Cookies

Cookies are generally stored in a web browser to identify the user's activity when browsing a web page. Selenium WebDriver handles web browser cookies by finding, deleting, modifying, and adding the cookies. It provides an excellent mechanism to modify cookies for high-level automation testing. Let's discuss Selenium WebDriver cookies, as follows:

  • The getCookies() method returns cookies present in a loaded page. The following is the syntax for this function:
    driver.manage().getCookies();

    Some of the useful tasks that you can perform with the help of getCookies() function are discussed as follows:

    Return cookies: The getCookies() method captures all the cookies generated in a web page. Let's see a model to get to know how we can return the entire cookie ID and expiry date and time and the domain name of each and every cookie:

    driver.get("https://www.google.co.in");
System.out.println(driver.manage().getCookies());
    • The following piece of code lets you explain how to get all the cookies in a systematic manner:
      driver.get("https://www.google.co.in");
Set<Cookie> cookies =  driver.manage().getCookies();
for(Cookie ck :cookies) {
  System.out.println(ck);
}
  • The getCookieNamed() returns a specific cookie by name. The following is the syntax for this function:
    driver.manage().getCookieNamed(String arg0);

    The following snippet returns cookies with respect to the name from the cookie file (memory of the browser); here, the generated cookie named NID is reached from the Google page:

    driver.get("https://www.google.co.in");
System.out.println(driver.manage().getCookies());
System.out.println(driver.manage().getCookieNamed("NID"));
  • The addCookie() method injects user-defined cookies into the loading page at runtime:
    driver.manage().addCookie(Cookie arg0);

    Adding a cookie replaces the existing cookie if one exists. Let's see how we can inject a new cookie into the current domain using the following code snippet:

    driver.get("https://www.google.co.in");
System.out.println(driver.manage().getCookies());   
Cookie cookie = new Cookie("NID", "67=h88c3NpCuTQABjgZF2Ix8CJHivtpYDLFk5gc1_dtEnz1aP_UugPSWGukXUPeKPXOeTKZdkcWrw-DnqjsOEGhL7sURlkhamIAxsBUWH_Hh76MQ490jfT9pdwsMkWoYJAJ");
driver.manage().addCookie(cookie);
System.out.println("------------------------");
driver.get("https://www.google.co.in");
System.out.println(driver.manage().getCookies());
  • The deleteCookie() method deletes the stored cookie in the loaded webpage. The following is the syntax for this function:
    driver.manage().deleteCookie(Cookie arg0);

    Deleting a cookie or a set of cookies means erasing certain cookies from the browser's cookie file. The following snippet explains the deleteCookie() method in different techniques:

    driver.get("https://www.google.co.in");
Set<Cookie> cookies =  driver.manage().getCookies();
for(Cookie ck :cookies) {
	driver.manage().deleteCookie(ck);
}
System.out.println(driver.manage().getCookies());
driver.get(driver.getCurrentUrl());
Cookie cookie = new Cookie("NID", "67=QKDjS3SxgW9NTe4mymVk8t0V_7314Tf1JFtkiVfb27REyOJJfW8NXzCWsandTyCYVllSK-EO7Vol2yJH1Xam4HmbKmUm7Pvm8g44dtOdm-wfW evNWKRr_UlF3Z34n28e");
driver.manage().deleteCookie(cookie);
  • The deleteAllCookies() method deletes all the stored cookies in a loaded web page. The following is the syntax of this function:
    driver.manage().deleteAllCookies();

    Let's delete all the cookies generated and stored in a web page (the current domain) using the following code snippet:

    driver.get("https://www.google.co.in");
System.out.println(driver.manage().getCookies());
driver.manage().deleteAllCookies();
System.out.println(driver.manage().getCookies());
  • The deleteCookieNamed() method deletes a specific cookie by name. The following is the syntax of this function:
    driver.manage().deleteCookieNamed(String arg0);

    This method clears the cookies with respect to the name from the cookie file (the memory of the browser). As cookies are stored as name-value pairs, removing a cookie from the current domain is simple using Selenium WebDriver's cookie functions. Let's have a quick glance at how to remove a single cookie from the Google page using the cookie name:

    driver.get("https://www.google.co.in");
System.out.println(driver.manage().getCookies());
driver.manage().deleteCookieNamed("NID");
System.out.println(driver.manage().getCookies());
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