如何使用WebStorm配置Mocha

Question

我在运行Mocha测试时遇到问题。

我为WebStorm进行了配置，当我使用WebStorm测试运行Mocha时，我的测试正常运行。

但是，当我从我的终端使用'node'filename'运行测试时，出现“ describe is not defined”错误。

const assert = require('assert');

describe('login', function() {
    describe('find_user', function() {
        it('should find the user after login', function() {
            assert.equal([1,2,3].indexOf(4), -1);
            // should be code for login
        });
    });
});


describe('register', function() {
    describe('register_user', function() {
        it('should find the user after register', function() {
            assert.equal([1,2,3].indexOf(4), -1);
            // should be code for register
        });
    });
});

describe('contact', function() {
    describe('contact_us', function() {
        it('should find the contact message within the database', function() 
   {
            assert.equal([1,2,3].indexOf(4), -1);
            // should be code for contact us
        });
    });
});

将防雷代码修改为此版本后：我收到错误消息“描述不是函数”。

const assert = require('assert');
const mocha = require('mocha');
const  describe = mocha.describe;
const  it = mocha.it;

describe('login', function() {
    describe('find_user', function() {
        it('should find the user after login', function() {
            assert.equal([1,2,3].indexOf(4), -1);
            // should be code for login
        });
    });
});


describe('register', function() {
    describe('register_user', function() {
        it('should find the user after register', function() {
            assert.equal([1,2,3].indexOf(4), -1);
            // should be code for register
        });
    });
});

describe('contact', function() {
    describe('contact_us', function() {
        it('should find the contact message within the database', function() 
 {
            assert.equal([1,2,3].indexOf(4), -1);
            // should be code for contact us
        });
    });
});

package.json：

{
  "name": "couponsystem",
  "version": "1.0.0",
  "description": "electron desktop project",
  "main": "js/src/app.js",
  "scripts": {
    "start": "electron ."
  },
  "dependencies": {
    "bootstrap": "^4.2.1",
    "electron": "^4.0.0",
    "handlebars": "^4.0.12",
    "sequelize": "^4.42.0"
  },
  "devDependencies": {
    "mocha": "^5.2.0"
  },
  "author": "maks burkov",
  "license": "ISC"
}

您能解释一下从终端运行测试所需的配置吗？

Answer 1

您需要使用mocha测试运行程序来运行测试，只是将测试文件传递给节点解释器就不能了。

只需在package.json的"scripts": {}部分中添加"test": "mocha" ，然后在终端中运行npm test 。

参见https://mochajs.org/#getting-started