Usage of Java Streams and Lambdas in Selenium WebDriver

	@Test(description = "Test to filter links from the web page")
	public void tc1_filter_links() {
		WebDriverManager.chromedriver().setup();
		WebDriver driver=new ChromeDriver();

		driver.get("http://demowebshop.tricentis.com");
		List<WebElement> links=driver.findElements(By.tagName("a"));
		System.out.println("No of Links :"+links.size());
		//Below Code is using Lambdas & Streams
		List<String> filterlinks=links.stream().filter(ele->!ele.getText().equals("")).map(ele->ele.getText()).collect(Collectors.toList());
		System.out.println("After Applying Filter, Links having only Linktext :"+filterlinks.size());
		filterlinks.forEach(System.out::println);
		driver.close();
	}

	@Test(description ="Test to filter the products which are >1000")
	public void tc2_filter_price()
	{
		WebDriverManager.chromedriver().setup();
		WebDriver driver=new ChromeDriver();
		driver.get("http://demowebshop.tricentis.com/");


		List<WebElement> prodTitles=driver.findElements(By.xpath("//h2[@class='product-title']"));
		List<WebElement> prodPrices=driver.findElements(By.xpath("//div[@class='prices']"));

		Map <String,Double>products_map=new HashMap<String,Double>();
		
		for(int i=0;i<prodTitles.size();i++) 
		{
			String title=prodTitles.get(i).getText();
			double price=Double.parseDouble(prodPrices.get(i).getText());

			products_map.put(title, price);

		}
		//Below Code is using Lambdas & Streams	
		//find product whose price is greater than 1000 (Process using filter)
		System.out.println("**** Product price is > 1000 using filter & lambda ****");
		System.out.println("**** Below Products price is > 1000                ****");
                products_map.entrySet().stream().filter( e -> e.getValue() > 1000).forEach(v->System.out.println(v));
		driver.close();
    }

	@Test(description = "Test to make the products in Sorted Order A-Z")
	public void tc3_sorted_list()
	{
		WebDriverManager.chromedriver().setup();
		WebDriver driver = new ChromeDriver();

		driver.get("http://demowebshop.tricentis.com/");
		driver.findElement(By.xpath("//ul[@class='top-menu']//a[normalize-space()='Books']")).click();

		Select sortbydrp=new Select(driver.findElement(By.id("products-orderby")));
		sortbydrp.selectByVisibleText("Name: Z to A");
		
		List<WebElement> product_items=driver.findElements(By.xpath("//h2[@class='product-title']"));
		List<String> beforesort=product_items.stream().map(item->item.getText()).collect(Collectors.toList());
		System.out.println("Before Sort : " +beforesort);
		List<String> aftersort=product_items.stream().map(item->item.getText()).sorted().collect(Collectors.toList());
		System.out.println("After Sort : "+aftersort);
		driver.close();
	}

@Test(description = "Test to Handle Windows")
	public void tc4_handle_windows()
	{
		WebDriverManager.chromedriver().setup();
		WebDriver driver = new ChromeDriver();
		driver.get("https://demoqa.com/browser-windows");
		driver.findElement(By.id("tabButton")).click();
		
		Set<String>windowIds=driver.getWindowHandles(); // Here using Set collection
		//Print the url's using lambda expression
		windowIds.forEach(winid -> System.out.println(driver.switchTo().window(winid).getCurrentUrl()));
		driver.close();
    }