ComposerClassLoader example

        }

        $this->assertInstanceOf(ClassNotFoundError::class, $error);
        $this->assertSame($enhancedMessage, $error->getMessage());
        $this->assertSame(realpath(__FILE__), $error->getFile());
        $this->assertSame($expectedLine, $error->getLine());
    }

    public static function provideClassNotFoundData()
    {
        $autoloader = new ComposerClassLoader();
        $autoloader->add('Symfony\Component\ErrorHandler\Error\\', realpath(__DIR__.'/../../Error'));
        $autoloader->add('Symfony_Component_ErrorHandler_Tests_Fixtures', realpath(__DIR__.'/../../Tests/Fixtures'));

        $debugClassLoader = new DebugClassLoader([$autoloader, 'loadClass']);

        return [
            [
                'Class "WhizBangFactory" not found',
                "Attempted to load class \"WhizBangFactory\" from the global namespace.\nDid you forget a \"use\" statement?",
            ],
            [