core-js/tests/unit-pure/es.string.italics.js

import italics from 'core-js-pure/es/string/italics';

QUnit.test('String#italics', assert => {
  assert.isFunction(italics);
  assert.same(italics('a'), '<i>a</i>', 'lower case');

  /* eslint-disable es/no-symbol -- safe */
  if (typeof Symbol == 'function') {
    assert.throws(() => italics(Symbol('italics test')), 'throws on symbol context');
  }
});