• 测试
    • 单一的测试每个概念

    测试

    一些好的覆盖工具。

    一些好的 JS 测试框架。

    单一的测试每个概念

    反例:

    1. const assert = require('assert');
    3. describe('MakeMomentJSGreatAgain', function() {
    4.   it('handles date boundaries', function() {
    5.     let date;
    7.     date = new MakeMomentJSGreatAgain('1/1/2015');
    8.     date.addDays(30);
    9.     date.shouldEqual('1/31/2015');
    11.     date = new MakeMomentJSGreatAgain('2/1/2016');
    12.     date.addDays(28);
    13.     assert.equal('02/29/2016', date);
    15.     date = new MakeMomentJSGreatAgain('2/1/2015');
    16.     date.addDays(28);
    17.     assert.equal('03/01/2015', date);
    18.   });
    19. });

    正例:

    1. const assert = require('assert');
    3. describe('MakeMomentJSGreatAgain', function() {
    4.   it('handles 30-day months', function() {
    5.     let date = new MakeMomentJSGreatAgain('1/1/2015');
    6.     date.addDays(30);
    7.     date.shouldEqual('1/31/2015');
    8.   });
    10.   it('handles leap year', function() {
    11.     let date = new MakeMomentJSGreatAgain('2/1/2016');
    12.     date.addDays(28);
    13.     assert.equal('02/29/2016', date);
    14.   });
    16.   it('handles non-leap year', function() {
    17.     let date = new MakeMomentJSGreatAgain('2/1/2015');
    18.     date.addDays(28);
    19.     assert.equal('03/01/2015', date);
    20.   });
    21. });