public function testFilterConfig()
{
$result = $this->config->filterConfig('Uglifyjs');
$expected = array('path' => '/path/to/uglify-js');
$this->assertEquals($expected, $result);
$this->config->filterConfig('Sprockets', array('some' => 'value'));
$this->assertEquals(array('some' => 'value'), $this->config->filterConfig('Sprockets'));
$this->assertEquals(array(), $this->config->filterConfig('imaginary'));
}