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使用Sinon存根测试Express路由

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我正在尝试对Express路由进行单元测试,以验证它们是否调用了正确的控制器功能 . 此时,我没有检查控制器功能的内部逻辑,只是路由映射到正确的功能 . 到目前为止,我所做的工作完全正常,直到我介绍路由器中间件如此:

'use strict';

import express from 'express';
import config from './../../config/environments';
import SuperLogin from 'superlogin';

let controller = require('./subjects.controller');
let router = express.Router();
let superlogin = new SuperLogin(config);

router.get('/', superlogin.requireAuth, superlogin.requireAnyRole(['admin', 'specialist', 'nurse']), controller.index);
router.get('/:subjectId', superlogin.requireAuth, superlogin.requireAnyRole(['admin', 'specialist', 'nurse']), controller.show);
router.post('/', superlogin.requireAuth, superlogin.requireAnyRole(['admin', 'specialist', 'nurse']), controller.create);
router.put('/:subjectId', superlogin.requireAuth, superlogin.requireAnyRole(['admin', 'specialist', 'nurse']), controller.upsert);
router.patch('/:subjectId', superlogin.requireAuth, superlogin.requireAnyRole(['admin', 'specialist', 'nurse']), controller.patch);
router.delete('/:subjectId', superlogin.requireAuth, superlogin.requireAnyRole(['admin']), controller.destroy);


module.exports = router;

如您所见,我正在使用Superlogin来验证对每条路线的访问权限 . 如果我删除了我的测试通过,添加中间件会导致它们失败 . 我可能需要存根superlogin方法,但我不知道在哪里这样做 .

我的测试如下

'use strict';

/* globals sinon, describe, expect, it */

let proxyquire = require('proxyquire').noPreserveCache();

let subjectCtrlStub = {
    index: 'subjectCtrl.index',
    show: 'subjectCtrl.show',
    create: 'subjectCtrl.create',
    upsert: 'subjectCtrl.upsert',
    patch: 'subjectCtrl.patch',
    destroy: 'subjectCtrl.destroy'
};

sinon.stub(superlogin, 'requireAuth', function(req, res, next) {
    return next();
});

let routerStub = {
    get: sinon.spy(),
    put: sinon.spy(),
    patch: sinon.spy(),
    post: sinon.spy(),
    delete: sinon.spy()
};

// require the index with our stubbed out modules
let subjectRoutes = proxyquire('./subjects.routes.js', {
    express: {
        Router() {
            return routerStub;
        }
    },
    './subjects.controller': subjectCtrlStub
});

describe('Subject API Router:', function() {

    it('should return an express router instance', function() {
        subjectRoutes.should.equal(routerStub);
    });

    describe('GET /api/subjects', function() {
        it('should route to subjects.controller.index', function() {
            routerStub.get
                .withArgs('/', 'subjectCtrl.index')
                .should.have.been.calledOnce;
        });
    });

    describe('GET /api/subjects/:subjectId', function() {
        it('should route to subjects.controller.show', function() {
            routerStub.get
                .withArgs('/:subjectId', 'subjectCtrl.show')
                .should.have.been.calledOnce;
        });
    });

    describe('POST /api/subjects', function() {
        it('should route to subjects.controller.create', function() {
            routerStub.post
                .withArgs('/', 'subjectCtrl.create')
                .should.have.been.calledOnce;
        });
    });

    describe('PUT /api/subjects/:subjectId', function() {
        it('should route to subjects.controller.upsert', function() {
            routerStub.put
                .withArgs('/:subjectId', 'subjectCtrl.upsert')
                .should.have.been.calledOnce;
        });
    });

    describe('PATCH /api/subjects/:subjectId', function() {
        it('should route to subjects.controller.patch', function() {
            routerStub.patch
                .withArgs('/:subjectId', 'subjectCtrl.patch')
                .should.have.been.calledOnce;
        });
    });

    describe('DELETE /api/subjects/:subjectId', function() {
        it('should route to subjects.controller.destroy', function() {
            routerStub.delete
                .withArgs('/:subjectId', 'subjectCtrl.destroy')
                .should.have.been.calledOnce;
        });
    });
});

我有一个在所有这些测试之前运行的before函数,它使一些具有不同角色的示例用户为数据库播种,并将授权令牌保存到全局变量,以便在测试 endpoints 时使用,我只是不知道如何发送它们routerStub函数调用 .

1 回答

  • 0

    使用stubs提供具有已知值的SUT的直接或非直接 inputs .

    您可能会考虑事实的证实,在某些情况下,路由可以从路由中获得什么 . 在这种情况下,使用存根为中间件提供影响其行为的输入数据(例如,用于身份验证的用户凭据) . 不要用存根替换中间件本身,因为如果存根完全改变了行为,那么这种测试就无关紧要了 .

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