We need to update the JS unit test style guide - https://geck.chevah.com/styleguide/javascript.html#test-styleguide as it is no longer relevant for jest.

we should update the CSS class name convention - https://geck.chevah.com/styleguide/css.html#css-class-naming
not to use CSS class names for JS or testing purposes. instead, we should use data-test and data-js attributes
the CSS class name is a hack that hijacks the CSS in a way that is not needed
it might had made sense a long time ago when there was no good support for data-* attributes