e0d5e11cdf
* ⏱️ feat: Show Elapsed Time Under the Streaming Response A minimalist elapsed-time indicator (5s, then 1m 5s) occupies the footer slot the hover actions vacate while a response generates, anchored to a per-index submission-start timestamp so remounts (new-conversation id hydration, navigation) never reset it. The once-per-second tick is component-local state, so streaming rows never re-render on its account. * 🧭 fix: Keep the Original Elapsed Baseline When Reattaching a Stream Codex round 1: resume-on-load restamped the anchor at reattach time, so navigating away from a still-streaming conversation and back restarted the reading at 0s — the exact reset the atom exists to prevent. Resume paths now leave the anchor alone: a same-session return keeps its ask baseline, and a reload (atom empty) falls back to the indicator's mount time, which is what the stamp produced anyway. * 🪗 fix: Scope the Elapsed Timer to Its Own Generation, Localized and Spoken Codex round 2, all four findings: - The anchor is cleared on every terminal path (final, error, abort fallback), and resume-on-load only fills an empty one — so a run another client started never inherits a stale baseline, while a same-session reattach still keeps its original start. - The indicator additionally requires the newest sibling position: latestMessageId follows the selected branch, so a settled older sibling paged to mid-regeneration satisfied the latest+submitting gate and got a counting timer under settled content. - Visible digits now come from the shared run-step duration formatter (Intl.NumberFormat per locale), replacing the raw-number interpolations. - The compact reading is aria-hidden with a spoken 'N seconds elapsed' equivalent beside it, per the house duration-label pattern; still no aria-live, so the tick never announces. |
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|---|---|---|
| .. | ||
| benchmarks | ||
| benchmarks-navigation | ||
| benchmarks-reasoning | ||
| bombadil | ||
| config | ||
| fixtures/deployment-skills/e2e-deployment-skill | ||
| perf | ||
| recordings | ||
| setup | ||
| specs | ||
| config.local.example.ts | ||
| jestSetup.js | ||
| playwright.config.a11y.ts | ||
| playwright.config.benchmark.ts | ||
| playwright.config.bombadil.ts | ||
| playwright.config.local.ts | ||
| playwright.config.mermaid.ts | ||
| playwright.config.mock.ts | ||
| playwright.config.navigation-perf.ts | ||
| playwright.config.real.ts | ||
| playwright.config.reasoning-perf.ts | ||
| playwright.config.redis.ts | ||
| playwright.config.ts | ||
| README.md | ||
| types.ts | ||
LibreChat e2e
The mock e2e profile is the safest default for generated tests. It starts LibreChat with e2e/config/librechat.e2e.yaml, injects an in-process fake LLM (via LIBRECHAT_TEST_RUN_HOOK), creates an authenticated e2e user, and avoids real provider credentials.
Stream Stores and Shards
The mock profile uses the in-memory generation stream store by default. To exercise the same browser scenarios through a real Redis job store and pub/sub transport, start Redis on port 6379 and run:
npm run e2e:mock:redis
Memory mode explicitly disables Redis. Redis mode defaults to database 15 with a LibreChatE2E key prefix, and fails closed: the test server pings Redis and verifies that the generation job manager did not silently fall back to memory. Override REDIS_URI or E2E_REDIS_KEY_PREFIX when needed.
Pull request CI runs the complete mock suite in memory mode across three shards, plus a focused Redis transport suite. The Redis suite covers streaming fidelity, steering, interrupts, resumptions, HITL approvals, completion, thread folding, model icons, and usage:
npx playwright test --config=e2e/playwright.config.mock.ts --shard=1/3
npm run e2e:mock:redis:transport
The nightly schedule and manual workflow dispatch run the complete mock suite in both stream modes across two shards per mode. Every shard keeps one worker so tests do not contend for its authenticated user and database.
Property-based browser testing
Bombadil explores randomized sequences across the core chat loop, message branches, parallel multi-conversation responses, model changes, reloads, and sidebar conversation lifecycle operations:
npm run e2e:bombadil
Set BOMBADIL_TIME_LIMIT for longer local or scheduled runs. Failures leave a
reproducible trace under e2e/.generated/bombadil-output; rerun it with:
BOMBADIL_REPRODUCE=e2e/.generated/bombadil-output npm run e2e:bombadil:run
Reproducing a real violation is expected to fail the Playwright test. Before a
new run overwrites the active output, the harness archives it under
e2e/.generated/bombadil-history/. Reproduction can diverge when streaming
timing changes; Bombadil reports that explicitly.
The harness uses the credential-free mock-LLM profile, so exploration never sends billable provider requests.
CI runs the broad property exploration for five minutes in the non-blocking
Bombadil Property Exploration workflow. If a property fails, download the
bombadil-reproduction-* artifact into
e2e/.generated/bombadil-output/, then reproduce it locally:
BOMBADIL_REPRODUCE=e2e/.generated/bombadil-output npm run e2e:bombadil:run
The accompanying bombadil-diagnostics-* artifact contains the captured CI log,
Playwright HTML report, and Playwright test results. A Bombadil failure produces
a workflow warning but does not block merge.
The default instruments inline JavaScript only because instrumenting LibreChat's
full Vite bundle can exceed Bombadil's driver timeout during stateful runs. Set
BOMBADIL_INSTRUMENT_JAVASCRIPT=files,inline for shorter coverage-guided
experiments.
The branch reload, fork submission, model/conversation, HITL pause/resume, and mid-run steering lifecycle properties can be run independently:
npm run e2e:bombadil:branch-reload
npm run e2e:bombadil:fork-lifecycle
npm run e2e:bombadil:model-lifecycle
npm run e2e:bombadil:hitl
npm run e2e:bombadil:steering
These focused commands are diagnostic properties: they exit nonzero when they
reproduce a product invariant violation. Reproduce a focused trace with its
matching :run script and output directory, for example:
BOMBADIL_REPRODUCE=e2e/.generated/bombadil-output-hitl npm run e2e:bombadil:hitl:run
HITL drives a real ask_user_question checkpoint through the answer/resume
controller, reloads while the question is paused, answers it once, and reloads
the completed conversation. Steering submits an in-flight steer during a slow
MCP-backed run, checks that it moves exactly once from the composer anchor into
the response at the tool boundary, and reloads the applied state. The model
lifecycle property is the passing control. The branch reload and fork
properties preserve their minimal failing traces.
Recording Tests
Use Playwright codegen when you want to turn an exploratory browser session into a draft test:
npm run e2e:record
That command builds the app, starts the LibreChat test server (with an in-process fake LLM) when needed, writes e2e/storageState.json, and opens Playwright codegen at /c/new. The npm script uses http://localhost:3333 so it does not collide with a normal dev server on 3080. Raw recordings are written to e2e/recordings/ and ignored by git.
For a real local LibreChat config instead of the mock profile:
npm run e2e:record:local
Useful direct options:
node e2e/setup/record.js --url=http://localhost:3080/c/new
node e2e/setup/record.js --profile=local --no-output
node e2e/setup/record.js --auth-only
node e2e/setup/record.js --output=e2e/recordings/settings-draft.spec.ts
LLM-Assisted Loop
- Start
npm run e2e:record. - Let the LLM use Computer Use to operate the headed Playwright browser.
- Stop codegen after the workflow is captured.
- Move the useful parts from
e2e/recordings/into a committed spec undere2e/specs/mock/. - Replace brittle generated selectors with role, label, text, or
data-testidlocators. - Add assertions that prove the behavior, not just the clicked path.
- Run the finished spec with
npm run e2e:mock -- <spec name>.
Generated recordings are a draft, not the final test. The committed version should use the shared helpers in e2e/specs/mock/helpers.ts where possible, wait on network or visible UI state instead of fixed sleeps, and keep test data deterministic.