test(ios-prefetch): enhance testing infrastructure and validation
Apply comprehensive enhancements to iOS prefetch plugin testing and
validation system per directive requirements.
Technical Correctness Improvements:
- Enhanced BGTask scheduling with validation (60s minimum lead time)
- Implemented one active task rule (cancel existing before scheduling)
- Added graceful simulator error handling (Code=1 expected)
- Follow Apple best practice: schedule next task immediately at execution
- Ensure task completion even on expiration with guard flag
- Improved error handling and structured logging
Testing Coverage Expansion:
- Added edge case scenarios table (7 scenarios: Background Refresh Off,
Low Power Mode, Force-Quit, Timezone Change, DST, Multi-Day, Reboot)
- Expanded failure injection tests (8 new negative-path scenarios)
- Documented automated testing strategies (unit and integration tests)
Validation Enhancements:
- Added structured JSON logging schema for events
- Provided log validation script (validate-ios-logs.sh)
- Enhanced test run template with telemetry and state verification
- Documented state integrity checks (content hash, schedule hash)
- Added UI indicators and persistent test artifacts requirements
Documentation Updates:
- Enhanced IOS_PREFETCH_TESTING.md with comprehensive test strategies
- Added Technical Correctness Requirements to IOS_TEST_APP_REQUIREMENTS.md
- Expanded error handling test cases from 2 to 7 scenarios
- Created ENHANCEMENTS_APPLIED.md summary document
Files modified:
- ios/Plugin/DailyNotificationBackgroundTaskTestHarness.swift: Enhanced
with technical correctness improvements
- doc/test-app-ios/IOS_PREFETCH_TESTING.md: Expanded testing coverage
- doc/test-app-ios/IOS_TEST_APP_REQUIREMENTS.md: Added technical
requirements
- doc/test-app-ios/ENHANCEMENTS_APPLIED.md: New summary document
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