const expect = require('expect'); const removeNonASCII = require('./removeNonASCII.js'); test('removeNonASCII is a Function', () => { expect(removeNonASCII).toBeInstanceOf(Function); }); t.equal(removeNonASCII('äÄçÇéÉêlorem-ipsumöÖÐþúÚ'), 'lorem-ipsum', 'Removes non-ASCII characters');