const leapYears = require('./leapYears') describe('leapYears', () => { test('works with non century years', () => { expect(leapYears(1996)).toBe(true); }); test('works with non century years', () => { expect(leapYears(1997)).toBe(false); }); test('works with ridiculously futuristic non century years', () => { expect(leapYears(34992)).toBe(true); }); test('works with century years', () => { expect(leapYears(1900)).toBe(false); }); test('works with century years', () => { expect(leapYears(1600)).toBe(true); }); test('works with century years', () => { expect(leapYears(700)).toBe(false); }); });