AsseticBundle\Configuration::setBasePath PHP Метод

    public function setBasePath($basePath)
    {
        if (null !== $basePath) {
            $basePath = trim($basePath, '/');
            $basePath = $basePath . '/';
        }
        $this->basePath = $basePath;
    }

 public function testSetBasePath()
 {
     $url = '/~/jone/assets';
     $expected = trim($url, '/') . '/';
     $result = $this->object->setBasePath($url);
     $this->assertNull($result);
     $this->assertEquals($expected, $this->object->getBasePath());
 }