/** * @depends testInitialState * @return null */ public function testIsEnableDisableCss() { $this->assertSame($this->head, $this->head->disableCss()); $this->assertFalse($this->head->isCss()); $this->assertSame($this->head, $this->head->enableCss()); $this->assertTrue($this->head->isCss()); }