Fix Errors.test.tsx failing with Reanimated 4.6.0

[m-bert]

Description

Since Reanimated 4.6.0 (software-mansion/react-native-reanimated#10107), importing react-native-reanimated under Jest throws during module evaluation:

    [Reanimated] `setCSSEventHandler` is not available in JSReanimated.
      at initializeReanimatedModule (src/initializers.native.ts:22)
      at Object.<anonymous> (src/index.ts:11)

Under Jest, Reanimated selects its JSReanimated module (IS_JEST check in reanimatedModuleInstance.native.ts), whose setCSSEventHandler stub throws, and initializers.native.ts calls it unconditionally as an import side effect. Our reanimatedWrapper catches the error and silently falls back to Reanimated = undefined.

This PR mocks reanimatedWrapper in Errors.test.tsx (same pattern as runOnJSReanimatedHandlers.test.tsx), which makes the suite independent of whether the real Reanimated can be imported under Jest. The mock additionally provides useComposedEventHandler, which InterceptingGestureDetector calls.

Test plan

• yarn test — 19/19 suites, 159/159 tests pass (Errors.test.tsx was failing on main before this change)

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Reviewing files that changed from the base of the PR and between cdc5c59 and ebf1ff6.

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• packages/react-native-gesture-handler/src/__tests__/Errors.test.tsx

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📝 Walkthrough

Summary by CodeRabbit

• Bug Fixes
  • Improved gesture test reliability by preventing animation-library import failures.
  • Ensured gesture detection tests consistently run through the intended animation pathway.

Walkthrough

The change adds a test-only reanimatedWrapper mock to support gesture tests without Reanimated import failures. The mock covers handler, event, shared-value, and gesture-state APIs, while Worklets remains unavailable.

Changes

Gesture test support

Layer / File(s)	Summary
Mock Reanimated gesture APIs packages/react-native-gesture-handler/src/__tests__/Errors.test.tsx	The test setup mocks the Reanimated APIs used by gesture tests, including handler state, event callbacks, shared-value handling, and gesture-state updates. Worklets is set to undefined.

Merge Risk: ⚪ Minimal · up to ebf1f

This change isolates the affected Jest test from Reanimated import behavior without altering production code; no actionable merge-blocking risk remains beyond normal checks and review.

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly identifies the test failure and its cause: Reanimated 4.6.0. It accurately describes the primary change.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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Pull request overview

This PR stabilizes the Errors.test.tsx Jest suite against react-native-reanimated@4.6.0+ import-time failures by mocking reanimatedWrapper, ensuring tests continue to exercise the Reanimated detector path without depending on Reanimated’s real module evaluation under Jest.

Changes:

• Mock ../handlers/gestures/reanimatedWrapper in Errors.test.tsx to avoid importing real Reanimated under Jest.
• Extend the mock to include useComposedEventHandler, which is required by InterceptingGestureDetector.

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