}</h2>` +
              TESTING_SAMPLES[cat]
                .map((x) => {
                  const titleClass =
                    x.class && x.class.includes('fail') ? 'fail' : '';

                  let comment = '';
                  if (typeof x.comment === 'string') {
                    comment = x.comment;
                  } else if (Array.isArray(x.comment)) {
                    comment =
                      '<ul><li>' + x.comment.join('</li><li>') + '</li></ul>';
                  }
          