Deciding whether the OS can back glass needs os.release(), but every
Hermes window runs its preload with sandbox: true, where require is a
polyfill limited to electron, events, timers and url. The node:os import
threw before contextBridge ran, so window.hermesDesktop was never defined
and the app booted straight into "Desktop IPC bridge is unavailable".
Main already computes both verdicts, so preload asks for them over a
synchronous channel instead. No reply degrades to no glass, which is an
ordinary opaque window rather than a page thinned over nothing.
* nix: add `cage` to devShell
* test(desktop): add pre-filled sessions support
Exports createSandbox, writeMockProviderConfig, writeEnvFile,
buildAppEnv, findElectron, and launchDesktop from fixtures.ts so
specs can compose their own seeded-backend fixtures without duplicating
the sandbox/config/launch logic.
* test(desktop): auto-fail e2e tests on error banner
Adds a shared test fixture (e2e/test.ts) that wraps @playwright/test's
page with an error-banner guard. When any [role="alert"] element
(error notification toast) appears in the DOM during a test, the test
fails with the error message text.
The guard uses:
- A MutationObserver (injected via addInitScript) that watches for
[role="alert"] elements appearing at any point during the test
- A final DOM scan in afterEach for alerts still visible at teardown
- Deduplication so the same error text only fires once
All existing e2e specs updated to import { test, expect } from './test'
instead of '@playwright/test'. No per-spec setup needed — the guard is
auto-installed on every page via the extended fixture.
This catches issues like the "resume failed" error banner that can
appear during session loading — previously the test would pass while
an error toast was silently visible on screen.
* fix(state): parse tool_calls JSON string before re-serializing
_insert_message_rows and append_message both do json.dumps(tool_calls)
to serialize the field for SQLite storage. But when tool_calls arrives
as a JSON string (from import_sessions / export_session, which store it
as TEXT), json.dumps double-encodes it — wrapping the already-serialized
string in quotes and escaping the inner quotes.
When _rows_to_conversation later does json.loads(row['tool_calls']),
the double-encoded string parses back to a plain string (not a list).
_history_to_messages then iterates this string character-by-character,
calling tc.get('function', {}) on each char — 'str' object has no
attribute 'get'.
This was a pre-existing bug (on main), but only triggered by the
import_sessions path (the live agent always passes tool_calls as a
Python list). The e2e error-banner guard caught it via the 'Resume
failed' notification toast.
Fix: in both append_message and _insert_message_rows, parse tool_calls
with json.loads first if it's a string, then re-serialize.
* fix(desktop): exempt boot-failure from error guard
- boot-failure: add allowErrorBanners() beforeEach — these tests
deliberately trigger boot errors, so error toasts are expected
- test.ts: export allowErrorBanners() opt-out + reset flag in afterEach
Adds a full desktop Playwright E2E suite that launches the Electron app
against a mock inference server, exercising the full boot chain:
electron -> hermes serve -> mock provider -> renderer
Includes:
- Mock OpenAI-compatible inference server (mock-server.ts)
- Shared fixtures with sandbox isolation (credentials, HERMES_HOME,
userData, fixed window-state.json for reproducible screenshots)
- Test specs: boot, boot-failure, onboarding, mock-backend-setup, chat,
and packaged-app launch
- Visual regression: expectVisualSnapshot() wraps toHaveScreenshot in
try/catch so diffs are reported without failing the test suite
- CI workflow: xvfb at 1280x1024, baseline cache from main
(--update-snapshots on main, compare on PRs), step summary table with
diff/actual/expected image links, dedicated visual-diffs artifact
- dev:mock script for local fake-provider development
- test:e2e:visual + test:e2e:update-snapshots scripts using cage
- .gitignore: *-snapshots/ (baselines cached in CI, not committed)
Brooklyn Nicholson