[antosubash]

Summary

Browser e2e coverage for the Inertia v3 client features that no framework page exercises today. Before this PR, tests/e2e covered page URLs, titles, i18n, error pages and mutating flows. Deferred props, once props, merge, infinite scroll, error bags, history encryption, WhenVisible, polling, prefetch and the asset-version reload were tested only at the protocol level, if at all.

The fixtures are ported from the inertia_lab feature lab (a fresh smpy new app) that also produced #818.

Fixture pages (dev host only)

• host/e2e_inertia/ defines routes under /__e2e/inertia.
  • Every route requires Authenticated().
  • host/main.py mounts them only when settings.is_development, which is the mode the CI e2e-smoke job runs in. host/tests/test_e2e_inertia_gating.py proves a 404 outside development and a 401 for anonymous users.
  • Probe counters at /_probes let the tests prove which lazy loaders ran.
• The pages are host/client_app/pages/E2eInertia/*.tsx, marked i18n-exempt as fixtures.
  • pages.ts globs them only under import.meta.env.DEV, so production bundles drop them. Verified with a vite build: no fixture chunk.

Tests (tests/e2e/inertia/, directory-scoped conftest)

The conftest provides a signed-in page that fails on any console or page error, and an autouse probe reset. Existing e2e tests keep Playwright's plain page. The tests cover:

• Partial reloads: only, except, and a dotted only.
• Deferred props: groups and rescue.
• Merge: merge, prepend, deep_merge, match_on, and reset.
• Once props: cache reuse across visits, expiry and explicit refresh.
• Infinite scroll: the URL page param, no duplicate items, and reset.
• useForm: the default bag and a named errorBag. The JSON-body validation case is marked xfail, not strict; fix(hosting,inertia): Inertia body validation redirects back with field errors; faster first loads #818 fixes it.
• Redirects: 302→303 after PUT/PATCH/DELETE, an empty 200 redirecting back, back(), the fragment 409 and the external location 409.
• History: encryptHistory, clearHistory, and preserveFragment across a redirect, plus a control that loses the hash without the flag. The test was verified failing when the flag is removed.
• Visibility, polling and prefetch: WhenVisible, usePoll, and prefetch on hover.
• Asset versions: a stale X-Inertia-Version gives a 409 and a full reload.

Verification

• tests/e2e (full, local stack on 8411/5411): 96 passed, 1 xfailed (before the last two test-only commits); the history file was re-run after them: 6 passed.
• make lint ✓, make test-js ✓ (891), host/tests ✓ (38), make test-py ✓.
  • test_clean_target_is_not_in_repo fails locally only when the sandbox leaves a /tmp/.git placeholder; it passes once that is removed.
• /ship: Codex correctness review (2 passes) and a Sonnet maintainability review. Fixes made:
  • fixtures moved to a directory conftest, which drops a ruff F811 ignore;
  • fixture pages excluded from production builds;
  • E2E_USERNAME honoured;
  • the preserveFragment test made meaningful.

https://claude.ai/code/session_01FXHA3ZJ5EgoJN4zXTAhBR2

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Codex Review Summary

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Review	Status	Commit	Review trigger
🔒 Security Review	✅ Completed 2026-11-04T15:06:03.065471Z	956de1d	PR opened

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