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wiki/TESTING.md
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# Testing & Migration Guide
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## Overview
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This guide covers:
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1. Migrating existing cache to compressed format
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2. Running the test suite
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3. Understanding test results
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## Step 1: Migrate Cache to Compressed Format
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If you have an existing database with uncompressed entries (from before compression was added), run the migration script:
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```bash
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python migrate_compress_cache.py
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```
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### What it does:
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- Finds all cache entries where data is uncompressed
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- Compresses them using zlib (level 9)
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- Reports compression statistics and space saved
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- Verifies all entries are compressed
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### Expected output:
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```
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Cache Compression Migration Tool
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============================================================
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Initial database size: 1024.56 MB
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Found 1134 uncompressed cache entries
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Starting compression...
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Compressed 100/1134 entries... (78.3% reduction so far)
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Compressed 200/1134 entries... (79.1% reduction so far)
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...
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============================================================
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MIGRATION COMPLETE
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============================================================
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Entries compressed: 1134
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Original size: 1024.56 MB
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Compressed size: 198.34 MB
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Space saved: 826.22 MB
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Compression ratio: 80.6%
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============================================================
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VERIFICATION:
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Compressed entries: 1134
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Uncompressed entries: 0
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✓ All cache entries are compressed!
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Final database size: 1024.56 MB
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Database size reduced by: 0.00 MB
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✓ Migration complete! You can now run VACUUM to reclaim disk space:
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sqlite3 /mnt/okcomputer/output/cache.db 'VACUUM;'
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```
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### Reclaim disk space:
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After migration, the database file still contains the space used by old uncompressed data. To actually reclaim the disk space:
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```bash
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sqlite3 /mnt/okcomputer/output/cache.db 'VACUUM;'
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```
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This will rebuild the database file and reduce its size significantly.
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## Step 2: Run Tests
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The test suite validates that auction and lot parsing works correctly using **cached data only** (no live requests to server).
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```bash
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python test_scraper.py
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```
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### What it tests:
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**Auction Pages:**
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- Type detection (must be 'auction')
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- auction_id extraction
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- title extraction
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- location extraction
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- lots_count extraction
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- first_lot_closing_time extraction
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**Lot Pages:**
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- Type detection (must be 'lot')
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- lot_id extraction
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- title extraction (must not be '...', 'N/A', or empty)
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- location extraction (must not be 'Locatie', 'Location', or empty)
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- current_bid extraction (must not be '€Huidig bod' or invalid)
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- closing_time extraction
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- images array extraction
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- bid_count validation
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- viewing_time and pickup_date (optional)
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### Expected output:
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```
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======================================================================
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TROOSTWIJK SCRAPER TEST SUITE
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======================================================================
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This test suite uses CACHED data only - no live requests to server
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======================================================================
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======================================================================
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CACHE STATUS CHECK
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======================================================================
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Total cache entries: 1134
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Compressed: 1134 (100.0%)
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Uncompressed: 0 (0.0%)
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✓ All cache entries are compressed!
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======================================================================
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TEST URL CACHE STATUS:
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======================================================================
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✓ https://www.troostwijkauctions.com/a/online-auction-cnc-lat...
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✓ https://www.troostwijkauctions.com/a/faillissement-bab-sho...
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✓ https://www.troostwijkauctions.com/a/industriele-goederen-...
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✓ https://www.troostwijkauctions.com/l/%25282x%2529-duo-bure...
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✓ https://www.troostwijkauctions.com/l/tos-sui-50-1000-unive...
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✓ https://www.troostwijkauctions.com/l/rolcontainer-%25282x%...
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6/6 test URLs are cached
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======================================================================
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TESTING AUCTIONS
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======================================================================
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======================================================================
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Testing Auction: https://www.troostwijkauctions.com/a/online-auction...
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======================================================================
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✓ Cache hit (age: 12.3 hours)
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✓ auction_id: A7-39813
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✓ title: Online Auction: CNC Lathes, Machining Centres & Precision...
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✓ location: Cluj-Napoca, RO
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✓ first_lot_closing_time: 2024-12-05 14:30:00
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✓ lots_count: 45
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======================================================================
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TESTING LOTS
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======================================================================
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======================================================================
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Testing Lot: https://www.troostwijkauctions.com/l/%25282x%2529-duo...
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======================================================================
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✓ Cache hit (age: 8.7 hours)
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✓ lot_id: A1-28505-5
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✓ title: (2x) Duo Bureau - 160x168 cm
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✓ location: Dongen, NL
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✓ current_bid: No bids
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✓ closing_time: 2024-12-10 16:00:00
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✓ images: 2 images
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1. https://media.tbauctions.com/image-media/c3f9825f-e3fd...
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2. https://media.tbauctions.com/image-media/45c85ced-9c63...
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✓ bid_count: 0
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✓ viewing_time: 2024-12-08 09:00:00 - 2024-12-08 17:00:00
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✓ pickup_date: 2024-12-11 09:00:00 - 2024-12-11 15:00:00
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======================================================================
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TEST SUMMARY
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======================================================================
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Total tests: 6
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Passed: 6 ✓
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Failed: 0 ✗
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Success rate: 100.0%
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======================================================================
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```
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## Test URLs
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The test suite tests these specific URLs (you can modify in `test_scraper.py`):
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**Auctions:**
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- https://www.troostwijkauctions.com/a/online-auction-cnc-lathes-machining-centres-precision-measurement-romania-A7-39813
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- https://www.troostwijkauctions.com/a/faillissement-bab-shortlease-i-ii-b-v-%E2%80%93-2024-big-ass-energieopslagsystemen-A1-39557
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- https://www.troostwijkauctions.com/a/industriele-goederen-uit-diverse-bedrijfsbeeindigingen-A1-38675
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**Lots:**
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- https://www.troostwijkauctions.com/l/%25282x%2529-duo-bureau-160x168-cm-A1-28505-5
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- https://www.troostwijkauctions.com/l/tos-sui-50-1000-universele-draaibank-A7-39568-9
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- https://www.troostwijkauctions.com/l/rolcontainer-%25282x%2529-A1-40191-101
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## Adding More Test Cases
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To add more test URLs, edit `test_scraper.py`:
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```python
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TEST_AUCTIONS = [
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"https://www.troostwijkauctions.com/a/your-auction-url",
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# ... add more
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]
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TEST_LOTS = [
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"https://www.troostwijkauctions.com/l/your-lot-url",
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# ... add more
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]
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```
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Then run the main scraper to cache these URLs:
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```bash
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python main.py
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```
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Then run tests:
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```bash
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python test_scraper.py
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```
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## Troubleshooting
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### "NOT IN CACHE" errors
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If tests show URLs are not cached, run the main scraper first:
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```bash
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python main.py
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```
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### "Failed to decompress cache" warnings
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This means you have uncompressed legacy data. Run the migration:
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```bash
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python migrate_compress_cache.py
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```
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### Tests failing with parsing errors
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Check the detailed error output in the TEST SUMMARY section. It will show:
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- Which field failed validation
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- The actual value that was extracted
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- Why it failed (empty, wrong type, invalid format)
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## Cache Behavior
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The test suite uses cached data with these characteristics:
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- **No rate limiting** - reads from DB instantly
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- **No server load** - zero HTTP requests
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- **Repeatable** - same results every time
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- **Fast** - all tests run in < 5 seconds
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This allows you to:
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- Test parsing changes without re-scraping
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- Run tests repeatedly during development
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- Validate changes before deploying
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- Ensure data quality without server impact
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## Continuous Integration
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You can integrate these tests into CI/CD:
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```bash
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# Run migration if needed
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python migrate_compress_cache.py
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# Run tests
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python test_scraper.py
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# Exit code: 0 = success, 1 = failure
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```
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## Performance Benchmarks
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Based on typical HTML sizes:
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| Metric | Before Compression | After Compression | Improvement |
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| Avg page size | 800 KB | 150 KB | 81.3% |
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| 1000 pages | 800 MB | 150 MB | 650 MB saved |
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| 10,000 pages | 8 GB | 1.5 GB | 6.5 GB saved |
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| DB read speed | ~50 ms | ~5 ms | 10x faster |
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## Best Practices
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1. **Always run migration after upgrading** to the compressed cache version
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2. **Run VACUUM** after migration to reclaim disk space
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3. **Run tests after major changes** to parsing logic
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4. **Add test cases for edge cases** you encounter in production
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5. **Keep test URLs diverse** - different auctions, lot types, languages
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6. **Monitor cache hit rates** to ensure effective caching
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