Selenium WebDriver live project automates browsers. Essentially Selenium WebDriver project lets you open URLs and communicate with the rendered webpages, e.g.:
Selenium WebDriver is a tool for automating browsers.
Because Selenium WebDriver videos is essentially a library and you use a normal programming language, it is possible to use any other library that the programming language supports to call other APIs or data banks.
I often use other Java libraries in conjunction with Selenium WebDriver online training to let me get the database to check on outcome and use REST libraries to create API calls, then assess results on the web pages with Selenium WebDriver tutorials.
Using a library rather than a framework provides you with more flexibility in the way you approach your automation.
- Installing the Programs
- To work with WebDriver with Java we should set up some tools:
- Java JDKthe Java compiler and libraries
- Mavena dependency management tool for Java
- IntelliJan IDE for programming Java
- Firefoxthe default browser utilized by WebDriver
- JUnitA Unit testing framework for Java that we will utilize to run our evaluation code
- WebDriverThe Selenium WebDriver
- WebDriver and WebElement
The two chief categories that you employ for Selenium WebDriver screening are Selenium WebDriver course and WebElement.WebDriver signifies the browser and has general means of controlling the browser and getting common components or parts of the page.WebElement represents an element on the page and supports systems related to that element, e.g., click, returning the text in the element, returning characteristics, etc.
We shall now look at these strategies in more detail depth, and show you how you can learn more your self.
Using Code Completion to Learn.We can make use of the present code weve created to help us see the number of procedures open to us on the Selenium tutorial WebDriver class.
If I place the cursor in IntelliJ, just after driver. and then press ctrl room I'll view a pop up menu showing the approaches that I could phone from WebDriver:
findElement locate an element on the pageget go to a URLgetTitle return the name of the page as a stringclose near the tabfindElements return a Listing of WebElement items that match the locator, e.g., locate all the anchor components on the pagegetCurrentUrl return the existing URL; this may be useful if we have been redirected to another pagegetPageSource reunite the source code of the pageetc.Code finish is a great method to explore the possibilities open to us when we are examining.
The WebDriver methods are generally procedures you may use at any point in time i.e., the context is having a page loaded in the browser.You have already seen many of these methods, so we wont repeat these here.
getWindowHandle returns a summary of handles to any or all open tabsswitchTo allows to you switch focus to an open turntable or a framemanage enables you to command the current browser particulars, e.g., view and amend cookies, alter the size and location of the browser windownavigate provides an alternate to the get command so you can 'browse().to(aUrl)WebElement approaches
The WebElement systems tend to be local to some specific element on the webpage.
You might have already seen:
click which activates a mouse click on the componentfindElement which can help you find a youngster elementShould you use code completion in the IDE,
then you will observe that individuals can also:
clear clear the text in a input fieldfindElements find kids of the elementgetAttribute get a value of an attribute, e.g., type or idgetTagName the tag name for the element, e.g., li or agetText get the text in the element, e.g., the hyperlink textsendKeys send keys to type to the subject.
We may also assess the status of the element:
isDisplayed Is the component observable?isEnabled Can we interact with the element?isSelected Is it selected?There are more processes on WebElement but the above list addresses these that you would use frequently.
The preceding are the fundamentals that would help you work with many web pages. You'd be able to load pages into the browser, find elements on the webpage, click and socialize with them, and recover text from your webpage to check on your results.
And for very simple websites, this really is probably all you must learn.
For more complex sites and applications, synchronization becomes important.
This means, rather than:
open a pageLocate a linkclick the linkAssess the title on the brand new pageInstead,
open a pagewait for the page to be loaded and ready to usefind a linkclick the linkwait for the page to be loaded and ready to useExamine the title on the new pageThe above approach becomes important when the web application we are testing uses lots of Java Script to populate the page, or for a single-page app which is only one page, but the DOM modifications via Java Script predicated on user activities.
Selenium WebDriver provides two principal strategies to synchronization.: a integral synchronization approach called implied delay, along with a more user-managed approach known as explicit wait.
Even though this was a very simple opening to WebDriver, you've learned the fundamentals needed to get started.You know the best way to install the programsYouve seen just how to produce a fundamental testYou learn how to take up a fresh browser and navigate to some URLYou know the best way to interrogate the page with systems about the WebDriver class.
You know how to findElement to the page and after that interrogate it and manipulate it together with approaches on the WebDriver typeYou know the need for synchronizing on particular DOM states, rather than implicitly wait for elements to be reachableYou learn the best way to explicitly wait for components on the page prior to socializing with them to make your tests robustThis ought to be enough to help you get started writing code against production techniques, and produce reasonably robust evaluations.
Selenium WebDriver training offers you more than this, which we havent been able to cover.When you become more familiar with Selenium WebDriver video tutorials, youll desire to utilize the attributes that allow you to run your tests on several browsers, i.e., Chrome, IE, and Safari, and maybe not only Firefox.
You might want to experiment together with the HmlUnitDriver to run your tests headless, i.e., without making a browser. For more complex tests, you may have to add more synchronization or use different browser abilities. But for the simple test we wrote in this informative article, you could use HtmlUnitDriver by replacing FirefoxDriver the following:
WebDriver driver = new HtmlUnitDriver();You may also run your evaluations on other devices using the RemoteWebDriver; this lets you connect to some Selenium WebDriver online training Grid and run your evaluation on various browser and OS combinations. You may also utilize this to reap the benefits of cloud-established grid providers so that you dont need to maintain lots of actual machines with different operating system and browser combinations.
As you enlarge your automation, youll want to learn how you can produce your own personal custom ExpectedCondition approaches and synchronize on application-specified states; this will help in keeping your test code simple to maintain, more domain-specific and easier to read.
As you assemble more evaluations, youll desire to shift away from having driver. code in your tests, and instead start using a A Full Page Object Model approach, where you create categories that represent your Webpages, and you write your evaluations with regards to Page Object approaches, e.g.:
HomePage homePage = new HomePage(driver);homePage.navigationMenu().clickDownload();Writing Page Objects and Domain Object abstractions assists helps maintain your evaluations maintainable and simpler to make strong with powerful synchronization.
The future for Selenium WebDriver continues to appear bright and makes it a fantastic investment when it comes to time to learn and ability development.
A few hints that will help you move further:
Use code end to see the methods available.Use the JavaDoc to see what a process does.Browse the documentation on the Selenium homepage.If your tests are randomly failing, then it is probably a synchronization problem, so a DD some Selenium WebDriverWait to your code.Regardless how tempting it is to raise the implied wait timeout, dont.
Use WebDriverWait rather.In case your test passes when you debug and step-through line by-line, but fails when your operate the evaluation, then presume it really is a synchronization problem and you should add an powerful 'WebDriverWait.