core-js/tests/unit-pure/esnext.symbol.custom-matcher.js

import Symbol from 'core-js-pure/full/symbol';

QUnit.test('Symbol.customMatcher', assert => {
  assert.true('customMatcher' in Symbol, 'Symbol.customMatcher available');
  assert.true(Object(Symbol.customMatcher) instanceof Symbol, 'Symbol.customMatcher is symbol');
});