hermes-agent/tests/hermes_cli/test_nous_hermes_non_agentic.py
ismell0992-afk e77f135ed8 fix(cli): narrow Nous Hermes non-agentic warning to actual hermes-3/-4 models
The startup warning that Nous Research Hermes 3 & 4 models are not agentic
fired on any model whose name contained "hermes" anywhere, via a plain
substring check. That false-positived on unrelated local Modelfiles such
as `hermes-brain:qwen3-14b-ctx16k` — a tool-capable Qwen3 wrapper that
happens to live under a custom "hermes" tag namespace — making the warning
noise for legitimate setups.

Replace the substring check with a narrow regex anchored on `^`, `/`, or
`:` boundaries that only matches the real Hermes-3 / Hermes-4 chat family
(e.g. `NousResearch/Hermes-3-Llama-3.1-70B`, `hermes-4-405b`,
`openrouter/hermes3:70b`). Consolidate into a single helper
`is_nous_hermes_non_agentic()` in `hermes_cli.model_switch` so the CLI
and the canonical check don't drift, and route the duplicate inline site
in `cli.HermesCLI._print_warnings()` through the helper.

Add a parametrized test covering positive matches (real Hermes-3/-4
names) and a broad set of negatives (custom Modelfiles, Qwen/Claude/GPT,
older Nous-Hermes-2 families, bare "hermes", empty string, and the
"brain-hermes-3-impostor" boundary case).
2026-04-13 04:33:52 -07:00

84 lines
2.6 KiB
Python

"""Tests for the Nous-Hermes-3/4 non-agentic warning detector.
Prior to this check, the warning fired on any model whose name contained
``"hermes"`` anywhere (case-insensitive). That false-positived on unrelated
local Modelfiles such as ``hermes-brain:qwen3-14b-ctx16k`` — a tool-capable
Qwen3 wrapper that happens to live under the "hermes" tag namespace.
``is_nous_hermes_non_agentic`` should only match the actual Nous Research
Hermes-3 / Hermes-4 chat family.
"""
from __future__ import annotations
import pytest
from hermes_cli.model_switch import (
_HERMES_MODEL_WARNING,
_check_hermes_model_warning,
is_nous_hermes_non_agentic,
)
@pytest.mark.parametrize(
"model_name",
[
"NousResearch/Hermes-3-Llama-3.1-70B",
"NousResearch/Hermes-3-Llama-3.1-405B",
"hermes-3",
"Hermes-3",
"hermes-4",
"hermes-4-405b",
"hermes_4_70b",
"openrouter/hermes3:70b",
"openrouter/nousresearch/hermes-4-405b",
"NousResearch/Hermes3",
"hermes-3.1",
],
)
def test_matches_real_nous_hermes_chat_models(model_name: str) -> None:
assert is_nous_hermes_non_agentic(model_name), (
f"expected {model_name!r} to be flagged as Nous Hermes 3/4"
)
assert _check_hermes_model_warning(model_name) == _HERMES_MODEL_WARNING
@pytest.mark.parametrize(
"model_name",
[
# Kyle's local Modelfile — qwen3:14b under a custom tag
"hermes-brain:qwen3-14b-ctx16k",
"hermes-brain:qwen3-14b-ctx32k",
"hermes-honcho:qwen3-8b-ctx8k",
# Plain unrelated models
"qwen3:14b",
"qwen3-coder:30b",
"qwen2.5:14b",
"claude-opus-4-6",
"anthropic/claude-sonnet-4.5",
"gpt-5",
"openai/gpt-4o",
"google/gemini-2.5-flash",
"deepseek-chat",
# Non-chat Hermes models we don't warn about
"hermes-llm-2",
"hermes2-pro",
"nous-hermes-2-mistral",
# Edge cases
"",
"hermes", # bare "hermes" isn't the 3/4 family
"hermes-brain",
"brain-hermes-3-impostor", # "3" not preceded by /: boundary
],
)
def test_does_not_match_unrelated_models(model_name: str) -> None:
assert not is_nous_hermes_non_agentic(model_name), (
f"expected {model_name!r} NOT to be flagged as Nous Hermes 3/4"
)
assert _check_hermes_model_warning(model_name) == ""
def test_none_like_inputs_are_safe() -> None:
assert is_nous_hermes_non_agentic("") is False
# Defensive: the helper shouldn't crash on None-ish falsy input either.
assert _check_hermes_model_warning("") == ""