docs(05-03): complete act()-warning elimination plan

- SUMMARY.md: userEvent v14 migration + vi.useFakeTimers() for ReviewStep - STATE.md: advanced to completed 05-03, added patterns as decisions - ROADMAP.md: phase 5 now 4/4 plans complete (Complete status) - REQUIREMENTS.md: TECH-05 marked complete
2026-03-30 11:44:59 +02:00
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+---
+phase: 05-tech-debt
+plan: "03"
+subsystem: testing
+tags: [vitest, userEvent, testing-library, act-warnings, fake-timers]
+
+# Dependency graph
+requires:
+  - phase: 05-tech-debt
+    provides: "BackendSelectionStep and ReviewStep test infrastructure from Plans 01-02"
+provides:
+  - "act()-safe test interactions in BackendSelectionStep.test.tsx using userEvent v14"
+  - "act()-safe timer handling in ReviewStep.test.tsx using vi.useFakeTimers()"
+affects: [05-tech-debt, 06-new-backends, 07-validation-ux]
+
+# Tech tracking
+tech-stack:
+  added: []
+  patterns:
+    - "userEvent.setup() + await user.click/type per test body (not module level)"
+    - "vi.useFakeTimers() in beforeEach + vi.useRealTimers() in afterEach"
+
+key-files:
+  created: []
+  modified:
+    - src/components/wizard/BackendSelectionStep.test.tsx
+    - src/components/wizard/ReviewStep.test.tsx
+
+key-decisions:
+  - "Replace fireEvent.click with await user.click (userEvent.setup() per test body) — eliminates act() wrapping requirement for async React Hook Form validation"
+  - "Keep fireEvent.change for input value setting replaced by user.clear() + user.type() — user.type() appends so clear() first required"
+  - "vi.useFakeTimers() in beforeEach freezes OutputBlock setTimeout(setCopied(false), 2000) preventing post-test act() warnings"
+
+patterns-established:
+  - "userEvent pattern: const user = userEvent.setup() inside it() body, never at module level"
+  - "Fake timers pattern: vi.useFakeTimers() in beforeEach, vi.useRealTimers() in afterEach"
+
+requirements-completed: [TECH-05]
+
+# Metrics
+duration: 3min
+completed: 2026-03-30
+---
+
+# Phase 5 Plan 03: Act() Warning Elimination Summary
+
+**Migrated BackendSelectionStep.test.tsx to userEvent v14 and added vi.useFakeTimers() to ReviewStep.test.tsx, eliminating all act() warnings from both test suites**
+
+## Performance
+
+- **Duration:** 3 min
+- **Started:** 2026-03-30T07:40:33Z
+- **Completed:** 2026-03-30T07:43:41Z
+- **Tasks:** 2
+- **Files modified:** 2
+
+## Accomplishments
+- Replaced all `fireEvent.click` / `fireEvent.change` calls in BackendSelectionStep.test.tsx with `userEvent.setup()` + `await user.click()` / `await user.type()`
+- Added `vi.useFakeTimers()` to ReviewStep's `beforeEach` and `vi.useRealTimers()` to a new `afterEach` block
+- Full suite: 104 tests passing across 12 test files with zero act() warnings and zero TypeScript errors
+
+## Task Commits
+
+Each task was committed atomically:
+
+1. **Task 1: Migrate BackendSelectionStep.test.tsx from fireEvent to userEvent** - `9b6d8a8` (feat)
+2. **Task 2: Fix ReviewStep act() warnings with vi.useFakeTimers** - `913cbe8` (feat)
+
+**Plan metadata:** (docs commit — see final commit)
+
+## Files Created/Modified
+- `src/components/wizard/BackendSelectionStep.test.tsx` - Replaced fireEvent import with userEvent; 5 tests converted to async with userEvent.setup() pattern
+- `src/components/wizard/ReviewStep.test.tsx` - Added afterEach to imports, vi.useFakeTimers() in beforeEach, new afterEach(() => vi.useRealTimers())
+
+## Decisions Made
+- Used `user.clear()` before `user.type()` in all input tests — userEvent.type() appends to existing value, so clear is required to avoid stale default values contaminating typed content
+- Kept `fireEvent` removed entirely from BackendSelectionStep.test.tsx (not just partially replaced) — cleaner import, no risk of future misuse
+- Added `vi.useFakeTimers()` to the existing `beforeEach` block (not a new one) per plan specification — avoids multiple beforeEach hooks
+
+## Deviations from Plan
+
+None - plan executed exactly as written.
+
+## Issues Encountered
+
+None — both migrations were straightforward. All 10 BackendSelectionStep tests and all 15 ReviewStep tests passed on first run after migration.
+
+## User Setup Required
+
+None - no external service configuration required.
+
+## Next Phase Readiness
+- TECH-05 requirement satisfied: CI test output is now clean with zero act() warnings
+- All 5 TECH-0x requirements (TECH-01 through TECH-05) are verified green in the full test suite
+- Phase 05-tech-debt test infrastructure is fully act()-safe — patterns established for future test files in phases 6 and 7
+
+---
+*Phase: 05-tech-debt*
+*Completed: 2026-03-30*
+
+## Self-Check: PASSED
+
+- `src/components/wizard/BackendSelectionStep.test.tsx` - FOUND
+- `src/components/wizard/ReviewStep.test.tsx` - FOUND
+- `.planning/phases/05-tech-debt/05-03-SUMMARY.md` - FOUND
+- Commit `9b6d8a8` (Task 1) - FOUND
+- Commit `913cbe8` (Task 2) - FOUND