public function testInstantArticleAlmostEmpty()
{
$article = InstantArticle::create()->withCanonicalUrl('')->withHeader(Header::create())->addChild(Paragraph::create()->appendText('Some text to be within a paragraph for testing.'))->addChild(Paragraph::create())->addChild(Paragraph::create()->appendText(" \n \t "))->addChild(Image::create())->addChild(Image::create()->withURL(''))->addChild(SlideShow::create()->addImage(Image::create()->withURL('https://jpeg.org/images/jpegls-home.jpg'))->addImage(Image::create()))->addChild(Ad::create())->addChild(Paragraph::create()->appendText('Other text to be within a second paragraph for testing.'))->addChild(Analytics::create())->withFooter(Footer::create());
$expected = '<!doctype html>' . '<html>' . '<head>' . '<link rel="canonical" href=""/>' . '<meta charset="utf-8"/>' . '<meta property="op:generator" content="facebook-instant-articles-sdk-php"/>' . '<meta property="op:generator:version" content="' . InstantArticle::CURRENT_VERSION . '"/>' . '<meta property="op:markup_version" content="v1.0"/>' . '</head>' . '<body>' . '<article>' . '<p>Some text to be within a paragraph for testing.</p>' . '<figure class="op-slideshow">' . '<figure>' . '<img src="https://jpeg.org/images/jpegls-home.jpg"/>' . '</figure>' . '</figure>' . '<p>Other text to be within a second paragraph for testing.</p>' . '</article>' . '</body>' . '</html>';
$result = $article->render();
$this->assertEquals($expected, $result);
}