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WebDriverIO – Dismiss Alerts
dismissAlert():- dismissAlert() command dismisses Alert box or dialogue box came across Application while performing automation on that specific web application. If that has been not done by dismissAlert() command then it throws error. In Simple Words, dismissAlert() commands sends a request to dismiss an Alert user prompt, which may or may not necessarily have a dismiss button.
Usage: – browser.dismissAlert()
Pre-requisite: Have ‘Visual Studio Code’ IDE installed in your machine (Click here to install if not installed in your machine)
Here is the small Exercise to understand dismissAlert Command by clicking on confirmation button which generates a confirmation AlertBox while Automating the Application and then dismissing it, using dismissAlert command of WebDriverIO.
Using dismissAlert() Command
First, I will demonstrate the exercise where we will open URL in browser window, then click on confirmation Button which generates a confirmation Alert Box on Screen and then dismisses it using dismissAlert() command, followed by practically demonstrating the WebDriverIO Automation code for achieving it.
Exercise:-
1) Navigate to http://omayo.blogspot.com/ 
2) Clicking on GetConfirmation Button on Omayo.blogspot.com Web Application.
3) Now dismissing the Alert/Dialogue Box.
Practical Demonstration:
Following are the Steps to Perform above Exercise (i.e. click on GetConfirmation Button which generates a Confirmation Alert Box on Screen and then dismisses it using dismissAlert() command) using WebDriverIO Automation code in ‘Visual Studio Code’ IDE:
Pre-requisite: Download the Project from here (Click here to Download) and Unzip it.
1) Open Visual Studio Code on your system.
2) Click on File and Select Open Folder. Select the project folder on which your workspace is present.
3) Expand ‘test’ from the Explorer, right click on the displayed ‘specs’ and select ‘New File’ option as shown below:
4) Give any name of the newly created file say “dismissAlert_Command_test.js” and copy the below given code into the newly created file as shown below and save the file:
The following is the WebDriverIO sample code to click on GetConfirmation button to generate Alert Box on Screen and dismiss it on ‘Omayo.blogspot.com’ Web application.
You can understand this code, by reading the comments provided in the below code:
Copy the code from here:-
describe('This Example show usage of dismissAlert() command in webdriverio', () => {
it('should dismiss confirmation Alert Box', ()=> {
browser.url('http://omayo.blogspot.com');
$('#confirm').click(); //Click on confirmation Alert Button
browser.dismissAlert(); //dimiss the Alert/Dialogue Box
browser.pause(3000);
});
});
5) Click on ‘wdio.conf.js’ to open in the IDE, and make sure the Test file name is updated properly in this file as shown below and save it:
6) Click on Terminal and Open New Terminal.
7) By Default, Powershell Terminal will open, change it to git bash as shown below:
8) Open Another Terminal in the same way we did in the step 6 and run below command in terminal
.\node_modules\.bin\wdio .\wdio.conf.js
Observe that the ‘dismissAlert_Command_test.js’ will get executed successfully, the firefox Browser will launch, and open URL given in code and respective action will be taken by WebDriverIO Automation code.
And also, the result will be displayed as ‘Passed’ in the terminal as shown below:
This is how, we can take help of dismissAlert() Command of WebDriverIO to dismiss Alert Box which appears on screen. Likewise, I will explain other commands to perform different operations on Web Pages using WebDriverIO in the upcoming Articles.
Next Steps:
> To learn more about WebDriverIO, continue to the next post (Click on Next Post link below)
> Check complete WebDriverIO Tutorial Contents here (Click here)
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