hermes-agent/tests/hermes_cli/test_serve_command.py
Brooklyn Nicholson f0f8c84d1b feat(cli): make hermes serve a real headless backend
`serve` (added in #54568) reused cmd_dashboard wholesale, so it still
behaved like a dashboard: it ran a full vite build every launch, mounted
and served the SPA whenever a stray web_dist/ existed, printed
"Hermes Web UI →", and announced HERMES_DASHBOARD_READY. It's the headless
JSON-RPC/WS backend the desktop app and remote clients run — pure socket
clients that never load the browser SPA.

Mark serve with headless_backend=True (resolved once in cmd_dashboard) and:

- skip _build_web_ui entirely on the serve path
- export HERMES_SERVE_HEADLESS=1 so mount_spa() disables the SPA even when a
  dist is present — only the JSON-RPC/WS/API surface is reachable
- announce the bind ("Hermes backend listening on host:port") instead of a
  browser/auth-gated URL
- print a neutral HERMES_BACKEND_READY sentinel; dashboard keeps the legacy
  one and the desktop port-discovery regex matches either
- preserve serve across the named-profile re-exec so it can't rebuild as
  dashboard

`hermes dashboard` is unchanged (builds + serves the browser UI). Backward
compatible: old apps only ever spawn dashboard (legacy token + UI intact)
and never invoke serve; the ready-file side channel is name-agnostic. The
one behavior change is that a remote `hermes serve` no longer serves the
browser dashboard as a side effect — that's `hermes dashboard`'s job.

Tests: serve headless_backend contract, SPA-disabled-with-dist, the
HERMES_BACKEND_READY desktop parse (17/17 node), and the existing
serve/dashboard/web_server suites. AGENTS.md documents the behavior.
2026-06-30 17:58:52 -05:00

70 lines
2.5 KiB
Python

"""Contract for the headless ``hermes serve`` backend command.
``serve`` is what the desktop app and remote backends launch — the same gateway
as ``dashboard`` (shared handler) but always headless, and decoupled in name so
the desktop never invokes ``dashboard``. These tests pin that contract:
- ``serve`` routes to the same handler as ``dashboard``;
- ``serve`` is headless by default, ``dashboard`` is not;
- both expose the identical server-runtime flag surface.
"""
from __future__ import annotations
import argparse
from hermes_cli.subcommands.dashboard import build_dashboard_parser
def _dash(args): # sentinel handler — identity-compared, never invoked
return args
def _register(args):
return args
def _parser() -> argparse.ArgumentParser:
parser = argparse.ArgumentParser()
build_dashboard_parser(
parser.add_subparsers(dest="command"),
cmd_dashboard=_dash,
cmd_dashboard_register=_register,
)
return parser
def test_serve_routes_to_the_shared_dashboard_handler():
args = _parser().parse_args(["serve"])
assert args.func is _dash
def test_serve_is_headless_by_default_but_dashboard_is_not():
assert _parser().parse_args(["serve"]).no_open is True
assert _parser().parse_args(["dashboard"]).no_open is False
def test_serve_accepts_the_legacy_no_open_flag_as_a_noop():
# The desktop backend spawn (and old shells) may still pass --no-open;
# serve must tolerate it rather than erroring on an unknown argument.
assert _parser().parse_args(["serve", "--no-open"]).no_open is True
def test_serve_takes_the_same_runtime_flags_as_dashboard():
argv = ["--host", "0.0.0.0", "--port", "0", "--insecure", "--skip-build", "--isolated"]
serve = _parser().parse_args(["serve", *argv])
dash = _parser().parse_args(["dashboard", *argv])
for field in ("host", "port", "insecure", "skip_build", "isolated"):
assert getattr(serve, field) == getattr(dash, field)
def test_serve_supports_the_lifecycle_flags():
for flag in ("--stop", "--status"):
assert getattr(_parser().parse_args(["serve", flag]), flag.lstrip("-")) is True
def test_serve_is_a_headless_backend_but_dashboard_is_not():
# `headless_backend` is the flag cmd_dashboard reads to skip the web UI
# build; only `serve` carries it.
assert getattr(_parser().parse_args(["serve"]), "headless_backend", False) is True
assert getattr(_parser().parse_args(["dashboard"]), "headless_backend", False) is False