mocha 学习

mocha

• install npm i mocha --save-dev

• demo

  var assert = require('assert');
  describe('Array', function () {
      describe('#indexOf()', function () {
          it('should return -1 when the value is not present', function () {
              assert.equal([1, 2, 3].indexOf(4), -1);
          });
      });
  });
  

• tips:

  • 需要创建test文件夹，而且放在和package.json同级目录下面的
  • 配置package.json的script的"test":"mocha"
  • 运行 npm test

• hooks

describe('hooks', function () {
  before(function () {
    // runs once before the first test in this block
  });

  after(function () {
    // runs once after the last test in this block
  });

  beforeEach(function () {
    // runs before each test in this block
  });

  afterEach(function () {
    // runs after each test in this block
  });

  // test cases
});

• reference link
  • https://mochajs.org/#installation