public function testCombineWithFilters()
{
$files = [new Local(APP . 'js/classes/base_class_two.js')];
$target = new AssetTarget(TMP . 'class.js', $files, ['Sprockets']);
$compiler = $this->instance();
$result = $compiler->generate($target);
$expected = <<<TEXT
var BaseClass = new Class({
});
var BaseClassTwo = BaseClass.extend({
});
TEXT;
$this->assertEquals($expected, $result);
}