hermes-agent/tests/hermes_cli/test_managed_scope_writeguard.py
Ben 4f9e15df97 feat(managed-scope): guard writes to managed config/env keys
- set_config_value hard-rejects a managed config key (D2) and names the
  source, exiting non-zero.
- save_env_value / remove_env_value refuse a managed env key.
- save_config strips managed leaves from a bulk write (mechanical safety net)
  with a warning, so the unmanaged remainder still persists.
New _strip_dotted_keys helper drives the bulk-save pruning. All guards are
distinct from and layered after the existing is_managed() package-manager
write-lock.
2026-06-19 07:46:33 -07:00

110 lines
3.8 KiB
Python

"""Write-guard tests — managed keys can't be set/removed by the user."""
import pytest
@pytest.fixture
def homes(tmp_path, monkeypatch):
home = tmp_path / "home"
home.mkdir()
managed = tmp_path / "managed"
managed.mkdir()
monkeypatch.setenv("HERMES_HOME", str(home))
monkeypatch.setenv("HERMES_MANAGED_DIR", str(managed))
import hermes_cli.config as cfg
from hermes_cli import managed_scope
cfg._LOAD_CONFIG_CACHE.clear()
cfg._RAW_CONFIG_CACHE.clear()
managed_scope.invalidate_managed_cache()
(managed / "config.yaml").write_text(
"model:\n default: managed/model\n", encoding="utf-8"
)
managed_scope.invalidate_managed_cache()
return home, managed
def test_config_set_managed_key_rejected(homes, capsys):
from hermes_cli.config import set_config_value
with pytest.raises(SystemExit) as exc:
set_config_value("model.default", "user/override")
assert exc.value.code != 0
captured = capsys.readouterr()
assert "managed" in (captured.out + captured.err).lower()
def test_config_set_managed_key_does_not_write(homes):
from hermes_cli.config import set_config_value, read_raw_config
try:
set_config_value("model.default", "user/override")
except SystemExit:
pass
raw = read_raw_config()
assert raw.get("model", {}).get("default") != "user/override"
def test_config_set_unmanaged_key_still_works(homes):
from hermes_cli.config import set_config_value, read_raw_config
set_config_value("model.fallback", "user/fb") # not managed
assert read_raw_config().get("model", {}).get("fallback") == "user/fb"
# ── env write guards ─────────────────────────────────────────────────────────
@pytest.fixture
def env_homes(tmp_path, monkeypatch):
home = tmp_path / "home"
home.mkdir()
managed = tmp_path / "managed"
managed.mkdir()
monkeypatch.setenv("HERMES_HOME", str(home))
monkeypatch.setenv("HERMES_MANAGED_DIR", str(managed))
(managed / ".env").write_text(
"OPENAI_API_BASE=https://org.example/v1\n", encoding="utf-8"
)
from hermes_cli import managed_scope
managed_scope.invalidate_managed_cache()
return home, managed
def test_save_env_value_managed_key_rejected(env_homes, capsys):
from hermes_cli.config import save_env_value, get_env_path
save_env_value("OPENAI_API_BASE", "https://user.example/v1")
assert "managed" in capsys.readouterr().err.lower()
env_path = get_env_path()
body = env_path.read_text() if env_path.exists() else ""
assert "user.example" not in body
def test_remove_env_value_managed_key_rejected(env_homes, capsys):
from hermes_cli.config import remove_env_value
result = remove_env_value("OPENAI_API_BASE")
assert result is False
assert "managed" in capsys.readouterr().err.lower()
def test_save_env_value_unmanaged_key_still_works(env_homes):
from hermes_cli.config import save_env_value, get_env_value
save_env_value("SOME_OTHER_VALUE", "abc123")
assert get_env_value("SOME_OTHER_VALUE") == "abc123"
# ── bulk save strips managed leaves ──────────────────────────────────────────
def test_save_config_strips_managed_leaves(homes, capsys):
from hermes_cli.config import save_config, read_raw_config
# 'model.default' is managed (homes fixture); 'model.fallback' is not.
save_config({"model": {"default": "user/override", "fallback": "user/fb"}})
raw = read_raw_config()
assert raw.get("model", {}).get("default") != "user/override" # stripped
assert raw.get("model", {}).get("fallback") == "user/fb" # kept
assert "managed" in capsys.readouterr().err.lower()