@Test
	public void ExpColSingle() throws InterruptedException{
		String classplus = "accordion-icon icon-plus";
		String classmin = "accordion-icon icon-minus";
		String allbtn = actualstr = driver.findElement(By.xpath("//div[@class=\"control-accordion\"]/span[position()=2]")).getText();
		elements = driver.findElements(By.xpath("//section/h2//span"));
		for (WebElement e:elements){
			if(e.getAttribute("class").equals(classplus)){
				e.click();
				Assert.assertEquals(e.getAttribute("class"),classmin);
			}else{
				e.click();
				Assert.assertEquals(e.getAttribute("class"),classplus);
			}
			if (e.equals(elements.get(elements.size()-1))){
				if (allbtn.equals("Expand All")){
					actualstr = driver.findElement(By.xpath("//div[@class=\"control-accordion\"]/span[position()=2]")).getText();
					expectedstr = "Collapse All";
					Assert.assertEquals(actualstr,expectedstr);
				}else if (allbtn.equals("Collapse All")){
					actualstr = driver.findElement(By.xpath("//div[@class=\"control-accordion\"]/span[position()=2]")).getText();
					expectedstr = "Expand All";
					Assert.assertEquals(actualstr,expectedstr);
				}
			}
		}
	}