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https://github.com/NousResearch/hermes-agent.git
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283381b1ce
Follow-up to PR #23824. Adds two correctness fixes on top of the contributor's salvaged commit: 1. Stale-dist fallback no longer gated on `fatal=False`. `cmd_dashboard` passes `fatal=True` and is the primary scenario this fallback is for (issue #23817 — Windows Scheduled Task at logon). The previous gate meant the fallback never fired in the case it was designed for. 2. `--skip-build` now verifies the dist actually exists before starting the server. Without this, a misconfigured pre-build would launch the dashboard pointing at a missing dist and silently serve 404s. We now exit 1 with a clear "pre-build first: cd web && npm run build" message, and on success print which dist directory is being used. Verified end-to-end on Linux: - build fails + stale dist (fatal=True) -> fallback fires - build fails + no dist (fatal=True) -> exit 1 with stderr surfaced - build fails + stale dist (fatal=False) -> fallback fires - --skip-build + missing dist -> exit 1 with clear guidance - --skip-build + valid dist -> 'Skipping web UI build...'
210 lines
9.2 KiB
Python
210 lines
9.2 KiB
Python
"""Tests for _web_ui_build_needed — staleness check for the web UI dist.
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Critical invariant: the Vite build outputs to hermes_cli/web_dist/
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(vite.config.ts: outDir: "../hermes_cli/web_dist"), NOT web/dist/.
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The sentinel must be checked in the correct output directory or the
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freshness check is a no-op and the OOM rebuild always runs.
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"""
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import os
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import time
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from pathlib import Path
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from unittest.mock import patch
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import pytest
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from hermes_cli.main import _web_ui_build_needed, _build_web_ui, _run_npm_install_deterministic
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def _touch(path: Path, offset: float = 0.0) -> None:
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path.parent.mkdir(parents=True, exist_ok=True)
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path.touch()
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if offset:
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t = time.time() + offset
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os.utime(path, (t, t))
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def _make_web_dir(tmp_path: Path) -> tuple[Path, Path]:
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"""Return (web_dir, dist_dir) matching real repo layout."""
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web_dir = tmp_path / "web"
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web_dir.mkdir()
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(web_dir / "package.json").touch()
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dist_dir = tmp_path / "hermes_cli" / "web_dist"
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return web_dir, dist_dir
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class TestWebUIBuildNeeded:
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def test_returns_true_when_dist_missing(self, tmp_path):
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web_dir, _ = _make_web_dir(tmp_path)
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assert _web_ui_build_needed(web_dir) is True
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def test_returns_false_when_vite_manifest_fresh(self, tmp_path):
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web_dir, dist_dir = _make_web_dir(tmp_path)
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_touch(web_dir / "src" / "App.tsx", offset=-10)
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_touch(dist_dir / ".vite" / "manifest.json")
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assert _web_ui_build_needed(web_dir) is False
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def test_returns_true_when_source_newer_than_manifest(self, tmp_path):
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web_dir, dist_dir = _make_web_dir(tmp_path)
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_touch(dist_dir / ".vite" / "manifest.json", offset=-10)
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_touch(web_dir / "src" / "App.tsx")
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assert _web_ui_build_needed(web_dir) is True
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def test_falls_back_to_index_html_when_manifest_missing(self, tmp_path):
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web_dir, dist_dir = _make_web_dir(tmp_path)
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_touch(web_dir / "src" / "main.ts", offset=-10)
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_touch(dist_dir / "index.html")
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assert _web_ui_build_needed(web_dir) is False
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def test_web_dist_dir_not_web_dist_subdir(self, tmp_path):
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"""Regression: sentinel must be in hermes_cli/web_dist/, NOT web/dist/."""
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web_dir, dist_dir = _make_web_dir(tmp_path)
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_touch(web_dir / "src" / "App.tsx", offset=-10)
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# Place manifest in wrong location (web/dist/) — should NOT count as fresh
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wrong_dist = web_dir / "dist" / ".vite" / "manifest.json"
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_touch(wrong_dist)
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# Correct location is empty → still needs build
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assert _web_ui_build_needed(web_dir) is True
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def test_returns_true_when_package_lock_newer_than_dist(self, tmp_path):
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web_dir, dist_dir = _make_web_dir(tmp_path)
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_touch(dist_dir / ".vite" / "manifest.json", offset=-10)
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_touch(web_dir / "package-lock.json")
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assert _web_ui_build_needed(web_dir) is True
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def test_returns_true_when_vite_config_newer_than_dist(self, tmp_path):
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web_dir, dist_dir = _make_web_dir(tmp_path)
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_touch(dist_dir / ".vite" / "manifest.json", offset=-10)
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_touch(web_dir / "vite.config.ts")
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assert _web_ui_build_needed(web_dir) is True
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def test_ignores_node_modules(self, tmp_path):
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web_dir, dist_dir = _make_web_dir(tmp_path)
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# package.json older than manifest; only node_modules file is newer
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_touch(web_dir / "package.json", offset=-20)
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_touch(dist_dir / ".vite" / "manifest.json", offset=-10)
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_touch(web_dir / "node_modules" / "react" / "index.js")
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assert _web_ui_build_needed(web_dir) is False
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def test_ignores_dist_subdir_under_web(self, tmp_path):
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web_dir, dist_dir = _make_web_dir(tmp_path)
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# package.json older than manifest; only web/dist file is newer
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_touch(web_dir / "package.json", offset=-20)
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_touch(dist_dir / ".vite" / "manifest.json", offset=-10)
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_touch(web_dir / "dist" / "assets" / "index.js")
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assert _web_ui_build_needed(web_dir) is False
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class TestBuildWebUISkipsWhenFresh:
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def test_skips_npm_when_dist_is_fresh(self, tmp_path):
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web_dir, dist_dir = _make_web_dir(tmp_path)
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_touch(dist_dir / ".vite" / "manifest.json")
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with patch("hermes_cli.main.shutil.which", return_value="/usr/bin/npm"), \
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patch("hermes_cli.main.subprocess.run") as mock_run:
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result = _build_web_ui(web_dir)
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assert result is True
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mock_run.assert_not_called()
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def test_runs_npm_when_dist_missing(self, tmp_path):
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web_dir, _ = _make_web_dir(tmp_path)
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mock_cp = __import__("subprocess").CompletedProcess([], 0, stdout=b"", stderr=b"")
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with patch("hermes_cli.main.shutil.which", return_value="/usr/bin/npm"), \
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patch("hermes_cli.main.subprocess.run", return_value=mock_cp) as mock_run:
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result = _build_web_ui(web_dir)
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assert result is True
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assert mock_run.call_count == 2 # npm install + npm run build
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def test_npm_install_uses_utf8_replace_output_decoding(self, tmp_path):
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web_dir, _ = _make_web_dir(tmp_path)
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(web_dir / "package-lock.json").write_text("{}", encoding="utf-8")
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mock_cp = __import__("subprocess").CompletedProcess([], 0, stdout="", stderr="")
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with patch("hermes_cli.main.subprocess.run", return_value=mock_cp) as mock_run:
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result = _run_npm_install_deterministic("/usr/bin/npm", web_dir)
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assert result.returncode == 0
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_, kwargs = mock_run.call_args
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assert kwargs["text"] is True
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assert kwargs["encoding"] == "utf-8"
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assert kwargs["errors"] == "replace"
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def test_web_build_uses_utf8_replace_output_decoding(self, tmp_path):
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web_dir, _ = _make_web_dir(tmp_path)
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mock_cp = __import__("subprocess").CompletedProcess([], 0, stdout="", stderr="")
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with patch("hermes_cli.main.shutil.which", return_value="/usr/bin/npm"), \
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patch("hermes_cli.main.subprocess.run", side_effect=[mock_cp, mock_cp]) as mock_run:
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result = _build_web_ui(web_dir)
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assert result is True
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_, build_kwargs = mock_run.call_args_list[1]
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assert build_kwargs["text"] is True
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assert build_kwargs["encoding"] == "utf-8"
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assert build_kwargs["errors"] == "replace"
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class TestBuildWebUIRetryAndStaleFallback:
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"""Coverage for the retry + stale-dist fallback added in #23824 / issue #23817."""
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def test_retries_build_once_on_failure(self, tmp_path):
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web_dir, _ = _make_web_dir(tmp_path)
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Subprocess = __import__("subprocess")
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# install: success; build attempt 1: fail; build attempt 2: success
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install_ok = Subprocess.CompletedProcess([], 0, stdout="", stderr="")
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build_fail = Subprocess.CompletedProcess([], 1, stdout="", stderr="EPERM")
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build_ok = Subprocess.CompletedProcess([], 0, stdout="", stderr="")
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with patch("hermes_cli.main.shutil.which", return_value="/usr/bin/npm"), \
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patch("hermes_cli.main._time.sleep") as mock_sleep, \
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patch("hermes_cli.main.subprocess.run",
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side_effect=[install_ok, build_fail, build_ok]) as mock_run:
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result = _build_web_ui(web_dir)
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assert result is True
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assert mock_run.call_count == 3 # install + build + retry
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mock_sleep.assert_called_once_with(3)
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def test_falls_back_to_stale_dist_when_retry_also_fails(self, tmp_path, capsys):
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web_dir, dist_dir = _make_web_dir(tmp_path)
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# Stale dist exists but is older than source
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_touch(dist_dir / "index.html", offset=-100)
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_touch(web_dir / "src" / "App.tsx") # newer source -> build_needed=True
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Subprocess = __import__("subprocess")
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install_ok = Subprocess.CompletedProcess([], 0, stdout="", stderr="")
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build_fail = Subprocess.CompletedProcess([], 1, stdout="", stderr="vite ENOMEM")
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with patch("hermes_cli.main.shutil.which", return_value="/usr/bin/npm"), \
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patch("hermes_cli.main._time.sleep"), \
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patch("hermes_cli.main.subprocess.run",
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side_effect=[install_ok, build_fail, build_fail]):
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result = _build_web_ui(web_dir, fatal=True)
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# MUST return True (serve stale) — issue #23817 — even with fatal=True,
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# because cmd_dashboard passes fatal=True and is the primary caller.
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assert result is True
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out = capsys.readouterr().out
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assert "serving stale dist as fallback" in out
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assert "vite ENOMEM" in out # stderr surfaced to user
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def test_hard_fails_when_no_dist_to_fall_back_to(self, tmp_path, capsys):
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web_dir, _ = _make_web_dir(tmp_path)
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Subprocess = __import__("subprocess")
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install_ok = Subprocess.CompletedProcess([], 0, stdout="", stderr="")
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build_fail = Subprocess.CompletedProcess([], 1, stdout="", stderr="vite ENOMEM")
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with patch("hermes_cli.main.shutil.which", return_value="/usr/bin/npm"), \
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patch("hermes_cli.main._time.sleep"), \
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patch("hermes_cli.main.subprocess.run",
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side_effect=[install_ok, build_fail, build_fail]):
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result = _build_web_ui(web_dir, fatal=True)
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assert result is False
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out = capsys.readouterr().out
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assert "Web UI build failed" in out
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assert "vite ENOMEM" in out
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assert "Run manually" in out
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