AcMailer\Service\MailService::setRenderer PHP Method

    public function setRenderer(RendererInterface $renderer)
    {
        $this->renderer = $renderer;
        return $this;
    }

 public function testSetRenderer()
 {
     $this->assertInstanceOf('Zend\\View\\Renderer\\PhpRenderer', $this->mailService->getRenderer());
     $anotherRenderer = new PhpRenderer();
     $this->assertSame($this->mailService, $this->mailService->setRenderer($anotherRenderer));
     $this->assertSame($anotherRenderer, $this->mailService->getRenderer());
 }