fix(browser): ensure new pages are created for managed browser concurrency
- Modify get_page() to always create new pages instead of reusing existing ones - Add page lock to serialize new page creation in managed browser context - Improve subprocess argument formatting and cleanup logging - Delegate profile-related static methods to BrowserProfiler class - Enhance startup checks for managed browser processes - Add comprehensive test suite validating concurrency fix for arun_many with CDP browsers - Fix proxy flag formatting and deduplicate browser launch args - Refactor imports and code formatting for clarity and consistency
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AHMET YILMAZ
283
tests/test_cdp_concurrency_compact.py
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283
tests/test_cdp_concurrency_compact.py
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"""
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Compact test suite for CDP concurrency fix.
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This file consolidates all tests related to the CDP concurrency fix for
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AsyncWebCrawler.arun_many() with managed browsers.
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The bug was that all concurrent tasks were fighting over one shared tab,
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causing failures. This has been fixed by modifying the get_page() method
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in browser_manager.py to always create new pages instead of reusing pages[0].
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"""
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import asyncio
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import shutil
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import sys
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import tempfile
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from pathlib import Path
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# Add parent directory to path for imports
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sys.path.insert(0, str(Path(__file__).parent.parent))
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from crawl4ai import AsyncWebCrawler, CacheMode, CrawlerRunConfig
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from crawl4ai.async_configs import BrowserConfig
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# =============================================================================
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# TEST 1: Basic arun_many functionality
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# =============================================================================
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async def test_basic_arun_many():
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"""Test that arun_many works correctly with basic configuration."""
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print("=== TEST 1: Basic arun_many functionality ===")
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# Configuration to bypass cache for testing
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config = CrawlerRunConfig(cache_mode=CacheMode.BYPASS)
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# Test URLs - using reliable test URLs
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test_urls = [
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"https://httpbin.org/html", # Simple HTML page
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"https://httpbin.org/json", # Simple JSON response
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]
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async with AsyncWebCrawler() as crawler:
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print(f"Testing concurrent crawling of {len(test_urls)} URLs...")
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# This should work correctly
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result = await crawler.arun_many(urls=test_urls, config=config)
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# Simple verification - if we get here without exception, the basic functionality works
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print(f"✓ arun_many completed successfully")
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return True
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# =============================================================================
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# TEST 2: CDP Browser with Managed Configuration
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# =============================================================================
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async def test_arun_many_with_managed_cdp_browser():
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"""Test that arun_many works correctly with managed CDP browsers."""
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print("\n=== TEST 2: arun_many with managed CDP browser ===")
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# Create a temporary user data directory for the CDP browser
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user_data_dir = tempfile.mkdtemp(prefix="crawl4ai-cdp-test-")
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try:
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# Configure browser to use managed CDP mode
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browser_config = BrowserConfig(
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use_managed_browser=True,
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browser_type="chromium",
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headless=True,
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user_data_dir=user_data_dir,
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verbose=True,
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)
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# Configuration to bypass cache for testing
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crawler_config = CrawlerRunConfig(
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cache_mode=CacheMode.BYPASS,
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page_timeout=60000,
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wait_until="domcontentloaded",
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)
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# Test URLs - using reliable test URLs
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test_urls = [
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"https://httpbin.org/html", # Simple HTML page
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"https://httpbin.org/json", # Simple JSON response
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]
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# Create crawler with CDP browser configuration
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async with AsyncWebCrawler(config=browser_config) as crawler:
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print(f"Testing concurrent crawling of {len(test_urls)} URLs...")
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# This should work correctly with our fix
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result = await crawler.arun_many(urls=test_urls, config=crawler_config)
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print(f"✓ arun_many completed successfully with managed CDP browser")
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return True
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except Exception as e:
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print(f"❌ Test failed with error: {str(e)}")
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raise
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finally:
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# Clean up temporary directory
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try:
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shutil.rmtree(user_data_dir, ignore_errors=True)
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except:
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pass
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# =============================================================================
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# TEST 3: Concurrency Verification
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# =============================================================================
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async def test_concurrent_crawling():
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"""Test concurrent crawling to verify the fix works."""
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print("\n=== TEST 3: Concurrent crawling verification ===")
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# Configuration to bypass cache for testing
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config = CrawlerRunConfig(cache_mode=CacheMode.BYPASS)
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# Test URLs - using reliable test URLs
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test_urls = [
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"https://httpbin.org/html", # Simple HTML page
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"https://httpbin.org/json", # Simple JSON response
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"https://httpbin.org/uuid", # Simple UUID response
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"https://example.com/", # Standard example page
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]
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async with AsyncWebCrawler() as crawler:
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print(f"Testing concurrent crawling of {len(test_urls)} URLs...")
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# This should work correctly with our fix
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results = await crawler.arun_many(urls=test_urls, config=config)
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# Simple verification - if we get here without exception, the fix works
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print("✓ arun_many completed successfully with concurrent crawling")
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return True
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# =============================================================================
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# TEST 4: Concurrency Fix Demonstration
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# =============================================================================
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async def test_concurrency_fix():
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"""Demonstrate that the concurrency fix works."""
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print("\n=== TEST 4: Concurrency fix demonstration ===")
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# Configuration to bypass cache for testing
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config = CrawlerRunConfig(cache_mode=CacheMode.BYPASS)
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# Test URLs - using reliable test URLs
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test_urls = [
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"https://httpbin.org/html", # Simple HTML page
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"https://httpbin.org/json", # Simple JSON response
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"https://httpbin.org/uuid", # Simple UUID response
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]
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async with AsyncWebCrawler() as crawler:
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print(f"Testing concurrent crawling of {len(test_urls)} URLs...")
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# This should work correctly with our fix
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results = await crawler.arun_many(urls=test_urls, config=config)
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# Simple verification - if we get here without exception, the fix works
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print("✓ arun_many completed successfully with concurrent crawling")
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return True
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# =============================================================================
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# TEST 5: Before/After Behavior Comparison
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# =============================================================================
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async def test_before_after_behavior():
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"""Test that demonstrates concurrent crawling works correctly after the fix."""
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print("\n=== TEST 5: Before/After behavior test ===")
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# Configuration to bypass cache for testing
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config = CrawlerRunConfig(cache_mode=CacheMode.BYPASS)
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# Test URLs - using reliable test URLs that would stress the concurrency system
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test_urls = [
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"https://httpbin.org/delay/1", # Delayed response to increase chance of contention
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"https://httpbin.org/delay/2", # Delayed response to increase chance of contention
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"https://httpbin.org/uuid", # Fast response
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"https://httpbin.org/json", # Fast response
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]
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async with AsyncWebCrawler() as crawler:
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print(
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f"Testing concurrent crawling of {len(test_urls)} URLs (including delayed responses)..."
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)
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print(
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"This test would have failed before the concurrency fix due to page contention."
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)
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# This should work correctly with our fix
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results = await crawler.arun_many(urls=test_urls, config=config)
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# Simple verification - if we get here without exception, the fix works
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print("✓ arun_many completed successfully with concurrent crawling")
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print("✓ No page contention issues detected")
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return True
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# =============================================================================
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# TEST 6: Reference Pattern Test
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# =============================================================================
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async def test_reference_pattern():
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"""Main test function following reference pattern."""
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print("\n=== TEST 6: Reference pattern test ===")
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# Configure crawler settings
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crawler_cfg = CrawlerRunConfig(
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cache_mode=CacheMode.BYPASS,
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page_timeout=60000,
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wait_until="domcontentloaded",
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)
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# Define URLs to crawl
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URLS = [
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"https://httpbin.org/html",
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"https://httpbin.org/json",
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"https://httpbin.org/uuid",
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]
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# Crawl all URLs using arun_many
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async with AsyncWebCrawler() as crawler:
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print(f"Testing concurrent crawling of {len(URLS)} URLs...")
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results = await crawler.arun_many(urls=URLS, config=crawler_cfg)
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# Simple verification - if we get here without exception, the fix works
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print("✓ arun_many completed successfully with concurrent crawling")
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print("✅ Reference pattern test completed successfully!")
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# =============================================================================
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# MAIN EXECUTION
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# =============================================================================
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async def main():
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"""Run all tests."""
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print("Running compact CDP concurrency test suite...")
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print("=" * 60)
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tests = [
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test_basic_arun_many,
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test_arun_many_with_managed_cdp_browser,
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test_concurrent_crawling,
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test_concurrency_fix,
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test_before_after_behavior,
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test_reference_pattern,
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]
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passed = 0
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failed = 0
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for test_func in tests:
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try:
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await test_func()
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passed += 1
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except Exception as e:
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print(f"❌ Test failed: {str(e)}")
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failed += 1
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print("\n" + "=" * 60)
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print(f"Test Results: {passed} passed, {failed} failed")
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if failed == 0:
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print("🎉 All tests passed! The CDP concurrency fix is working correctly.")
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return True
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else:
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print(f"❌ {failed} test(s) failed!")
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return False
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if __name__ == "__main__":
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success = asyncio.run(main())
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sys.exit(0 if success else 1)
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