After upgrading my application from Angular 10 to 11, I encountered an error while running unit tests. The error causes the tests to terminate, but strangely, sometimes they run without any issues. Does anyone have suggestions on how to resolve this issue?
This error only occurs during unit testing; the application runs smoothly with no errors otherwise.
The primary issue with this scenario was the challenge of identifying the specific component or service where the error occurred. Additionally, there were instances when tests would run smoothly without any errors.
To troubleshoot, I conducted a global search for "play()" and discovered that it was causing the problem.
playAlertSound(){
const audio=new Audio()
audio.src= /* audio source link */
audio.load()
audio.play()
}
The code snippet responsible for the issue was related to the audio.play() function. There are two potential solutions to address this:
audio.muted=true; audio.autoplay=true;
I opted for the first approach, as it seemed simpler and more straightforward. This involved using spyOn to mock the playAlertSound function whenever it was called.
spyOn(component,'playAlertSound').and.callFake(()=>{})
This approach allowed for consistent mocking of the function during testing.
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