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--skip-build with a missing web_dist/index.html previously hard-failed with sys.exit(1) (issue #59288). The desktop launcher passes --build-mode skip on every boot, so a wiped or never-populated dist bricked the dashboard until the user manually rebuilt. Now the default-dist path logs a clear warning and attempts exactly ONE recovery build through the existing _build_web_ui path. If the recovery build also fails to produce index.html, the original fatal behavior is preserved with a clear message. A custom HERMES_WEB_DIST stays fail-fast: the build writes to the default dist location and cannot populate a caller-managed directory. Closes #59288
248 lines
7.9 KiB
Python
248 lines
7.9 KiB
Python
"""Regression tests: `hermes dashboard` validates HERMES_WEB_DIST before serving.
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A custom HERMES_WEB_DIST without --skip-build previously skipped BOTH the
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build and any validation, so the server started and served 404s with no
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obvious cause (same failure mode as issue #23817, reached via the env-var
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path instead of --skip-build). The env-var branch must now fail fast when
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the dist has no index.html, and proceed when it does.
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Design credit: PR #17845 (@Caelier).
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"""
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import sys
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import types
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import pytest
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@pytest.fixture()
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def main_mod():
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import hermes_cli.main as main
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return main
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def _args(**over):
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base = {
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"host": "127.0.0.1",
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"port": 0,
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"no_open": True,
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"open_profile": None,
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"skip_build": False,
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"headless_backend": False,
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"tui": False,
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}
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base.update(over)
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return types.SimpleNamespace(**base)
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def _wire_common(main_mod, monkeypatch):
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monkeypatch.setattr(
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"hermes_cli.profiles.get_active_profile_name", lambda: "default"
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)
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monkeypatch.setattr(main_mod, "_sync_bundled_skills_quietly", lambda: None)
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monkeypatch.setitem(sys.modules, "fastapi", types.SimpleNamespace())
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monkeypatch.setitem(sys.modules, "uvicorn", types.SimpleNamespace())
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monkeypatch.setitem(
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sys.modules,
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"hermes_logging",
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types.SimpleNamespace(setup_logging=lambda **_k: None),
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)
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monkeypatch.setitem(
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sys.modules,
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"hermes_cli.plugins",
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types.SimpleNamespace(discover_plugins=lambda: None),
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)
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monkeypatch.setattr(
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"hermes_cli.mcp_startup.start_background_mcp_discovery",
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lambda **_k: None,
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)
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def test_env_dist_without_index_exits(main_mod, monkeypatch, tmp_path, capsys):
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"""HERMES_WEB_DIST pointing at a dist with no index.html must exit 1,
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not start a server that 404s."""
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_wire_common(main_mod, monkeypatch)
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empty_dist = tmp_path / "empty_dist"
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empty_dist.mkdir()
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monkeypatch.setenv("HERMES_WEB_DIST", str(empty_dist))
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started = []
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monkeypatch.setitem(
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sys.modules,
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"hermes_cli.web_server",
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types.SimpleNamespace(start_server=lambda **k: started.append(k)),
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)
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builds = []
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monkeypatch.setattr(
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main_mod, "_build_web_ui", lambda *a, **k: builds.append(a) or True
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)
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with pytest.raises(SystemExit) as exc:
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main_mod.cmd_dashboard(_args())
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assert exc.value.code == 1
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assert started == []
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assert builds == [] # env var set -> build skipped, validation is the gate
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out = capsys.readouterr().out
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assert "HERMES_WEB_DIST" in out and str(empty_dist) in out
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def test_env_dist_with_index_starts_server(main_mod, monkeypatch, tmp_path):
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"""A valid HERMES_WEB_DIST (has index.html) proceeds to start_server
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without building."""
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_wire_common(main_mod, monkeypatch)
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dist = tmp_path / "dist"
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dist.mkdir()
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(dist / "index.html").write_text("<html></html>", encoding="utf-8")
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monkeypatch.setenv("HERMES_WEB_DIST", str(dist))
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started = []
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monkeypatch.setitem(
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sys.modules,
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"hermes_cli.web_server",
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types.SimpleNamespace(start_server=lambda **k: started.append(k)),
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)
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builds = []
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monkeypatch.setattr(
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main_mod, "_build_web_ui", lambda *a, **k: builds.append(a) or True
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)
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main_mod.cmd_dashboard(_args())
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assert len(started) == 1
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assert builds == []
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def test_env_dist_tilde_expanded_for_web_server(main_mod, monkeypatch, tmp_path):
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"""A '~/...' HERMES_WEB_DIST must be written back expanded so
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web_server's raw os.environ read serves the validated path."""
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_wire_common(main_mod, monkeypatch)
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home = tmp_path / "home"
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dist = home / "mydist"
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dist.mkdir(parents=True)
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(dist / "index.html").write_text("<html></html>", encoding="utf-8")
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monkeypatch.setenv("HOME", str(home))
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monkeypatch.setenv("HERMES_WEB_DIST", "~/mydist")
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monkeypatch.setitem(
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sys.modules,
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"hermes_cli.web_server",
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types.SimpleNamespace(start_server=lambda **k: None),
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)
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main_mod.cmd_dashboard(_args())
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import os
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assert os.environ["HERMES_WEB_DIST"] == str(dist)
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# ---------------------------------------------------------------------------
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# --skip-build recovery (issue #59288): a missing dist under --skip-build
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# should warn and attempt ONE recovery build via _build_web_ui before the
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# fatal exit, instead of hard-failing immediately.
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# ---------------------------------------------------------------------------
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def test_skip_build_missing_dist_attempts_one_recovery_build(
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main_mod, monkeypatch, tmp_path, capsys
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):
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"""--skip-build + missing index.html triggers exactly one recovery build;
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when the build produces a dist, the server starts."""
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_wire_common(main_mod, monkeypatch)
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monkeypatch.delenv("HERMES_WEB_DIST", raising=False)
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project_root = tmp_path / "proj"
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dist = project_root / "hermes_cli" / "web_dist"
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dist.mkdir(parents=True)
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monkeypatch.setattr(main_mod, "PROJECT_ROOT", project_root)
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started = []
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monkeypatch.setitem(
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sys.modules,
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"hermes_cli.web_server",
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types.SimpleNamespace(start_server=lambda **k: started.append(k)),
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)
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builds = []
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def fake_build(web_dir, *, fatal=False):
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builds.append((web_dir, fatal))
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(dist / "index.html").write_text("<html></html>", encoding="utf-8")
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return True
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monkeypatch.setattr(main_mod, "_build_web_ui", fake_build)
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main_mod.cmd_dashboard(_args(skip_build=True))
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assert len(builds) == 1 # exactly ONE recovery build
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assert builds[0][0] == project_root / "web"
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assert len(started) == 1
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out = capsys.readouterr().out
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assert "recovery build" in out.lower()
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def test_skip_build_recovery_build_failure_preserves_fatal_exit(
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main_mod, monkeypatch, tmp_path, capsys
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):
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"""When the recovery build also fails to produce a dist, the original
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fatal path is preserved: exit 1, clear message, server never starts."""
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_wire_common(main_mod, monkeypatch)
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monkeypatch.delenv("HERMES_WEB_DIST", raising=False)
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project_root = tmp_path / "proj"
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(project_root / "hermes_cli" / "web_dist").mkdir(parents=True)
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monkeypatch.setattr(main_mod, "PROJECT_ROOT", project_root)
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started = []
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monkeypatch.setitem(
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sys.modules,
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"hermes_cli.web_server",
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types.SimpleNamespace(start_server=lambda **k: started.append(k)),
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)
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builds = []
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monkeypatch.setattr(
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main_mod,
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"_build_web_ui",
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lambda web_dir, *, fatal=False: builds.append(web_dir) or False,
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)
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with pytest.raises(SystemExit) as exc:
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main_mod.cmd_dashboard(_args(skip_build=True))
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assert exc.value.code == 1
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assert len(builds) == 1 # attempted once, never retried
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assert started == []
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out = capsys.readouterr().out
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assert "--skip-build was passed but no web dist found" in out
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assert "recovery build did not produce a usable dist" in out
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def test_skip_build_custom_env_dist_missing_does_not_attempt_recovery(
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main_mod, monkeypatch, tmp_path, capsys
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):
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"""A custom HERMES_WEB_DIST is caller-managed: the recovery build writes
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to the default dist location and cannot populate it, so the env-var +
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--skip-build combination keeps the immediate fatal exit with no build."""
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_wire_common(main_mod, monkeypatch)
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empty_dist = tmp_path / "custom_dist"
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empty_dist.mkdir()
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monkeypatch.setenv("HERMES_WEB_DIST", str(empty_dist))
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started = []
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monkeypatch.setitem(
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sys.modules,
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"hermes_cli.web_server",
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types.SimpleNamespace(start_server=lambda **k: started.append(k)),
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)
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builds = []
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monkeypatch.setattr(
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main_mod, "_build_web_ui", lambda *a, **k: builds.append(a) or True
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)
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with pytest.raises(SystemExit) as exc:
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main_mod.cmd_dashboard(_args(skip_build=True))
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assert exc.value.code == 1
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assert builds == []
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assert started == []
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out = capsys.readouterr().out
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assert "--skip-build was passed but no web dist found" in out
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