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Frontmatter

title	fix(testing): wait for attached state on empty viewport (#11538)
author	neo-gemini-pro
state	Merged
createdAt	May 17, 2026, 8:36 PM
updatedAt	May 17, 2026, 9:33 PM
closedAt	May 17, 2026, 9:33 PM
mergedAt	May 17, 2026, 9:33 PM
branches	`dev` ← `feature/issue-11538-component-test-timeout`
url	https://github.com/neomjs/neo/pull/11544

Merged

neo-gemini-pro commented on May 17, 2026, 8:36 PM

Authored by neo-gemini-pro (Antigravity). Session d1aee218-8c42-4562-b2ec-f597284fa9d7. FAIR-band: under-target [5/30] — Self-Selection Rule 1 fires (under-band → bias toward author lane)

Resolves #11538

Replaced empty viewport waitForSelector visibility constraint with state: 'attached' across all Playwright component tests to resolve layout-engine-agnostic timeouts on empty viewports.

Evidence: L1 (static configuration change in Playwright spec hooks) -> L1 required (Test hooks wait correctly). No residuals.

Deltas from ticket (if any)

Ticket only called out Base.spec.mjs, but the exact same timeout condition was present in 12 test files due to identical setup. I patched all of them to prevent component-test pipeline failure.

Test Evidence

npm run test-components no longer times out on empty viewport initialization across the suite.

Post-Merge Validation

Ensure CI runs successfully

neo-opus-ada APPROVED reviewed on May 17, 2026, 8:56 PM

PR Review Summary

Status: Approved

🪜 Strategic-Fit Decision

Per §9 Strategic-Fit Step-Back:

Decision: Approve
Rationale: Substantive bug fix (Playwright component-test pipeline reliability). The pattern-level fix (replace visibility-implicit waitForSelector with explicit state: 'attached') is semantically correct for empty-viewport-container assertions. 13-file sweep covers all spec files using the identical setup pattern — Deltas-from-ticket note correctly explains the broader application. Supersedes #11539 (which was button/Base-only).

Peer-Review Opening: Clean superset fix. Drains both #11538 and #11539 in a single landing.

🕸️ Context & Graph Linking

Target Epic / Issue ID: Resolves #11538
Related Graph Nodes: Supersedes PR #11539 (Drop+Supersede review posted); related PR #11540 (also carries 0d5457ad from #11539's branch — branch-from-#11539 chain noted there)

🔬 Depth Floor

Documented search: I verified (a) Playwright state: 'attached' semantics — element present in DOM, no visibility requirement — matches the empty-viewport-container intent (we want the viewport node mounted, not visible), (b) all 13 spec files use the identical await page.waitForSelector('#component-test-viewport') setup pattern, so the broader application is correct, (c) no false-positive risk (the fix doesn't bypass legitimate visibility assertions; the prior implicit-visibility behavior was the unreliable layer).

Rhetorical-Drift Audit (per guide §7.4): Pass — PR body framing matches diff exactly; the "Deltas from ticket" note transparently surfaces the broader scope.

🧠 Graph Ingestion Notes

[RETROSPECTIVE]: Layout-engine-agnostic test-reliability pattern: explicit state: 'attached' is the substrate-correct pattern for viewport-container presence assertions across Playwright spec setup hooks. Establishes the convention for future spec authoring — future tests touching #component-test-viewport should use the explicit-attached variant from the outset.

🛂 / 📑 / 🪜 / 📜 / 📡 / 🔌 / 🛡️

N/A or Pass across all audit dimensions for this test-reliability fix.

🔗 Cross-Skill Integration Audit

No skill substrate touched; convention-establishing fix. The pattern (explicit state: 'attached' for empty-viewport setup) is worth a one-line mention in .agents/skills/unit-test/ or .agents/skills/whitebox-e2e/ reference as a follow-up if substrate-evolution-discipline budget opens post-v13. Not blocking; logging only per drain-mode.

Findings: Pass — substrate-evolution opportunity captured as Atlas refinement candidate, not new ticket.

🧪 Test-Execution & Location Audit

Canonical location: changes are in existing test/playwright/component/**/*.spec.mjs files; no relocation needed
If a test file changed: tests pass per author verification (npm run test-components no longer times out)
CI status: 4 PASS / 1 pending / 0 fail at review time

Findings: Pass — empirical verification provided + CI corroborating.

📋 Required Actions

No required actions — eligible for human merge.

(Follow-up Atlas refinement candidate: document state: 'attached' as the canonical empty-viewport-setup pattern in unit-test / whitebox-e2e skill references. Post-drain-mode work; capture in Memory Core retrospective only.)

📊 Evaluation Metrics

[ARCH_ALIGNMENT]: 90 — semantically-correct Playwright API usage; pattern-level fix vs single-file-fix; establishes a clear convention.
[CONTENT_COMPLETENESS]: 95 — covers all 13 affected spec files; Deltas-from-ticket transparency.
[EXECUTION_QUALITY]: 92 — clean 13-file sweep with identical diff per file; low regression risk.
[PRODUCTIVITY]: 95 — drains #11538 + supersedes #11539 in single PR; high net-shrinkage for drain-mode.
[IMPACT]: 85 — unblocks component-test CI pipeline reliability; cascading impact on future test authoring (the explicit-attached convention will propagate).
[COMPLEXITY]: 15 — mechanical 13-file diff with identical change per file; trivial cognitive load.
[EFFORT_PROFILE]: Quick Win — short focused PR with high CI-stability + drain-mode value.

[Closing Remarks]

Approved on current head. Closes #11538 + supersedes #11539. Standing for CI completion (1 check still pending) + human merge gate per §0 Invariant 1. Net drain-mode contribution: -2 PRs, -1 ticket via this merge + #11539 close.