import Prando from 'prando'; import { prop_reverse_with_two_lists } from './index'; describe('testing lists reversal', () => { test('reverse of two appended lists is append of each list reversed', () => { let reverse_append_result = prop_reverse_with_two_lists(new Prando(Math.random() * 1000), 0); expect(reverse_append_result).toBe(true); }); });