Selenium 4 Grid Classic Mode

Tutorial​​ 24​​ -​​ Selenium 4​​ Grid​​ Classic​​ mode

Let us now see the​​ second​​ mode viz​​ Classic​​ mode​​ (hub and node​​ to be started separately)​​ 

Go to the official download page​​ and download the latest stable version of Selenium server

https://www.selenium.dev/downloads/​​ 

​​ 

 

Download the latest stable chrome browser executable

 

 

Click documentation, you will be redirected to below page

https://chromedriver.chromium.org/​​ 

 

Click stable release link that you see above​​ 

Download the zip file and extract it.​​ 

Place the chromedriver jar in the same location where you have kept the selenium grid jar​​ 

 

Open command prompt and cd to above location. Let us now start the hub​​ by executing below command:

java –jar <jarfilename.jar> hub

 

Launch the hub url. Notice that the grid has no registered nodes yet

 

Next we will register a node. Open another terminal​​ and execute below command:​​ java –jar <jarfilename.jar> node

Notice that the node has been added

Refresh the hub session, see below. We can now see registered nodes (chrome and firefox​​ browsers)

 

Now that we have registered node to a hub,​​ create a script and import the Capabilities class as shown below

 

 

Run the script.​​ 

Notice below that the script is executed. If you don’t see the script getting executed, stop and restart the hub and node commands

 

See below, 1 session is started​​ 

 

Notice below, session is started on​​ chrome​​ browser

Similarly, download the firefox executable

 

 

 

 

 

Comment chrome options line and add firefox options line

 

Run

 

Notice below, the capabilities column now shows that our test is running on firefox browser​​ 

So this is how we can execute our test in a​​ classic​​ grid server.

Code snippets

package​​ sel4scripts;

 

import​​ java.net.MalformedURLException;

import​​ java.net.URL;

import​​ org.openqa.selenium.By;

import​​ org.openqa.selenium.Capabilities;

import​​ org.openqa.selenium.WebDriver;

import​​ org.openqa.selenium.chrome.ChromeOptions;

import​​ org.openqa.selenium.firefox.FirefoxOptions;

import​​ org.openqa.selenium.remote.RemoteWebDriver;

 

public​​ class​​ GridClassicMode {

 

public​​ static​​ void​​ main(String[]​​ args)​​ throws​​ MalformedURLException, InterruptedException {

 

 

 Capabilities​​ cap​​ =​​ new​​ FirefoxOptions();

//Capabilities cap = new ChromeOptions();

 WebDriver​​ driver​​ =​​ new​​ RemoteWebDriver(new​​ URL("http://localhost:4444"),cap);

 

driver.get("https://www.google.com/");

driver.findElement(By.name("q")).sendKeys("Hello Grid !!!");

 Thread.sleep(3000);

 }

 

}

 

 

Thank you for reading!

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