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re-requesting review due to some test refactoring (edited PR description for more context and added relevant tickets for context)

I remove them in test suites where they are reused, but I can add the line to each modified individual test case https://github.com/carbon-design-system/carbon/pull/5456/files#diff-e6bde0b208435880662cb06911ee85c1R246

Thank you for the update @emyarod! Given you added a clean-up code at the last line of each test case, it won't run if there are any assertions failures, etc. You could use a try ... catch block, but I tend to do:

describe('suite', () => {
  let div;

  it('does the right thing', () => {
    div = document.createElement('div');
    document.body.appendChild(div);
    (Your test)
  });

  afterEach(() => {
    if (div && div.parentNode) {
      div.parentNode.removeChild(div);
    }
    div = null;
  });
});

Note: Ensuring clean-up stuffs done after (each) tests avoids flaky tests.