const expect = require('expect'); const isArrayLike = require('./isArrayLike.js'); test('isArrayLike is a Function', () => { expect(isArrayLike).toBeInstanceOf(Function); }); t.equal(isArrayLike('abc'), true, 'Returns true for a string'); t.equal(isArrayLike([1,2,3]), true, 'Returns true for an array'); t.equal(isArrayLike(null), false, 'Returns false for null');