const expect = require('expect'); const {hashNode} = require('./_30s.js'); test('hashNode is a Function', () => { expect(hashNode).toBeInstanceOf(Function); }); test('Produces the appropriate hash', () => { hashNode(JSON.stringify({ a: 'a', b: [1, 2, 3, 4], foo: { c: 'bar' } })).then(v => expect(v).toBe('04aa106279f5977f59f9067fa9712afc4aedc6f5862a8defc34552d8c7206393') ); });