199de92c51
* perf: warm feature catalogs in the background after first paint Prompt groups and MCP server/tool queries no longer fire on the app startup path. A catalog warmup store releases them after first paint on browser idle, staggered with jitter so a fleet of clients does not burst the API all at once. Panels opened before warmup activates their catalog immediately and fall back to their existing loading states. The prompts list endpoints now also run their independent access lookups in parallel instead of in three serial rounds. * perf: gate MCP icon observers and re-arm warmup across sessions MCP icon/name observers mounted from rendered messages now wait for the warmup gate like every other server-catalog consumer, so conversations with MCP tool calls no longer pull the server list onto the first-render path. The warmup schedule resets on logout so a second login in the same tab warms on its own stagger instead of releasing every catalog at once. Panel mount activations now require a visible sidebar, since a persisted active panel stays mounted while hidden. * perf: void stale warmup callbacks and gate the agent panel tools query Reset now bumps a generation captured by every idle callback and its stagger timer, so callbacks pending across a logout can no longer release catalogs into the next session. The agent form's MCP tools query keeps its own readiness gate so a hidden persisted panel cannot pull the tools request ahead of its stagger once the server list resolves. * perf: reset warmup on Root unmount and honor the insights route collapse Root can unmount in the same render that flips authentication on logout, so the warmup effect now resets from its cleanup as well as the unauthenticated branch. Panel activations mirror UnifiedSidebar's panelExpanded condition, treating the insights route as collapsed instead of reading the raw sidebar atom. * test: re-expand the approval tool card the saved message remounts The helper opened the card once and then waited on its body. Saving the response swaps the placeholder message id for the persisted one, which rekeys every part in the turn: the card remounts collapsed, its body unmounts, and the output assertion waits out its timeout against a disclosure nothing is going to reopen. The redis transport lane pays a round trip per stream event, so its finalization lands late enough to catch the helper mid-assertion. Wait for the closing model turn before expanding anything, then re-open the group and the card on each attempt until the scoped output is on screen. * Update AgentPanelContext.tsx import order --------- Co-authored-by: Danny Avila <danny@librechat.ai> |
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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.