/**
* @depends testInitialState
* @return null
*/
public function testIsEnableDisableJs()
{
$this->assertSame($this->head, $this->head->disableJs());
$this->assertFalse($this->head->isJs());
$this->assertSame($this->head, $this->head->enableJs());
$this->assertTrue($this->head->isJs());
}