test(react): Add stream-error fallback, retry focus tests

[stefashkaa]

Description

• What does this PR do?

  • Add new test cases for React package

• Why is this change needed?

  • To follow min test coverage % in CI

Type of Change

• Bug fix (non-breaking)
• New feature (non-breaking)
• Breaking change
• Documentation update
• Tests
• Maintenance

Testing

• pnpm test:unit:coverage

Screenshots (if applicable)

• N/A

Checklist

• Code follows project style guidelines
• Self-review completed
• Comments added for complex code
• Documentation updated
• No new warnings generated
• Tests added/updated
• All tests passing

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Summary by CodeRabbit

• Tests
  • Expanded automated coverage for localized fallback messages when stream errors have no message, focus retention on the Stop control during busy retries, and cleanup when a widget is unmounted before a pending update completes.
  • These checks help verify that error handling, focus behavior, and widget lifecycle remain consistent in these scenarios.

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1 Skipped Deployment

Project	Deployment	Actions	Updated
context7-widget	Skipped		Sep 30, 2026 10:03pm UTC

[chatgpt-codex-connector]

Codex Review Summary

This comment shows the latest Codex review activity on this pull request.

Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-09-30T22:05:19.112718Z	ff5bb87	PR opened

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Configuration used: Organization UI

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Run ID: 34188999-6065-4c9a-8fc6-513b7cd45410

📥 Commits

Reviewing files that changed from the base of the PR and between 2375d0e and ff5bb87.

📒 Files selected for processing (1)

• packages/react/tests/unit/context7-widget.test.tsx

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

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[Copilot]

Copilot review overview

🟢 Approval recommended

The change is test-only and each new assertion was verified to match the existing engine, component, and hook behavior with no production code affected.

Review effort: Balanced
Findings: None

What changed in this PR

This PR adds three unit tests to the React package (@desource/context7-widget-react) to raise/maintain the minimum test-coverage threshold enforced in CI. The tests exercise previously uncovered branches of the widget's conversation and lifecycle logic. I verified each assertion against the underlying implementation (packages/core/src/engine.ts, packages/react/src/components/Context7Widget.tsx, and packages/react/src/hooks/useContext7Widget.ts) and all three tests are consistent with actual behavior.

Changes:

• Add a test asserting that an empty-message stream error resolves to { error: '', status: 'error' } and renders the localized errorFallback label (.c7-message--error).
• Extend the composition/focus test to confirm that calling retry() while a request is in flight keeps focus on the Stop control and does not trigger a second fetch.
• Add a hook lifecycle regression test confirming an owned widget is not recreated when unmount() runs before a queued prop-update microtask (guarded by !containerRef.current).

File	Description
packages/​react/​tests/​unit/​context7-widget.test.tsx	Adds three unit tests (stream-error fallback, retry focus retention, unmount-before-queued-update) covering engine error handling, focus management, and hook lifecycle guards.

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