List<HtmlDivision> cardDivs = cardsDiv.getElementsByAttribute("div", "class", "card");
assertEquals(3, cardDivs.size());
// test card icon when icon URL is not null
HtmlDivision card1Div = cardDivs.get(0);
assertEquals("card1", card1Div.asText());
HtmlAnchor detailsLink = getFirstLinkByText(card1Div, "card1");
HtmlImage cardIcon = (HtmlImage) detailsLink.getHtmlElementsByTagName("img").get(0);
assertEquals("http://www.google.com/favicon.ico", cardIcon.getAttribute("src"));
// test card icon when icon URL is null