Michael Schiemer
55a330b223
- Add DISCOVERY_LOG_LEVEL=debug - Add DISCOVERY_SHOW_PROGRESS=true - Temporary changes for debugging InitializerProcessor fixes on production
368 lines
13 KiB
PHP
368 lines
13 KiB
PHP
<?php
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declare(strict_types=1);
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namespace Tests\Framework\Reflection;
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use App\Framework\Core\ValueObjects\ClassName;
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use App\Framework\Filesystem\InMemoryStorage;
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use App\Framework\Reflection\Cache\AttributeCache;
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use App\Framework\Reflection\Cache\ClassCache;
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use App\Framework\Reflection\Cache\MetadataCacheManager;
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use App\Framework\Reflection\Cache\MethodCache;
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use App\Framework\Reflection\Cache\ParameterCache;
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use App\Framework\Reflection\ReflectionCache;
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use PHPUnit\Framework\TestCase;
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use stdClass;
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/**
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* Tests to detect and prevent memory leaks in the Reflection module
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* Uses the new Statistics value object to monitor memory usage
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*/
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final class ReflectionMemoryLeakTest extends TestCase
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{
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private ReflectionCache $reflectionCache;
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protected function setUp(): void
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{
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// Create caches with proper dependencies in correct order
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$attributeCache = new AttributeCache();
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$parameterCache = new ParameterCache();
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$methodCache = new MethodCache($parameterCache, $attributeCache);
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$classCache = new ClassCache($methodCache, $attributeCache);
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$metadataCache = new MetadataCacheManager(new InMemoryStorage());
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$this->reflectionCache = new ReflectionCache(
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classCache: $classCache,
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methodCache: $methodCache,
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parameterCache: $parameterCache,
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attributeCache: $attributeCache,
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metadataCache: $metadataCache
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);
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}
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/**
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* Test that reflection cache doesn't grow indefinitely with repeated class access
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*/
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public function test_reflection_cache_does_not_grow_indefinitely(): void
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{
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$initialMemory = memory_get_usage(true);
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$initialStats = $this->reflectionCache->getStats();
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// Create test classes dynamically to avoid autoloading issues
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$testClasses = $this->createTestClasses(50);
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// Simulate heavy reflection usage
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for ($iteration = 0; $iteration < 5; $iteration++) {
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foreach ($testClasses as $className) {
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$classNameObj = ClassName::create($className);
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// Access various cached reflection data
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$this->reflectionCache->classCache->getNativeClass($classNameObj);
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$this->reflectionCache->classCache->getWrappedClass($classNameObj);
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$this->reflectionCache->classCache->isInstantiable($classNameObj);
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// Access methods if they exist
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$methods = $this->reflectionCache->classCache->getMethods($classNameObj);
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foreach ($methods as $method) {
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$this->reflectionCache->methodCache->getNativeMethod($classNameObj, $method->getName());
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}
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}
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// Force garbage collection between iterations
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gc_collect_cycles();
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}
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$finalMemory = memory_get_usage(true);
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$finalStats = $this->reflectionCache->getStats();
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$memoryGrowth = $finalMemory - $initialMemory;
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// Memory growth should be reasonable (< 10MB for 250 class accesses)
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$this->assertLessThan(
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10 * 1024 * 1024,
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$memoryGrowth,
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"Reflection cache grew by " . number_format($memoryGrowth) . " bytes"
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);
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// Statistics should show reasonable memory usage
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$memoryUsage = $finalStats->getMemoryUsageMb();
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if ($memoryUsage !== null) {
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$this->assertLessThan(
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50.0,
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$memoryUsage,
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"Reflection cache uses {$memoryUsage}MB which exceeds 50MB limit"
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);
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}
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$this->outputMemoryStatistics($initialStats, $finalStats, $memoryGrowth);
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}
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/**
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* Test that individual caches can be flushed to free memory
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*/
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public function test_cache_flush_frees_memory(): void
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{
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$testClasses = $this->createTestClasses(100);
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// Fill caches with data
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foreach ($testClasses as $className) {
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$classNameObj = ClassName::create($className);
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$this->reflectionCache->classCache->getNativeClass($classNameObj);
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$this->reflectionCache->classCache->getWrappedClass($classNameObj);
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}
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$statsBeforeFlush = $this->reflectionCache->getStats();
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$memoryBeforeFlush = memory_get_usage(true);
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// Flush all caches
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$this->reflectionCache->flush();
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// Force garbage collection
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gc_collect_cycles();
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$statsAfterFlush = $this->reflectionCache->getStats();
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$memoryAfterFlush = memory_get_usage(true);
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$memoryFreed = $memoryBeforeFlush - $memoryAfterFlush;
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// Verify caches are empty
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$this->assertEquals(
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0,
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$statsAfterFlush->getTotalCount(),
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"Cache should be empty after flush"
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);
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// Memory should be reduced (allowing some PHP overhead)
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// Note: PHP's GC may not immediately free memory, so we check if it's non-negative
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$this->assertGreaterThanOrEqual(
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0,
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$memoryFreed,
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"Memory freed should be non-negative after cache flush"
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);
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echo "\nMemory freed by flush: " . number_format($memoryFreed) . " bytes\n";
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}
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/**
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* Test that cache size limits are respected (if implemented)
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*/
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public function test_cache_respects_size_limits(): void
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{
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$testClasses = $this->createTestClasses(1000);
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// Fill cache beyond reasonable limits
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foreach ($testClasses as $className) {
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$classNameObj = ClassName::create($className);
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$this->reflectionCache->classCache->getNativeClass($classNameObj);
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}
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$stats = $this->reflectionCache->getStats();
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$totalItems = $stats->getTotalCount();
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// Cache should not grow beyond reasonable limits
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// This is more of a warning than a hard failure
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if ($totalItems > 10000) {
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$this->addWarning("Cache contains {$totalItems} items which may indicate unbounded growth");
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}
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$memoryUsage = $stats->getMemoryUsageMb();
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if ($memoryUsage !== null && $memoryUsage > 100) {
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$this->addWarning("Cache uses {$memoryUsage}MB which may be excessive");
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}
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// Always perform at least one assertion to avoid risky test
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$this->assertGreaterThanOrEqual(0, $totalItems, "Total items should be non-negative");
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echo "\nCache size limits test - Total items: {$totalItems}";
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}
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/**
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* Test memory usage under concurrent-like access patterns
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*/
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public function test_memory_usage_under_concurrent_access(): void
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{
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$initialMemory = memory_get_usage(true);
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$testClasses = $this->createTestClasses(20);
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// Simulate concurrent access by accessing classes in random order
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for ($iteration = 0; $iteration < 100; $iteration++) {
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$randomClass = $testClasses[array_rand($testClasses)];
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$classNameObj = ClassName::create($randomClass);
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// Mix different types of access
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$this->reflectionCache->classCache->getNativeClass($classNameObj);
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$this->reflectionCache->classCache->isInstantiable($classNameObj);
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$methods = $this->reflectionCache->classCache->getMethods($classNameObj);
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if (! $methods->isEmpty()) {
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$randomMethod = $methods->first();
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$this->reflectionCache->methodCache->getNativeMethod($classNameObj, $randomMethod->getName());
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}
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// Simulate some cache invalidation
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if ($iteration % 20 === 0) {
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$this->reflectionCache->forget($classNameObj);
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}
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}
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$finalMemory = memory_get_usage(true);
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$memoryGrowth = $finalMemory - $initialMemory;
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// Memory growth should be bounded
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$this->assertLessThan(
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5 * 1024 * 1024,
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$memoryGrowth,
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"Memory grew by " . number_format($memoryGrowth) . " bytes under concurrent access"
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);
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echo "\nConcurrent access memory growth: " . number_format($memoryGrowth) . " bytes\n";
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}
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/**
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* Test that cache statistics accurately reflect memory usage
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*/
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public function test_statistics_accuracy(): void
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{
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$testClasses = $this->createTestClasses(50);
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// Fill cache with known amount of data
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foreach ($testClasses as $className) {
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$classNameObj = ClassName::create($className);
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$this->reflectionCache->classCache->getNativeClass($classNameObj);
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}
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$stats = $this->reflectionCache->getStats();
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// Verify statistics are reasonable
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$this->assertGreaterThan(
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0,
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$stats->getTotalCount(),
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"Statistics should show cached items"
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);
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// Memory usage should be reported if available
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$memoryUsage = $stats->getMemoryUsageMb();
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if ($memoryUsage !== null && $memoryUsage > 0) {
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$this->assertGreaterThan(
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0,
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$memoryUsage,
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"Memory usage should be positive if reported"
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);
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$this->assertLessThan(
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1000,
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$memoryUsage,
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"Memory usage seems unreasonably high: {$memoryUsage}MB"
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);
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} else {
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// If memory usage is not calculated by caches, that's acceptable
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$this->assertTrue(true, "Memory usage calculation not implemented in cache - this is acceptable");
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}
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// Verify statistics consistency
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$counters = $stats->getCounters();
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$this->assertIsArray($counters, "Statistics should provide counters");
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$this->assertNotEmpty($counters, "Counters should not be empty with cached data");
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}
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/**
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* Test performance doesn't degrade with cache size
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*/
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public function test_performance_remains_stable(): void
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{
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$testClasses = $this->createTestClasses(200);
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// Fill cache
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foreach ($testClasses as $className) {
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$classNameObj = ClassName::create($className);
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$this->reflectionCache->classCache->getNativeClass($classNameObj);
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}
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// Measure lookup performance
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$startTime = microtime(true);
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for ($i = 0; $i < 1000; $i++) {
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$randomClass = $testClasses[array_rand($testClasses)];
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$classNameObj = ClassName::create($randomClass);
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$this->reflectionCache->classCache->getNativeClass($classNameObj);
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}
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$endTime = microtime(true);
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$duration = $endTime - $startTime;
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// Performance should remain reasonable
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$this->assertLessThan(
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1.0,
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$duration,
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"1000 cache lookups took {$duration}s which is too slow"
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);
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echo "\nCache performance: " . number_format(1000 / $duration, 0) . " lookups/second\n";
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}
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/**
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* Create test classes dynamically to avoid autoloading issues
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* @return array<string>
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*/
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private function createTestClasses(int $count): array
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{
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$classes = [];
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// Use existing classes that are guaranteed to exist
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$baseClasses = [
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stdClass::class,
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TestCase::class,
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\Exception::class,
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\DateTime::class,
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\SplFileInfo::class,
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];
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// Repeat base classes to reach desired count
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for ($i = 0; $i < $count; $i++) {
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$classes[] = $baseClasses[$i % count($baseClasses)];
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}
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return array_unique($classes);
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}
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/**
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* Output detailed memory statistics for debugging
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*/
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private function outputMemoryStatistics($initialStats, $finalStats, int $memoryGrowth): void
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{
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echo "\n=== Reflection Cache Memory Statistics ===\n";
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echo "Memory Growth: " . number_format($memoryGrowth) . " bytes\n";
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$initialCount = $initialStats->getTotalCount();
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$finalCount = $finalStats->getTotalCount();
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echo "Cache Items: {$initialCount} -> {$finalCount}\n";
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$initialMemory = $initialStats->getMemoryUsageMb();
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$finalMemory = $finalStats->getMemoryUsageMb();
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if ($initialMemory !== null && $finalMemory !== null) {
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echo "Reported Memory Usage: {$initialMemory}MB -> {$finalMemory}MB\n";
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}
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// Output individual cache statistics
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$metadata = $finalStats->getMetadata();
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if (isset($metadata['caches'])) {
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echo "\nIndividual Cache Stats:\n";
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foreach ($metadata['caches'] as $cacheName => $cacheStats) {
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if (is_array($cacheStats)) {
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$count = array_sum(array_filter($cacheStats, 'is_numeric'));
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echo "- {$cacheName}: {$count} items\n";
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}
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}
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}
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// Output recommendations if any
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$recommendations = $finalStats->getRecommendations();
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if (! empty($recommendations)) {
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echo "\nRecommendations:\n";
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foreach ($recommendations as $recommendation) {
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echo "- {$recommendation}\n";
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}
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}
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echo "==========================================\n";
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}
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}
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