
context_compressor=cc,
compression_enabled=True,
base_url="",
api_key="",
)
result = _result()
result.warning_message = "expensive"
merge_preflight_compression_warning(result, agent=agent)
assert "expensive" in result.warning_message
assert "preflight compression" in result.warning_message