composer/tests/Composer/Test/Autoload/Fixtures/autoload_main.php

<?php

// autoload_namespaces.php generated by Composer

$vendorDir = dirname(dirname(__FILE__));
$baseDir = dirname($vendorDir);

return array(
    'Main' => $baseDir . '/src',
    'Lala' => array($baseDir . '/src', $baseDir . '/lib'),
);