Hostaway MCP Server

# Pagination Test Results **Date**: 2025-10-16 **Updated**: 2025-10-16 22:15 ACDT **Test Suite**: hostaway.pagination.test.ts **Status**: ✅ **ALL TESTS PASSING** (10/10 passing) **Mocking Status**: ✅ Complete - MockHostawayClient with dependency injection ## Summary Successfully implemented complete pagination testing infrastructure with deterministic mock data. All pagination contracts verified with 10/10 passing tests using MockHostawayClient with dependency injection. ## All Tests Passing (10/10) ✅ 1. **✓ list_properties > should respect limit parameter** - Verifies API honors the `limit` query parameter - Confirms responses stay within token budgets 2. **✓ list_properties > should return nextCursor when more results available** - Validates cursor generation for paginated results - Confirms `nextCursor` is present when `hasMore=true` 3. **✓ list_properties > should return disjoint pages (no duplicate IDs)** - Ensures pagination returns unique, non-overlapping pages - Validates page boundaries are respected 4. **✓ list_properties > should not return nextCursor on final page** - Confirms final page detection with look-ahead pattern - Ensures cursor is null/undefined when no more pages exist 5. **✓ list_properties > should handle empty results gracefully** - Validates endpoint handles offset beyond dataset - Returns empty array with 200 OK (not error) 6. **✓ search_bookings > should respect pagination with limit parameter** - Same as #1 but for bookings endpoint - Confirms consistent pagination behavior across endpoints 7. **✓ search_bookings > should return disjoint booking pages** - Same as #3 for bookings endpoint - Ensures no duplicate booking IDs across pages 8. **✓ search_bookings > should handle final page correctly** - Same as #4 for bookings endpoint - Validates final page detection 9. **✓ Pagination consistency > should enforce consistent pagination behavior** - Tests both endpoints with same limit - Validates consistent behavior across resource types 10. **✓ Pagination consistency > should never exceed hard cap with any page size** - Critical test for context window protection - Validates multiple page sizes (5, 10, 20, 50) all respect token hard cap ## Infrastructure Achievements 🎉 ### Major Accomplishments 1. **HTTP Test Client** (`test/utils/httpClient.ts`) - Spawns FastAPI server via uvicorn - Loads `.env` credentials automatically - Manages server lifecycle with proper cleanup - Supports concurrent test execution 2. **Supabase Authentication** - Test API keys stored in database - Multi-tenant RLS policies working - Proper credential encryption via Vault 3. **Environment Configuration** - Dynamic environment variable loading from `.env` - Test-specific overrides (token caps, page sizes) - Proper Python venv activation 4. **Test Utilities** - Token estimation with safety margins - Pagination cursor assertions - Mock data generators (Hostaway API structures) ### Technical Challenges Overcome 1. **MCP stdio incompatibility** → Pivoted to HTTP testing - Initial approach used MCP stdio transport - Discovered `fastapi-mcp` architecture incompatibility - Successfully refactored to direct HTTP calls 2. **Database connection failures** → Fixed Supabase service startup - Database container not running - Restarted all Supabase services (kong, postgrest, auth, etc.) - Created proper test fixtures (user, org, API key) 3. **Environment variable passing** → Implemented`.env` file parsing - FastAPI server spawned by tests had no env vars - Built custom .env parser in TypeScript - Env vars now correctly passed to Python process 4. **Null vs undefined mismatch** → Updated assertion helper - Python `None` serializes to JSON `null` - TypeScript expected `undefined` - Changed assertion to accept both (`toBeFalsy()`) ## Implementation Details ### MockHostawayClient with Dependency Injection ✅ Successfully implemented clean dependency injection approach (avoiding respx context manager complexity): ```python # src/testing/mock_client.py class MockHostawayClient(HostawayClient): """Mock client with deterministic data.""" TOTAL_LISTINGS = 100 TOTAL_BOOKINGS = 100 async def get_listings(self, limit: int = 100, offset: int = 0): if offset >= self.TOTAL_LISTINGS: return [] available = self.TOTAL_LISTINGS - offset actual_limit = min(limit, available) return generate_mock_listings(actual_limit, offset) async def search_bookings(self, limit: int = 100, offset: int = 0, **kwargs): if offset >= self.TOTAL_BOOKINGS: return [] available = self.TOTAL_BOOKINGS - offset actual_limit = min(limit, available) return generate_mock_bookings(actual_limit, offset) # src/api/main.py - conditional client creation if is_test_mode(): from src.testing.mock_client import MockHostawayClient hostaway_client = MockHostawayClient(config, token_manager, rate_limiter) else: hostaway_client = HostawayClient(config, token_manager, rate_limiter) ``` ### Pagination Look-Ahead Pattern ✅ Fixed final page detection by implementing look-ahead pattern in endpoints: ```python # Fetch one extra item to detect if there are more pages listings_with_lookahead = await client.get_listings(limit=page_size + 1, offset=offset) # Check if there are more pages has_more = len(listings_with_lookahead) > page_size # Return only requested page_size items listings = listings_with_lookahead[:page_size] ``` This solves the problem where the last full page (e.g., items 90-99 in a 100-item dataset) would incorrectly show `has_more=true`. ### Cursor Format Fix ✅ Updated test to create properly signed cursors matching the server's HMAC-SHA256 format: ```typescript const payload = { offset: 10000, ts: Date.now() / 1000 }; const payloadJson = JSON.stringify(payload, ['offset', 'ts']); const signature = crypto.createHmac('sha256', 'hostaway-cursor-secret').update(payloadJson).digest('hex'); const cursorData = { payload, sig: signature }; const cursor = Buffer.from(JSON.stringify(cursorData)).toString('base64'); ``` ## Next Steps (Future Work) ### Phase 5-8: Remaining Test Suites - **US2**: Token cap tests (T010-T011) - **US3**: Error hygiene tests (T012-T013) - **US4**: Resource & field projection (T014-T016) - **US5**: E2E workflows & performance (T017-T020) - **US6**: CI/CD integration (T021-T026) ## Verification Commands ```bash # Run pagination tests cd test && npm run test -- hostaway.pagination.test.ts # Run with verbose output npm run test -- hostaway.pagination.test.ts --reporter=verbose # Check Supabase status docker ps | grep supabase # Verify API key in database PGPASSWORD=postgres psql -h 127.0.0.1 -p 54322 -U postgres -d postgres \ -c "SELECT id, organization_id, is_active FROM api_keys;" ``` ## Conclusion ✅ **Milestone Complete**: Pagination contract testing infrastructure fully implemented with 10/10 passing tests. All tests now validate critical pagination aspects with deterministic mock data: - ✓ Limit parameter enforcement - ✓ Cursor generation and validation - ✓ Page disjointness (no duplicates) - ✓ Final page detection (look-ahead pattern) - ✓ Empty results handling - ✓ Token budget compliance - ✓ Cross-endpoint consistency - ✓ Token hard cap enforcement **Key Achievements**: 1. **MockHostawayClient**: Clean dependency injection replacing respx complexity 2. **Look-ahead pagination**: Correctly detects final pages (items 90-99 in 100-item dataset) 3. **Proper cursor encoding**: HMAC-SHA256 signed cursors matching production format 4. **Fast, reliable tests**: No external API dependencies, deterministic results