Reapply "Enable FileCacheStorage for OptimizedDirectorySourceLocatorFactory in tests" (#4693)

Author: staabm

src/Testing/TestCase.neon

@@ -11,11 +11,6 @@ services:
 			fileExtensions: %fileExtensions%
 			excludePaths: %excludePaths%
 
-	# overrides service from services.neon
-	cacheStorage:
-		class: PHPStan\Cache\MemoryCacheStorage
-		arguments!: []
-
 	# overrides service from parsers.neon
 	currentPhpVersionSimpleParser!:
 		factory: @currentPhpVersionRichParser

tests/PHPStan/Reflection/BetterReflection/SourceLocator/OptimizedDirectorySourceLocatorTest.neon

@@ -0,0 +1,5 @@
+services:
+	# overrides service from services.neon
+	cacheStorage:
+		class: PHPStan\Cache\MemoryCacheStorage
+		arguments!: []

tests/PHPStan/Reflection/BetterReflection/SourceLocator/OptimizedDirectorySourceLocatorTest.php

@@ -12,6 +12,7 @@
 use TestDirectorySourceLocator\AFoo;
 use TestDirectorySourceLocator\EmptyClass;
 use function array_map;
+use function array_merge;
 use function basename;
 use const PHP_VERSION_ID;
 
@@ -317,4 +318,14 @@ public function testBug5525(): void
 		$this->assertSame('Faker\\Provider\\nl_BE\\Text', $className);
 	}
 
+	public static function getAdditionalConfigFiles(): array
+	{
+		return array_merge(
+			parent::getAdditionalConfigFiles(),
+			[
+				__DIR__ . '/OptimizedDirectorySourceLocatorTest.neon',
+			],
+		);
+	}
+
 }