public void ShouldReturnValueOfClassAttributeOfAnElementAfterSwitchingIFrame()
{
driver.Url = iframePage;
driver.SwitchTo().Frame("iframe1");
IWebElement wallace = driver.FindElement(By.XPath("//div[@id='wallace']"));
String className = wallace.GetAttribute("class");
Assert.AreEqual("gromit", className);
}