fix: enzyme testing replaced by react tester

[jciasenza]

Replaced enzyme display dropdown on toggling dropdown test in Main file for react-renderer tests.

I made PR of this issue #35245

And Testing OK

If something needs to be modified, let me know, thank you!!!
Atte
Juan Carlos (Aulasneo)

Developer Checklist

Test suites passing
Documentation and test plan updated, if applicable
Received code-owner approving review

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[brian-smith-tcril]

Thanks for this! It's awesome to see enzyme tests replaced!

Would it be possible to use userEvent instead of fireEvent for these? It is recommended by testing-library, and the differences are described here: https://testing-library.com/docs/user-event/intro/#differences-from-fireevent

fireEvent dispatches DOM events, whereas user-event simulates full interactions, which may fire multiple events and do additional checks along the way.

A lot of the time moving to userEvent from fireEvent is very straightforward. It looks like that is likely the case with here.

[jciasenza]

Hi @brian-smith-tcril, I'll try it and let you know!!
I made the change, please review !!!

[kdmccormick]

@jciasenza , it looks like the edited test case is failing. If you click into "Javascript tests / JS" check below, you should be able to see how it is failing. If you have a development environment set up, you could also run the tests locally with jest.

[brian-smith-tcril]

It looks like the error is

    Cannot find module '@testing-library/react' from 'lms/djangoapps/instructor/static/instructor/ProblemBrowser/components/Main/Main.test.jsx'

so I think adding the testing library packages as dev dependencies should resolve this.

[jciasenza]

Yes @brian-smith-tcril , that is the error but apparently the version of React is 16 and I am looking for the compatible version for @testing-library/react and @testing-library/user-event

[brian-smith-tcril]

Yes @brian-smith-tcril , that is the error but apparently the version of React is 16 and I am looking for the compatible version for @testing-library/react and @testing-library/user-event

From https://www.npmjs.com/package/@testing-library/react/v/14.3.1

React Testing Library versions 13+ require React v18. If your project uses an older version of React, be sure to install version 12