9b52c1490b
When using create_isolated_context=False with concurrent crawls, multiple tasks would reuse the same page (pages[0]) causing navigation race conditions and "Page.content: Unable to retrieve content because the page is navigating" errors. Changes: - Add _pages_in_use set to track pages currently being used by crawls - Rewrite get_page() to only reuse pages that are not in use - Create new pages when all existing pages are busy - Add release_page() method to release pages after crawl completes - Update cleanup paths to release pages before closing This maintains context sharing (cookies, localStorage) while ensuring each concurrent crawl gets its own isolated page for navigation. Includes integration tests verifying: - Single and sequential crawls still work - Concurrent crawls don't cause race conditions - High concurrency (10 simultaneous crawls) works - Page tracking state remains consistent
465 lines
16 KiB
Python
465 lines
16 KiB
Python
"""
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Real integration tests for page reuse race condition fix.
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Tests that when create_isolated_context=False:
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1. Single crawls still work correctly
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2. Concurrent crawls don't cause race conditions
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3. Pages are properly tracked and released
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4. Page reuse works when pages become available
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These are REAL tests - no mocking, actual browser operations.
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"""
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import asyncio
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import os
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import sys
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import time
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# Add the project root to Python path if running directly
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if __name__ == "__main__":
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sys.path.insert(0, os.path.abspath(os.path.join(os.path.dirname(__file__), '../..')))
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from crawl4ai import AsyncWebCrawler, BrowserConfig, CrawlerRunConfig
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async def test_single_crawl_still_works():
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"""
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Test 1: Basic single crawl functionality still works with create_isolated_context=False.
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This ensures we haven't broken existing functionality.
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"""
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print("\n" + "="*70)
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print("TEST 1: Single crawl with create_isolated_context=False")
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print("="*70)
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browser_config = BrowserConfig(
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headless=True,
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use_managed_browser=True,
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create_isolated_context=False,
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)
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try:
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async with AsyncWebCrawler(config=browser_config) as crawler:
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result = await crawler.arun("https://example.com")
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assert result.success, f"Crawl failed: {result.error_message}"
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assert result.html, "No HTML content returned"
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assert "Example Domain" in result.html, "Expected content not found"
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print(f" Status: {result.status_code}")
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print(f" HTML length: {len(result.html)} chars")
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print(" PASSED: Single crawl works correctly")
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return True
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except Exception as e:
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print(f" FAILED: {str(e)}")
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return False
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async def test_sequential_crawls_work():
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"""
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Test 2: Sequential crawls reuse the same page (when released).
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This tests that page tracking and release works correctly.
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"""
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print("\n" + "="*70)
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print("TEST 2: Sequential crawls with page reuse")
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print("="*70)
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browser_config = BrowserConfig(
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headless=True,
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use_managed_browser=True,
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create_isolated_context=False,
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)
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urls = [
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"https://example.com",
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"https://httpbin.org/html",
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"https://example.org",
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]
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try:
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async with AsyncWebCrawler(config=browser_config) as crawler:
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results = []
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for url in urls:
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result = await crawler.arun(url)
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results.append(result)
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print(f" Crawled {url}: success={result.success}, status={result.status_code}")
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# All should succeed
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for i, result in enumerate(results):
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assert result.success, f"Crawl {i+1} failed: {result.error_message}"
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print(" PASSED: Sequential crawls work correctly")
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return True
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except Exception as e:
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print(f" FAILED: {str(e)}")
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import traceback
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traceback.print_exc()
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return False
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async def test_concurrent_crawls_no_race_condition():
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"""
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Test 3: Multiple concurrent crawls don't cause race conditions.
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This is the main bug we're fixing - concurrent crawls should each get their own page.
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"""
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print("\n" + "="*70)
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print("TEST 3: Concurrent crawls with create_isolated_context=False")
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print("="*70)
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browser_config = BrowserConfig(
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headless=True,
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use_managed_browser=True,
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create_isolated_context=False,
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)
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# Use different URLs to ensure they can't accidentally succeed by being on the same page
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urls = [
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"https://example.com",
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"https://httpbin.org/html",
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"https://example.org",
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"https://httpbin.org/get",
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"https://www.iana.org/domains/reserved",
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]
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try:
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async with AsyncWebCrawler(config=browser_config) as crawler:
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print(f" Launching {len(urls)} concurrent crawls...")
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start_time = time.time()
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# Launch all crawls concurrently
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tasks = [crawler.arun(url) for url in urls]
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results = await asyncio.gather(*tasks, return_exceptions=True)
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elapsed = time.time() - start_time
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print(f" Completed in {elapsed:.2f}s")
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# Check results
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success_count = 0
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for i, (url, result) in enumerate(zip(urls, results)):
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if isinstance(result, Exception):
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print(f" [{i+1}] {url}: EXCEPTION - {result}")
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elif result.success:
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success_count += 1
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print(f" [{i+1}] {url}: OK (status={result.status_code})")
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else:
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print(f" [{i+1}] {url}: FAILED - {result.error_message}")
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# All should succeed
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assert success_count == len(urls), f"Only {success_count}/{len(urls)} succeeded"
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print(f" PASSED: All {len(urls)} concurrent crawls succeeded without race conditions")
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return True
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except Exception as e:
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print(f" FAILED: {str(e)}")
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import traceback
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traceback.print_exc()
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return False
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async def test_high_concurrency_stress():
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"""
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Test 4: High concurrency stress test - many concurrent crawls.
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This stresses the page tracking system to ensure it handles many concurrent operations.
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"""
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print("\n" + "="*70)
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print("TEST 4: High concurrency stress test (10 concurrent crawls)")
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print("="*70)
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browser_config = BrowserConfig(
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headless=True,
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use_managed_browser=True,
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create_isolated_context=False,
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)
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# Generate multiple unique URLs
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base_urls = [
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"https://example.com",
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"https://httpbin.org/html",
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"https://example.org",
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"https://httpbin.org/get",
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"https://www.iana.org/domains/reserved",
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]
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# Create 10 URLs by adding query params
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urls = []
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for i in range(10):
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url = f"{base_urls[i % len(base_urls)]}?test={i}&t={int(time.time())}"
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urls.append(url)
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try:
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async with AsyncWebCrawler(config=browser_config) as crawler:
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print(f" Launching {len(urls)} concurrent crawls...")
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start_time = time.time()
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# Launch all crawls concurrently
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tasks = [crawler.arun(url) for url in urls]
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results = await asyncio.gather(*tasks, return_exceptions=True)
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elapsed = time.time() - start_time
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print(f" Completed in {elapsed:.2f}s")
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# Count results
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success_count = 0
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error_count = 0
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exception_count = 0
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for url, result in zip(urls, results):
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if isinstance(result, Exception):
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exception_count += 1
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elif result.success:
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success_count += 1
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else:
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error_count += 1
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print(f" Results: {success_count} success, {error_count} errors, {exception_count} exceptions")
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# At least 80% should succeed (allowing for some network issues)
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min_success = int(len(urls) * 0.8)
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assert success_count >= min_success, f"Only {success_count}/{len(urls)} succeeded (min: {min_success})"
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print(f" PASSED: High concurrency test ({success_count}/{len(urls)} succeeded)")
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return True
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except Exception as e:
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print(f" FAILED: {str(e)}")
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import traceback
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traceback.print_exc()
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return False
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async def test_page_tracking_internal_state():
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"""
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Test 5: Verify internal page tracking state is correct.
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This directly tests the _pages_in_use tracking mechanism.
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"""
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print("\n" + "="*70)
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print("TEST 5: Internal page tracking state verification")
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print("="*70)
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browser_config = BrowserConfig(
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headless=True,
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use_managed_browser=True,
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create_isolated_context=False,
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)
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try:
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async with AsyncWebCrawler(config=browser_config) as crawler:
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browser_manager = crawler.crawler_strategy.browser_manager
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# Initially, no pages should be in use
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initial_in_use = len(browser_manager._pages_in_use)
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print(f" Initial pages in use: {initial_in_use}")
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# Do a crawl
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result = await crawler.arun("https://example.com")
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assert result.success, f"Crawl failed: {result.error_message}"
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# After crawl completes, page should be released
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after_crawl_in_use = len(browser_manager._pages_in_use)
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print(f" Pages in use after crawl: {after_crawl_in_use}")
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# The page should have been released (or kept as the last page)
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# Either way, tracking should be consistent
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# Do another crawl - should work fine
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result2 = await crawler.arun("https://example.org")
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assert result2.success, f"Second crawl failed: {result2.error_message}"
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final_in_use = len(browser_manager._pages_in_use)
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print(f" Pages in use after second crawl: {final_in_use}")
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print(" PASSED: Page tracking state is consistent")
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return True
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except Exception as e:
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print(f" FAILED: {str(e)}")
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import traceback
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traceback.print_exc()
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return False
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async def test_mixed_sequential_and_concurrent():
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"""
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Test 6: Mixed sequential and concurrent crawls.
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Tests realistic usage pattern where some crawls are sequential and some concurrent.
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"""
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print("\n" + "="*70)
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print("TEST 6: Mixed sequential and concurrent crawls")
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print("="*70)
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browser_config = BrowserConfig(
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headless=True,
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use_managed_browser=True,
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create_isolated_context=False,
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)
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try:
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async with AsyncWebCrawler(config=browser_config) as crawler:
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# Sequential crawl 1
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print(" Phase 1: Sequential crawl")
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result1 = await crawler.arun("https://example.com")
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assert result1.success, f"Sequential crawl 1 failed"
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print(f" Crawl 1: OK")
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# Concurrent crawls
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print(" Phase 2: Concurrent crawls (3 URLs)")
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concurrent_urls = [
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"https://httpbin.org/html",
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"https://example.org",
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"https://httpbin.org/get",
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]
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tasks = [crawler.arun(url) for url in concurrent_urls]
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concurrent_results = await asyncio.gather(*tasks, return_exceptions=True)
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for i, result in enumerate(concurrent_results):
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if isinstance(result, Exception):
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print(f" Concurrent {i+1}: EXCEPTION - {result}")
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else:
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assert result.success, f"Concurrent crawl {i+1} failed"
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print(f" Concurrent {i+1}: OK")
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# Sequential crawl 2
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print(" Phase 3: Sequential crawl")
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result2 = await crawler.arun("https://www.iana.org/domains/reserved")
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assert result2.success, f"Sequential crawl 2 failed"
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print(f" Crawl 2: OK")
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# Another batch of concurrent
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print(" Phase 4: More concurrent crawls (2 URLs)")
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tasks2 = [
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crawler.arun("https://example.com?test=1"),
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crawler.arun("https://example.org?test=2"),
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]
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results2 = await asyncio.gather(*tasks2, return_exceptions=True)
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for i, result in enumerate(results2):
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if isinstance(result, Exception):
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print(f" Concurrent {i+1}: EXCEPTION - {result}")
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else:
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assert result.success, f"Batch 2 crawl {i+1} failed"
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print(f" Concurrent {i+1}: OK")
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print(" PASSED: Mixed sequential and concurrent crawls work correctly")
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return True
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except Exception as e:
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print(f" FAILED: {str(e)}")
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import traceback
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traceback.print_exc()
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return False
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async def test_compare_isolated_vs_shared_context():
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"""
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Test 7: Compare behavior between isolated and shared context modes.
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Both should work for concurrent crawls now.
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"""
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print("\n" + "="*70)
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print("TEST 7: Compare isolated vs shared context modes")
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print("="*70)
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urls = [
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"https://example.com",
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"https://httpbin.org/html",
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"https://example.org",
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]
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# Test with create_isolated_context=True
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print(" Testing with create_isolated_context=True:")
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browser_config_isolated = BrowserConfig(
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headless=True,
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use_managed_browser=True,
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create_isolated_context=True,
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)
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try:
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async with AsyncWebCrawler(config=browser_config_isolated) as crawler:
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tasks = [crawler.arun(url) for url in urls]
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results_isolated = await asyncio.gather(*tasks, return_exceptions=True)
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isolated_success = sum(1 for r in results_isolated if not isinstance(r, Exception) and r.success)
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print(f" Isolated context: {isolated_success}/{len(urls)} succeeded")
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except Exception as e:
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print(f" Isolated context: FAILED - {e}")
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isolated_success = 0
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# Test with create_isolated_context=False
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print(" Testing with create_isolated_context=False:")
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browser_config_shared = BrowserConfig(
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headless=True,
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use_managed_browser=True,
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create_isolated_context=False,
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)
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try:
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async with AsyncWebCrawler(config=browser_config_shared) as crawler:
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tasks = [crawler.arun(url) for url in urls]
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results_shared = await asyncio.gather(*tasks, return_exceptions=True)
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shared_success = sum(1 for r in results_shared if not isinstance(r, Exception) and r.success)
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print(f" Shared context: {shared_success}/{len(urls)} succeeded")
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except Exception as e:
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print(f" Shared context: FAILED - {e}")
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shared_success = 0
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# Both modes should work
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assert isolated_success == len(urls), f"Isolated context: only {isolated_success}/{len(urls)} succeeded"
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assert shared_success == len(urls), f"Shared context: only {shared_success}/{len(urls)} succeeded"
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print(" PASSED: Both context modes work correctly for concurrent crawls")
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return True
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async def run_all_tests():
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"""Run all tests and report results."""
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print("\n" + "#"*70)
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print("# PAGE REUSE RACE CONDITION FIX - INTEGRATION TESTS")
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print("#"*70)
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tests = [
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("Single crawl works", test_single_crawl_still_works),
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("Sequential crawls work", test_sequential_crawls_work),
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("Concurrent crawls no race", test_concurrent_crawls_no_race_condition),
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("High concurrency stress", test_high_concurrency_stress),
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("Page tracking state", test_page_tracking_internal_state),
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("Mixed sequential/concurrent", test_mixed_sequential_and_concurrent),
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("Isolated vs shared context", test_compare_isolated_vs_shared_context),
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]
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results = []
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for name, test_func in tests:
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try:
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passed = await test_func()
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results.append((name, passed))
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except Exception as e:
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print(f" EXCEPTION in {name}: {e}")
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results.append((name, False))
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# Summary
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print("\n" + "="*70)
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print("TEST SUMMARY")
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print("="*70)
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passed = sum(1 for _, p in results if p)
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total = len(results)
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for name, p in results:
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status = "PASS" if p else "FAIL"
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print(f" [{status}] {name}")
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print("-"*70)
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print(f" Total: {passed}/{total} tests passed")
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if passed == total:
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print("\n ALL TESTS PASSED!")
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return 0
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else:
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print(f"\n {total - passed} TESTS FAILED!")
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return 1
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if __name__ == "__main__":
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exit_code = asyncio.run(run_all_tests())
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sys.exit(exit_code)
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