public void TestHasClass() { var elements = new HElement[] { new HElement("p", "First paragraph."), null, new HElement("p", new HAttribute("class", "selected"), "Second paragraph is selected.") }; Assert.False(elements[0].HasClass(null)); Assert.False(elements[0].HasClass("selected")); Assert.False(elements[1].HasClass("selected")); Assert.True(elements[2].HasClass("selected")); Assert.False(elements.HasClass(null)); Assert.False(elements.HasClass("not-selected")); Assert.True(elements.HasClass("selected")); }