Selenium multiple webdriver instances. The preferred method is - WebDriver with Python on Windows.
Selenium multiple webdriver instances I need a way to manage parallel execution across multiple standalone instances. The same tactic applies to Tests and Instances as well. 0. When working with Selenium for web automation and testing, you might often find yourself needing to run tests across multiple browsers concurrently to reduce execution time and increase test coverage. I would like to open these 3 web drivers at the same time when I run the mainscript. – darren Commented Jan 20, 2023 at 21:37 Apr 26, 2025 · Multithreading and multiprocessing are two popular approaches for improving the performance of a program by allowing it to run tasks in parallel. Sep 23, 2021 · We are attempting to run these selenium tests on a designated machine via IIS. I've came across the issue that I cannot really solve, maybe someone here knows the solution. Mar 14, 2023 · I have an api made in fastapi named "/get-data" which is using for scraping the data from a website using selenium chrome driver and it takes 5 minutes to return response back to the user Feb 20, 2021 · python multiple instance of selenium webdriver. I have successfully tested this using Chrome, FireFox, and PhantomJs (up to 5). WebdriverIO allows you to run multiple Selenium sessions in a single test. openqa. Run multiple chrome (profiles) instances for automation task. In this example, the myFirefoxBrowser instance will start waiting on a message once the myChromeBrowser instance has clicked on #send button. From instantiate I meant, you need to create two chrome web drivers because once the options are set and you have created the driver, you cannot change this later Oct 6, 2018 · Similarly, for classes, all the test classes under java classes will run in parallel. common. In today’s fast-paced world of software development and testing, efficiency and speed are of paramount importance. View full answer Replies: 2 comments About. I can launch them in parallel alright but noted that they are running on multiple tabs in one browser. Apr 14, 2014 · We are trying to run multiple instances of Chrome on the SAME machine so we can divide the tests into groups to run simultaneously. The problem is, the website being used, is the type of website where if you are logged into a #1 session and try to start a #2 session by logging in from a different device (or Oct 24, 2022 · I wrote a class to create a instance of Selenium webdriver then scrap some data. Thus it is again on the same page or logged-out. WebDriverException' occurred in WebDriver. A common issue in Selenium automation is unintentionally creating multiple WebDriver instances, which often leads to problems like slow performance, browser crashes, and session errors. After running processes, instances are opening smoothly, but they are not sent to my "instance" On BrowserStack, you can run multiple Selenium Webdriver tests at the same time across various browser, device and OS combinations. Run multiple instances of Selenium driver in same Apr 14, 2014 · I know running multiple instances simultaneously was possible in prior versions of Chrome (I believe 29 was the last one that people had luck with. can I somehow specify (in ChromeOptions perhaps) to run each test in a newly spawned browser? Apr 9, 2023 · Threading in Python offers a powerful means of achieving parallelism, enabling multiple functions to run simultaneously. Jun 14, 2022 · I'm learning automation testing in Java using Selenium and Testng. I'm sure my implementation Feb 19, 2024 · Perhaps something like below would help ensure each test works on a different instance of Selenium so that operations from one test don't interfere with another running at the same time. Mar 5, 2018 · I have 4 Python scripts (3 web drivers and a main script). The task is relied upon being logged in on a website. by import By from webdriver_manager. By utilizing threading with Selenium’s WebDriver, we can significantly I want to run multiple webdrivers to scrape some sites for data. g. We MUST run multiple instances on a single machine but nothing we've tried has worked. like a real user). For example: WebDriver chrome = new ChromeDriver(); Examples Run multiple browser at the same time. Opening multiple chromedriver on start of selenium. When I publish it to our machine, two instances of chromedriver will show up in the taskmanager when it is only being run once. Examples Improve this doc Run multiple browser at the same time. Ask Question Asked 11 years, 5 months ago. We have two main methods: the createInstance() for the local execution and the createRemoveInstance() for the remote execution. ) Due to IT constraints, it will be difficult to run multiple VMs on a machine and using Selenium Grid. Please let me know if I could provide more details or some code snippets that you would like to check. example -DartifactId=my-selenium-project -DarchetypeArtifactId=maven-archetype-quickstart -DinteractiveMode=false. I used multiprocessing but you can use whatever you want. All solutions I found on the internet waits until the previous session has finished loading and only then open a new instance of the browser. Suppose you have several instances of test cases, like A and B then all the methods of instance A will be executed in thread TA. Apr 22, 2014 · Then Try to use different driver variables for different instances: Eg: import org. I've tried threading but it was just stuck at refreshing the same selenium driver (maybe I did it wrong). The tests execute in alphabetical order by default; each test can also execute in isolation. If I run a single instance it works fine. Everything works fine in single thread but when I try switching to multithread all operation only execute in one bro Search for jobs related to Selenium multiple webdriver instances or hire on the world's largest freelancing marketplace with 23m+ jobs. But you can on the other hand instantiate one WebDriver instance for each thread but it will launch multiple browsers which will consume more memory. Selenium Client Libraries. Multiremote makes it easy and convenient to control multiple browsers, whether you want them doing the same thing in parallel, or different things in concert. All the methods of instance B will be executed in thread TB and TA! =TB. WebDriver if you can to ensure you're using any of the latest bugfixes. I feel like I need to use the map function to do it but I dont know how. How to use several instance of selenium [python] 1. Sometimes it will close one of the instances, while other times it doesn't close Aug 21, 2017 · python multiple instance of selenium webdriver. Busca trabajos relacionados con Selenium multiple webdriver instances o contrata en el mercado de freelancing más grande del mundo con más de 23m de trabajos. 我通过调用new FireFoxDriver()创建多个实例，但Windows中的会话似乎相互干扰。 Nov 9, 2021 · Which means that it will not keep track of any browser window which is - Opened manually - Opened by a previous session of Selenium Webdriver By session of selenium WebDriver we mean the duration from the time we instantiate a WebDriver instance to the time we kill it via WebDriver. Sounds like you are using the same user for both test runs. This tool is used for automating web-based application testing to verify that it performs expectedly. This is 6 days ago · Starting and stopping a session is for opening and closing a browser. Selenium WebDriver Framework Architecture has four main Components: Selenium WebDriver Framework Architecture 1. Each WebDriver instance communicates with the TestingBot hub independently. Open the pom. But it is not a 'dead instance', it is a working instance of a different script. So, to do tests in multiple tabs, WebDriver must be focused separately on each of them. Mar 6, 2025 · I tried running two Selenium Standalone instances on ports 4444 and 4445. When I Run All tests, the WebDriver driverIE is initialised. While an individual WebDriver instance cannot be shared among threads, it is easy to create multiple WebDriver instances. On BrowserStack, you can run multiple Selenium Webdriver tests at the same time across various browser, device and OS combinations. Selenium WebDriver allows you to choose a programming language to create test scripts. Jul 20, 2020 · How to run multiple instances at once with selenium? If you want to do more than that then you have to use selenium Grid. These approaches can be particularly useful when working with Python and Selenium, as they allow you to perform multiple actions simultaneously, such as automating the testing of a web application. selenium. It's free to sign up and bid on jobs. I'm trying to use Selenium to automate file uploading and I've already written a program with Selenium WebDriver that works. Also, I am disposing the chromedriver properly for each instance. at this line: driver = new ChromeDriver(driverService, options); Selenium multiple webdriver instances ile ilişkili işleri arayın ya da 24 milyondan fazla iş içeriğiyle dünyanın en büyük serbest çalışma pazarında işe alım yapın. I'm creating an instance of Chrome to login into a website, then I would like to create multiple instances of webdriver USING the same first instance (like a copy) or at least multiple instances which keep stored credentials that I used. 2. Each session will be separate if you want them to be. Kaydolmak ve işlere teklif vermek ücretsizdir. This is called Parallel Testing. You don’t need selenium grid to execute test in parallel but managing 10 instances with grid would be a piece of cake. Parallel Testing gives you the same benefits as running a multi-threaded application. dll. Have the same issue. Test scenarios are written as JUnit tests and executed by JUnit - although GUI tests are actually no unit tests. Apr 15, 2013 · This is an old question, but for anyone still reading along, it is very possible to run multiple Selenium WebDriver instances in parallel without using Grid. Mar 2, 2023 · Run multiple Selenium instances to be executed in from selenium import webdriver from selenium. Mar 10, 2024 · In the context of Selenium automation, ThreadLocal can be used to create isolated instances of WebDriver for each thread, ensuring that test cases run independent of each other. With this Jun 13, 2012 · I have to automate multiple webpages using Selenium. Same instance of Webdriver in multiple classes in Java Selenium. I create What is business case to have two separate webdriver instances? Seems a bit strange for me. My package. FirefoxDriver; import Pretty much the title of this post, is there some way that we can run multiple instances of Selenium simultaneously? I need to fill 15000 entries on about 12 different websites, looking for the best way to do it without spending too much processing time. Selenium. Run multiple instances of Selenium driver in same machine. Nov 9, 2008 · If you have two separate instances of WebDriver then all commands sent to one instance should go to Chrome and the other go to Firefox. This is “Parallel Testing”. EDIT2: Here is an incredibly stripped down version of what I have: Dec 24, 2014 · A first chance exception of type 'OpenQA. Nov 20, 2019 · Hi I try to open parallely multiple instances of Chrome in python using Webdriver and Multiprocessing. Right now i am running one at a time and it is way too slow. The issue of thread-safety isn't in your code but in the actual browser bindings. The problem is, there are thousands of files which need to be uploaded, I'd like to run multiple browser instances simultaneously to speed up the automation. Jan 20, 2023 · It's worth noting that when running Selenium WebDriver with multiprocessing, you need to make sure that each process is running on a different port, otherwise it will raise an exception. Since there number of webpages to test is very very large, I am trying to figure out if I can make this process parallel. They all assume there will only be one command at a time (e. 3. The preferred method is - WebDriver with Python on Windows. May 26, 2025 · TestingBot's cloud can handle multiple sessions, so as long as your tests are set up to create separate WebDriver instances, you can do parallel. chrome import ChromeDriverManager from Jul 10, 2024 · Selenium WebDriver Framework Architecture. These libraries provide bindings or APIs that allow you to interact with Assuming that the issue is caused by other instances of the driver running in background (that are not crashing, so I don't wanna kill them). I expected my tests to distribute between them automatically, but instead, all tests ran on a single instance. I'm trying to run multiple tests fro Aug 20, 2015 · I have a question about selenium webdriver for python. Selenium allows test engineers to create browser instances and control them automatically to simulate user interaction with the web application under test. py. See full list on guru99. xml file in the project and add dependencies for TestNG and Selenium WebDriver. firefox. Creating Sessions Creating a new session corresponds with the W3C command for New session The session is created automatically by initializing a new Driver class object. This becomes handy when you need to test application features where multiple users are required (e. Aug 9, 2013 · I recently implemented a simple multi-thread utility that allows running tests on separate tabs on separate threads WITH JUST ONE WEBDRIVER INSTANCE. Separate instances of same webdriver (using same browser) will likely share cookies and authorization, and will not be independent. Nov 8, 2022 · I'm building a selenium application and I'm trying to use multiple webdriver instances to speed up it's work. Selenium supports various programming languages such as Java, Python, C#, Ruby, and more. Dec 16, 2016 · This should not happen as I already have the chromedriver. You can invoke multiple browser sessions by just creating multiple driver objects, and managing them. Looking at the processes, I almost always have at least one instance of the chromedriver running right now. I would like to open n number of drivers and do in paralel to every one of them and not one by one. You need to instantiate two web drivers with the profile you want to set. I'd recommend also updating to the latest versions of Selenium. Mar 21, 2025 · What is Selenium WebDriver? Selenium WebDriver is a web framework that permits you to execute cross-browser tests. Oct 23, 2019 · Selenium WebDriver-Chrome. Additional information: The HTTP request to the remote WebDriver server for URL http:/loca1host:50148/session timed out after 60 seconds. session_id (considering your webdriver instance is assigned as 'driver'), but i have seen nothing so far on being able to control a webdriver instance by this session_id. For example: All browsers running at the same time. chat or WebRTC applications). Jun 12, 2015 · WebDriver is not thread-safe. add Aug 20, 2022 · This class is responsible to manage the local or remote instances because we need different code approaches using Selenium WebDriver. All tests then execute in that WebDriver instance before the WebDriver instance is closed at the end of the test run. It's not been mentioned anywhere in the documentation that for each new browser type we need to have separate server instance & I have used single selenium server instance and used it to access IE, FF, Chrome & Safari using Selenium RC. When the users log-out or in it gets the same session state as in all other locations. I have tried selenium-webdriver, webdriverjs and wdjs, and none of them seem to be able to do multiple http requests for different pages asynchronously. Each WebDriver instance uses an isolated context, so session conflict should not be an issue. Ephemeral sockets. can i use same webdriver in 2 different scripts? 0. . 14 May 3, 2023 · Note: I don't recommemd using uc_driver=True in that case because undetected-chromedriver seems to have issues with multiple drivers because of the way it patches chromedriver. This command will set the Maven project template. json contains: "scripts": { "node-inspector": "n Mar 25, 2021 · Let's say you want to open two chrome profiles. Each language allows a session to be created with arguments from one of these classes (or equivalent): Options to describe the kind of session you want Dec 22, 2013 · Using Common Selenium WebDriver instance. I use this configuration: def init_driver(): chrome_options = uc. This Python script uses the Selenium WebDriver to create multiple instances of the Firefox browser, each with a unique IP address obtained from a free proxy list. Quit or by manually killing the process. The problem with WebDriver is that it can focus only one tab (window) at a time. 是否可以在本地使用多个Selenium Webdriver而不使用Selenium网格同时运行多个测试？ I am creating multiple instances by calling new FireFoxDriver() but the sessions in the windows seem to interfere with each other. Nov 17, 2015 · It's not right you need grid for executing multiple browser sessions. webdriver. Feb 26, 2012 · Thanks for your response. Es gratis registrarse y presentar tus propuestas laborales. Feb 24, 2017 · Out of the box a new Selenium WebDriver instance uses an empty profile, unless you specify otherwise. Creating the local instance Jul 3, 2024 · mvn archetype:generate -DgroupId=com. WebDriver; import org. Step 2: Add Dependencies. There is a general problem of TCP/IP v4, where the TCP/IP stack uses ephemeral ports when making a connection between two sockets. Apr 7, 2021 · When I run wdio test, I see multiple chrome instances opening up parallelly even though I haven't specified the tests to run in parallel. Aug 5, 2014 · EDIT: I also know that you can retrieve the Selenium session_id with driver. com I'm using Selenium ChromeDriver in c# and am trying to launch multiple browser runs in parallel. simple code : Jan 12, 2020 · How can I run multiple selenium drivers parallelly to login into a instagram using text file inputs (email:password format). My test are based on PageObject design pattern, and each pageobject shares webdriver. exe kept under separate code bases which is being triggered by each instances. When I run the code locally, everything works perfectly. And also the argument model of *iexplore/*firefox is for Selenium RC, isn't it? WebDriver instantiation. Your sample uses 4. ChromeOptions() chrome_options. add_argument("--incognito") chrome_options. plhlrqbvcfqsmxfkpdwbopljcnxrksnelyopijnxnpciujobel