Basic To Advanced Selenium Java Full Course - Session 7 - Selenium Architecture, Locators & Commands

YouTube Excerpt: What is Selenium? It is an open source tool for automated testing of web applications across different browsers and platforms It consists of following components: Selenium WebDriver - It is an API which allows you to programmatically interact with different browsers the way a real user would. Selenium IDE - It is a record and playback tool mostly used for prototype applications. Selenium Grid - It is a server which allows tests to use web browser instances running on remote machines. Why the name Selenium? While Selenium was being developed, there was another popular automation framework which was developed by Mercury. The name Selenium comes from a joke made by Huggins (creator of Selenium) in an email, mocking a competitor named Mercury, saying that you can cure mercury poisoning by taking selenium supplements. The others that received the email took the name and ran with it Selenium WebDriver Architecture: Every statement is converted to URL by JSON Wire Protocol over HTTP URL is passed to Browser Drivers HTTP request is received by driver through a HTTP Server Driver passes the request to real browser over HTTP Commands are executed on the browser Response is sent back to browser driver which sends it back to UI Selenium Locators: By Id - It is the most preferred way to locate any element on the webpage as it is supposed to be unique all the time. It is also the fastest and most reliable way of locating a particular element By Name - If there is no Id then name is considered to be the next best choice for locating any element. In case there are multiple elements with the same name, WebDriver will perform action on the first matching element By LinkText - This type of locator only applies to hyperlinks in the webpage By PartialLinkText - This locator is similar to linkText but it only matches with a portion of the text for the links By TagName - A tagName is part of a DOM structure where every element on a page is been defined via tag like input, button or anchor. Uses the tag name to locate an element By ClassName - WebDriver can locate elements on a webpage with their class name By XPath - It uses path XPath expressions to locate an element on the page. Two types Absolute and Relative XPath By CSSSelector - It combines an element selector and a selector value that can identify particular elements on a web page Selenium WebDriver Commands: get() - It is used to open any webpage URL navigate().to() - It is used to navigate to a webpage navigate().forward() - It navigates the browser forward by one page recorded in browser history navigate().back() - It instructs the browser to redirect to previous webpage navigate().refresh() - It instructs the browser to refresh the current webpage getTitle() - This method fetches the title of the current page getCurrentUrl() - This method fetches the current url opened in the browser getPageSource() - This method returns the source code of the web page close() - This method closes the current window controlled by webdriver quit() - This method closes all windows opened by webdriver clear() - This method clears out the values within an element sendKeys() - This method simulates typing into an element which may set its value. It can be also used to press key from the keyboard click() - This method simulates the click event on any element isDisplayed() - This method determines if an element is displayed or not in the page isEnabled() - This method determines if an element is currently enabled in the web page isSelected() - This method determines if the element is selected or not. It is only applicable for Checkbox, Select Options and Radio buttons submit() - This method is used to submit a form getText() - This method will fetch the text of the given element getTagName() - This method gets the tag name of the element

What is Selenium? It is an open source tool for automated testing of web applications across different browsers and platforms It consists of...

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