The method has a parameter for the browserName and returns either a ChromeDriver or a FirefoxDriver object. Suppose if a new implemented class of WebDriver comes in to picture and has no connection from RemoteWebDriver. The problem is this: Some of them are: If you want to use a class instance in another class, you have options.

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Sign up or log in Sign up using Google. You should not use the ObjectManager.

The explanation of the difference between BeforeMethod and BeforeTest needs to be in your answer. Csnnot you can do. You are commenting using your Facebook account. Any one can help me on this issue.

Hierarchy of Selenium Classes and Interfaces – Make Selenium Easy

By continuing to use webdrifer website, you agree to their use. Skip to content learn Selenium WebDriver 5 Comments. Cannot instantiate interface in Magento 2? I think you have not mentioned the preference in your di. Hi Divya, RemoteWebDriver works as a base class for all browser classes.

Could you please explain this point in little detail sir.

Sign up using Facebook. In sort, If you Implement an Interface on class then you must have to override all the methods of Interface In your class.


WebDriver driver = new FirefoxDriver(); How does it work? | SELENIUM Automation in JAVA

Upcasting itnerface driver class object to WebDriver is example of achieving run time polymorphism. To solve this, we need a type that can be used instead of both FirefoxDriver and ChromeDriver.

Skip to content July 6, July 6, chinnu You are commenting using your WordPress. No need to implement Interface.

WebDriver driver = new FirefoxDriver(); How does it work?

You would instead want either BeforeClass or BeforeMethod. Be sure to add your interface as a preference correctly in the di.

Post Your Answer Discard By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies. Thank you So much Amod. I hope, This post will be very useful as it clears why we do up casting and down casting while creating script.

But lets say that we want to execute the script in Instantiaate. If you want to use a class instance in another class, you have options. It’s essentially a sub-suite, and can invoke many test methods. Given that you’re currently launching a new driver for each TestNG test confusingly, in TestNG a “test” is not at all the same thing as a test cannor, even though test methods are annotated with Testthat may or may not be what you want.


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I have all the jar files, where am I going wrong? Obviously, this is a problem as we cannot have 2 different types as the method return type. By default all the methods of Interface are public so no need to provide access modifiers.

But if we are upcasting to WebDriver then we are loosing some functionalities. BUt if you would have upcasted webrriver WebDriver, you can use functionalities of new class as well.

Next, you are extending all of your Classes from the same Lib class. Interfaces have a very interesting characteristic, though.